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Physician specialty

OB-GYN (Obstetrics & Gynecology)

Find: OB-GYN (Obstetrics & Gynecology) →

At a glance

Practicing in the U.S.
50,407
Per 100,000 residents
14.9
Women
64%
Median years since graduating
21

Training path

  1. College (bachelor’s degree) 4 years
  2. Medical school (MD or DO) 4 years
  3. Obstetrics and gynecology residency 4 years

Training after medical school: 4 years. From the start of college: about 12 years.

Usual minimum program lengths from ACGME program requirements. Some doctors take extra research years or a second fellowship.

Who they are

  • MD (DOs make up the rest) 89%
  • Women 64%
  • Graduated 35 or more years ago 18%
  • Offer telehealth 10%
  • Accept Medicare’s approved amount 94%

Sex and credentials from NPPES. Graduation year, telehealth and Medicare assignment from Medicare Care Compare, which covers clinicians enrolled in Medicare.

Where they practice

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What they do most for Medicare patients

  • Established patient office or other outpatient visit, 20-29 minutes 591,692
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination 534,034
  • Established patient office or other outpatient visit, 30-39 minutes 359,879
  • Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory 245,827
  • Screening mammography 105,113
  • Screening 3d breast mammography 101,345
  • Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 92,434
  • Urinalysis, manual test 89,107
  • Established patient office or other outpatient visit, 10-19 minutes 59,967
  • New patient office or other outpatient visit, 45-59 minutes 56,600
  • New patient office or other outpatient visit, 30-44 minutes 56,370
  • Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous 51,490

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Services billed to traditional Medicare in 2023 (Physician and Other Practitioners data); drugs given in the office are left out.

What they prescribe most

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Share of this specialty’s Medicare Part D prescriptions in 2024, including refills. Select a drug to see which of these clinicians prescribe it most, and where.

Hospitals where the most work

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Clinicians who list the hospital in Medicare Care Compare. The number opens the list of who works there.

Schools they graduated from most

  • Wayne State University School of Medicine 359
  • Indiana University School of Medicine 311
  • Philadelphia College of Osteopathic Medicine 269
  • Louisiana State University School of Medicine in New Orleans 268
  • Ohio State University College of Medicine 257
  • Medical College of Georgia School of Medicine 254
  • New York Medical College 252
  • Creighton University School of Medicine 250
  • University of Texas Southwestern Medical School at Dallas 241
  • University of Minnesota Medical School 239

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From Medicare Care Compare (Medicare-enrolled clinicians only).

Industry payments

Drug and device makers reported $25.5M in general payments to 23,170 clinicians in OB-GYN (Obstetrics & Gynecology) in 2025. See who received the most

Source: CMS Open Payments, program year 2025. A payment is not evidence of wrongdoing.

Research in this field

U.S. researchers published 9,354 articles and reviews in obstetrics and gynecology in 2024–2026.

Journals with the most U.S. papers

  • American Journal of Obstetrics and Gynecology Elsevier BV 669
  • Gynecologic Oncology Elsevