Obesity Medicine Fellowship

What Is an Obesity Medicine Fellowship?

An obesity medicine fellowship is a post-residency training program—typically one year—designed to develop clinical expertise in the diagnosis, treatment, and longitudinal management of obesity as a chronic disease. Programs train physicians to apply behavioral, pharmacologic, and surgical co-management strategies at a level beyond what most residency curricula provide.

The critical framing distinction: this is an advanced fellowship, not an ACGME-accredited residency program. It sits in the same structural category as other non-ACGME advanced training experiences—valuable, credentialing-adjacent, but not regulated by the same federal GME framework that governs your residency. That distinction has downstream consequences for funding, portability, and how programs are obligated to treat you, all of which this page addresses directly.

Obesity medicine has grown substantially as a field. The American Board of Obesity Medicine (ABOM) has credentialed a large and expanding cohort of diplomates across base specialties. Fellowship is one route into that credential—but not the only one. Understanding where fellowship fits in the broader map is the first decision you need to make.

Accreditation Status

Obesity medicine fellowships are not ACGME-accredited. This is the single most important structural fact about this training pathway and should anchor every decision you make about program selection, funding negotiation, and credential value.

Two primary bodies accredit obesity medicine fellowship programs in the United States:

• Obesity Medicine Association (OMA) Fellowship Accreditation: OMA operates an accreditation process for fellowship programs that meet defined standards for curriculum, clinical volume, faculty qualifications, and program infrastructure. OMA-accredited status is the most widely recognized marker of program quality in this space. Programs seeking or holding OMA accreditation have submitted to external review; programs that have not should be asked directly why.
• American College of Osteopathic Family Physicians (ACOFP) Recognition: ACOFP recognizes certain obesity medicine fellowship programs relevant to DO-trained physicians. If you hold a DO degree and are considering how fellowship integrates with your professional society affiliations, ACOFP recognition is worth investigating alongside OMA accreditation.

Neither OMA nor ACOFP accreditation is equivalent to ACGME or AOAM accreditation. The practical consequences include: no guaranteed GME pass-through funding, no standardized duty hour protections, no ACGME oversight of grievance processes, and variable stipend structures. These are not reasons to avoid fellowship; they are reasons to read your program agreement carefully before signing.

Board certification is a separate track. The American Board of Obesity Medicine (ABOM) issues the primary board credential in this field. ABOM certification does not require fellowship completion—it requires passing the ABOM examination and meeting eligibility criteria independently. Fellowship and board certification are related but not synonymous pathways. See the ABOM Certification section below.

Who Should Apply?

Obesity medicine fellowship is formally open to physicians who have completed, or are completing, residency training in a qualifying base specialty. Historically qualifying base specialties include internal medicine, family medicine, pediatrics, obstetrics and gynecology, psychiatry, and general surgery, among others. Some programs accept applicants from additional specialties; confirm eligibility with each program directly, as criteria are not yet uniformly standardized.

The more useful question is not whether you can apply, but whether fellowship is the right route for your specific goals. The decision matrix looks roughly like this:

• Fellowship is likely worth the year if: you want to build a clinical identity in obesity medicine, pursue academic work in the field, join or build a structured obesity medicine program within a health system, work closely with bariatric surgery teams, or develop a research portfolio in metabolic disease.
• The exam-only ABOM route may be sufficient if: you intend to integrate obesity care into an existing primary care or specialty practice, you have strong self-directed learning capacity, and your institutional environment does not require fellowship-level credentialing for the role you want.
• Fellowship is probably not necessary if: your goal is primarily to add anti-obesity medication prescribing to a primary care practice. ABOM certification via the practice pathway, combined with targeted CME, accomplishes that without a year of fellowship-level commitment.

For physicians coming from surgical subspecialties, endocrinology, or other fields where obesity intersects heavily with your primary specialty, the fellowship offers structured exposure to the behavioral and pharmacologic domains that surgical training typically underemphasizes—and vice versa for primary care physicians seeking more surgical co-management experience.

Old grads, career-changers, and physicians returning from gaps will find that obesity medicine fellowship has a notably different culture than competitive ACGME subspecialties. Programs in this space are generally evaluating professional readiness and genuine clinical interest, not USMLE Step 1 scores or Alpha Omega Alpha status.

Curriculum and Training Structure

Accredited programs share a common core architecture, though implementation varies considerably. A well-structured one-year obesity medicine fellowship typically includes the following components:

Clinical Rotations

• Comprehensive obesity medicine clinic: Core longitudinal experience. Fellows carry a panel of patients through the full treatment arc—assessment, goal-setting, pharmacotherapy initiation and titration, and long-term follow-up. Volume and case complexity here are the single strongest predictor of clinical readiness at graduation.
• Behavioral and psychological medicine: Structured exposure to motivational interviewing, cognitive behavioral approaches to eating behavior, and management of comorbid mood and eating disorders. Often delivered in partnership with psychology or psychiatry colleagues.
• Bariatric surgery co-management: Pre- and post-operative medical management of patients undergoing metabolic and bariatric surgery. The depth of this rotation varies significantly by program—programs embedded within high-volume bariatric programs offer substantially more here.
• Endocrinology and metabolic medicine: Management of obesity-associated metabolic disease including type 2 diabetes, metabolic-associated steatotic liver disease (MASLD), polycystic ovary syndrome, and hypothalamic obesity.
• Pediatric obesity (selected programs): Not universal; programs affiliated with children's hospitals or academic pediatric departments are more likely to offer this.

Didactics and Curriculum

OMA-accredited programs are expected to address the core content domains covered by the ABOM examination, including pathophysiology of obesity, nutritional biochemistry, physical activity medicine, pharmacotherapy, surgical options, and health disparities in obesity care. The rigor and structure of didactic programming is highly variable; ask programs specifically how their curriculum maps to ABOM content domains.

Scholarly Project

Most accredited programs require a scholarly project—typically a case series, quality improvement initiative, or original research project. The depth of expectation varies considerably. Programs with active research faculty and protected time for fellows produce publishable work; programs with nominal scholarly requirements may not. If research productivity matters to your career goals, assess this explicitly.

ABOM Board Certification Pathway

The American Board of Obesity Medicine (ABOM) is the primary certifying body for physicians in this field. ABOM certification is increasingly expected for leadership roles in academic obesity medicine programs and structured health system obesity clinics. Understanding how fellowship intersects with ABOM eligibility requires distinguishing the two available eligibility pathways.

The Practice Pathway

Physicians who have been in clinical practice for a qualifying period and who can document a defined proportion of their practice devoted to obesity care may be eligible to sit for the ABOM examination without fellowship training. The specific requirements for the practice pathway—minimum years in practice, documentation of clinical activity—are maintained by ABOM directly and subject to change. Verify current eligibility criteria at abom.org for your application year.

The Fellowship Pathway

Completion of an accredited obesity medicine fellowship may provide an alternative or expedited route to ABOM examination eligibility for physicians earlier in their careers who would not yet qualify under the practice pathway. This is a meaningful practical advantage for physicians who want to pursue board certification in the year immediately following residency, before accumulating the practice history required by the practice pathway.

ABOM certification requires passing a proctored examination regardless of which eligibility pathway you use. Fellowship completion does not confer certification; it confers examination eligibility. The examination itself covers a broad content domain, and fellows at well-structured programs who engage seriously with the curriculum are generally prepared to sit and pass the examination at the end of their fellowship year.

ABOM is not an ABMS (American Board of Medical Specialties) member board. This distinction matters for hospital credentialing in some health systems—some hospitals recognize ABOM certification for privileges, others do not yet have a formal credentialing mechanism for it. This is an active area of evolution in the field.

Program List and Filters

The table below lists obesity medicine fellowship programs with OMA accreditation, ACOFP recognition, or formal institutional affiliation. Data is updated on a best-effort basis; verify current accreditation status, application status, and contact information directly with each program before applying. Programs marked as accreditation-pending are in the OMA review process but have not yet received formal accreditation designation.

[Interactive filterable program table — filter by accreditation body, state, base specialty accepted, stipend availability, and research focus — renders here. If the table is not loading, see the OMA program directory at obesitymedicine.org and the ABOM-recognized program list at abom.org for current listings.]

When reviewing any program not listed by OMA or ACOFP, ask the program directly: what is their accreditation status, what is their application timeline, what is their stipend structure, and what are their ABOM pass rates for recent graduates. Programs that cannot or will not answer these questions clearly deserve additional scrutiny.

Application Timeline

Obesity medicine fellowship programs do not use ERAS and do not participate in the NRMP Match. This is a direct-application, largely rolling-admissions landscape. The structural implications are significant:

• There is no single application deadline. Programs open applications at different times and fill positions on a rolling basis. Waiting until a traditional residency application window opens is a strategic error—some programs fill their single fellowship position within weeks of opening applications.
• You can apply to multiple programs simultaneously without a centralized portal or fee structure. Direct outreach to program coordinators is appropriate and expected.
• Interviews are typically informal by residency standards—often a single conversation with the program director and one or two clinical faculty—and may be conducted by video. The process reflects the smaller scale of these programs.

General Cycle Guidance

The following represents a typical pattern for programs starting in July of a given year. Because programs vary, verify timing directly with each program you are considering. See the current season timeline on the PGY Zero data pages for context on how this cycle relates to your residency graduation date.

• 12–18 months before intended start: Identify target programs, confirm accreditation status, confirm eligibility of your base specialty, and make initial email contact with program directors or coordinators to ask whether applications are being accepted.
• 9–12 months before intended start: Prepare application materials (see requirements below). Identify and brief letter of recommendation writers. If you are a current PGY-2 or PGY-3, confirm that your program director supports the timeline and understands the non-ERAS nature of your application.
• 6–9 months before intended start: Submit applications to programs actively accepting. Do not wait for a uniform deadline that does not exist. Follow up proactively but professionally.
• 3–6 months before intended start: Interviews, program evaluation, offers, and acceptance. Unlike the Match, you can receive and accept an offer at any time. Once you accept, communicate promptly with other programs where you have pending applications.
• 1–3 months before intended start: Finalize credentialing, licensing, and program agreement review. This is the point at which stipend, benefits, and terms should be confirmed in writing.

Application Requirements

Requirements are not standardized across programs, but the following components are common across OMA-accredited and well-structured programs:

• Curriculum vitae: Standard academic CV. Include clinical experience, research, publications, presentations, teaching, and any obesity-relevant training or clinical exposure.
• Personal statement: Typically one to two pages. Programs are evaluating genuine clinical interest and career direction, not prose style. Be specific about why obesity medicine, why fellowship rather than the practice pathway, and what you intend to do with the training.
• Medical school transcripts: Requested by most programs. Unofficial copies are often sufficient for initial review.
• USMLE or COMLEX scores: Requested by most programs. Score thresholds, if any, are program-specific and generally less determinative here than in competitive ACGME subspecialties.
• Letters of recommendation: Typically two to three. At least one should come from a physician who can speak to your clinical skills and patient interaction. A letter from someone with obesity medicine or metabolic disease expertise is valuable but not universally required.
• Proof of residency completion or current enrollment: Most programs require completion of an accredited residency before the fellowship start date. Some accept applicants who are currently PGY-2 or above for programs starting after their anticipated graduation.
• Medical license: You will need an active license in the state where the program operates before you begin training. Plan the timeline accordingly—state licensing timelines vary substantially.
• DEA registration: Required for programs where fellows have prescribing authority, which is most clinical fellowship programs.

IMG applicants should confirm that their visa status is compatible with the fellowship's employment or training structure. Because these are non-ACGME programs, the visa pathway is not always identical to J-1 or H-1B routes used for residency. Verify current requirements directly with ECFMG/Intealth and official sources for your application year.

Stipend and Funding Landscape

This section requires direct honesty: the funding landscape for obesity medicine fellowships is uneven and in some programs inadequate.

Because obesity medicine fellowships are not ACGME-accredited, they do not qualify for federal GME pass-through funding via the Centers for Medicare and Medicaid Services in the same way that accredited residency and fellowship positions do. Institutions bear the full cost of stipend and benefits from departmental, hospital, or grant budgets. The practical result is significant variation:

• Some programs, particularly those embedded in large academic medical centers with institutional commitment to the field, offer stipends and benefits comparable to ACGME subspecialty fellows at the same institution.
• Some programs offer partial stipends—covering salary but not benefits, or offering a nominal stipend well below cost of living in the program's location.
• A minority of programs are unfunded or offer only tuition-waiver structures that do not include living support. These arrangements are most common in programs where the fellow is expected to generate clinical revenue that offsets program costs—a model that warrants careful scrutiny of the program agreement.

Negotiate explicitly. Because there is no centralized match and no salary standardization, stipend and benefits are negotiable in a way that ACGME positions are not. Ask programs directly: What is the stipend? Does it include health insurance? Malpractice? Paid time off? Are there moonlighting restrictions? Get all terms in writing before accepting.

Regarding loan forgiveness: fellowship positions may or may not qualify for Public Service Loan Forgiveness (PSLF) depending on the employer of record and their 501(c)(3) status. This is not determined by fellowship accreditation status but by the employing institution. Verify your specific program's eligibility with your loan servicer and the Federal Student Aid office—do not rely on program coordinator assurances on this point.

Career Outcomes and Practice Settings

Obesity medicine fellowship graduates practice across a range of settings. The credential's value is greatest where structured expertise is expected or where clinical complexity justifies dedicated training:

• Academic obesity medicine programs: Medical school-affiliated clinics that see complex patients, train residents and students, and produce research. Fellowship is effectively required for faculty positions at this level.
• Integrated health system obesity programs: Large health systems have increasingly built dedicated obesity medicine service lines. These positions often require or strongly prefer ABOM certification and fellowship-level training.
• Bariatric surgery program integration: Serving as the medical obesity medicine specialist within a bariatric surgery program—managing pre-operative optimization, post-operative complications, and weight recurrence—is a natural role for fellowship-trained physicians.
• Obesity-focused primary care practices: A growing number of independent and employed practices have positioned around comprehensive obesity care, leveraging both pharmacotherapy and behavioral programming.
• Industry and pharmaceutical development: The anti-obesity medication pipeline is among the most active in medicine. Fellowship-trained physicians with clinical trial or research experience are recruited for medical affairs, clinical development, and advisory roles.
• Policy and public health: Obesity medicine expertise is increasingly sought in government agencies, payers, and population health organizations working on coverage policy for anti-obesity medications and bariatric surgery.

Career outcomes data specific to obesity medicine fellowship graduates is not yet systematically collected and published in the way that ACGME match outcome data is. When evaluating specific programs, ask directly for alumni outcomes: Where did the last three to five fellows go? Are they doing what you want to do?

Obesity Medicine vs. Related Fellowships

Several adjacent training pathways overlap with obesity medicine fellowship, and choosing incorrectly wastes a year. The distinctions are real:

Obesity Medicine vs. Bariatric Surgery Fellowship

Bariatric surgery fellowship is a surgical training pathway for general surgeons pursuing advanced laparoscopic and metabolic surgical skills. It is MBSAQIP-accredited and entirely distinct from obesity medicine fellowship. If you are a general surgery resident interested in surgical management of obesity, bariatric surgery fellowship is your pathway. If you are a non-surgeon interested in medical management of obesity—including pre- and post-operative co-management—obesity medicine fellowship is appropriate. These are not interchangeable.

Obesity Medicine vs. Endocrinology Fellowship

Endocrinology fellowship is a two-year ACGME-accredited subspecialty fellowship with broad metabolic disease training, including diabetes, thyroid, pituitary, and adrenal disorders alongside obesity. Endocrinology provides deeper training in endocrine pathophysiology and a stronger research infrastructure at most academic programs. Obesity medicine fellowship provides more concentrated focus on obesity-specific behavioral, pharmacologic, and surgical co-management skills. For physicians whose primary interest is obesity as a disease—rather than the full breadth of metabolic endocrinology—obesity medicine fellowship may be more efficient. For physicians interested in both domains, the combination of endocrinology fellowship plus ABOM certification is worth considering.

Obesity Medicine vs. Lifestyle Medicine

Lifestyle medicine is a board-certified subspecialty (American Board of Lifestyle Medicine, ABLM) focused on behavior change across six domains: nutrition, physical activity, sleep, stress, substance use, and social connection. Lifestyle medicine and obesity medicine overlap substantially in the behavioral and nutritional domains but differ in scope. Obesity medicine has more focused pharmacotherapy training; lifestyle medicine has broader health behavior application. Some physicians pursue both credentials. They are not duplicative.

How to Evaluate Programs

With a small number of accredited programs and limited publicly available outcome data, program evaluation requires direct investigation. Use this framework:

Clinical Volume and Case Complexity

How many patients does a fellow see longitudinally over the year? What is the range of BMI, comorbidity burden, and prior treatment history in the patient population? A program seeing primarily straightforward patients limits your preparation for complex care. Ask for a typical fellow schedule and a description of the patient population.

Surgical Exposure

If surgical co-management is important to your career goals, ask specifically: How many bariatric surgery cases does the affiliated program perform annually? What is the fellow's specific role in pre- and post-operative care? Does the fellow attend surgical cases? Programs without active bariatric surgery programs cannot provide this training regardless of how their curriculum describes it.

Accreditation Status

Is the program OMA-accredited, OMA-accreditation-pending, ACOFP-recognized, or unaccredited? This is a factual question with a factual answer. An unaccredited program is not automatically inferior, but the absence of external review means your assessment of program quality rests entirely on your own due diligence. Weight that accordingly.

Mentorship and Faculty

Who is the program director? Are they ABOM-certified? Are they clinically active or primarily administrative? How much time will you have with them directly? In a one-year program with a single fellow position, the program director relationship is your primary mentorship experience—assess this relationship seriously at interview.

Research Infrastructure

If research productivity matters to your goals: Does the program have active IRB-approved protocols? Has the program produced peer-reviewed publications in recent years? Is there protected time and statistical support for the scholarly project? A nominal scholarly project requirement without infrastructure is unlikely to produce meaningful research output.

ABOM Pass Rates

Programs should be able to tell you what proportion of their graduates have sat for and passed the ABOM examination. This is the most direct proxy for whether the curriculum actually prepares you for board certification.

Alumni Outcomes

Where are the last five graduates? Contact them if possible—directly, not through the program. Alumni who are doing what you want to do are the strongest endorsement a program can provide.

Frequently Asked Questions

Can I apply to obesity medicine fellowship while still in residency?

Yes. Most programs accept applications from physicians in the final one to two years of residency for positions starting after graduation. Because applications are direct and rolling, you can initiate contact and submit materials while a PGY-2 or PGY-3. Confirm that the program's start date aligns with your graduation and that your residency program director is aware—some residency programs have policies on outside commitments during training.

Do I need fellowship to sit for the ABOM examination?

No. ABOM offers a practice pathway for eligible physicians who can document qualifying clinical activity in obesity medicine. Fellowship is not a prerequisite for board certification; it is one route to examination eligibility, particularly useful for physicians who want to pursue ABOM certification immediately after residency before accumulating the practice history required by the practice pathway. Verify current eligibility criteria at abom.org for your application year.

Will obesity medicine fellowship count toward Public Service Loan Forgiveness?

Potentially, but it depends on the employing institution's 501(c)(3) status and your qualifying repayment plan—not on fellowship accreditation status. Do not assume eligibility. Verify with the Federal Student Aid office and your loan servicer using your specific program's employer of record before making financial decisions based on PSLF eligibility.

Is this worth it if I just want to add obesity care to my primary care practice?

Probably not, for most physicians in that situation. The ABOM practice pathway combined with targeted CME through OMA or similar organizations accomplishes ABOM certification without the time and opportunity cost of a fellowship year. Fellowship generates the most value when you are building a clinical identity, pursuing academic work, joining a structured program that requires it, or needing the early ABOM eligibility that fellowship provides before practice pathway criteria are met.

Are there part-time or online obesity medicine fellowship options?

Some programs have experimented with hybrid or longitudinal models, particularly since 2020. These are not yet common and are less likely to hold full OMA accreditation. If a program is marketed primarily as online or remote, verify accreditation status and ask explicitly how clinical training requirements are met. Remote didactics are reasonable; remote clinical training in a procedurally and behaviorally complex field is not.

I am an IMG. Can I apply to obesity medicine fellowship?

IMGs are eligible to apply to obesity medicine fellowship programs. Because these are non-ACGME programs, visa sponsorship pathways differ from residency and may not involve J-1 exchange visitor status through ECFMG. Contact programs directly about their capacity to sponsor non-citizen physicians and confirm the visa mechanism they use. Verify current requirements directly with ECFMG/Intealth and official sources for your application year.

How competitive is admission?

The number of accredited programs remains small relative to the field's growth, and individual programs typically train one to three fellows per year. Demand for positions has increased alongside the rising clinical and commercial relevance of anti-obesity medications. That said, this is not a competitiveness landscape driven by Step scores or class rank. Programs are primarily assessing clinical readiness, genuine interest in the field, and professional judgment. Physicians with strong base specialty training and a clear account of why obesity medicine aligns with their career direction are competitive applicants.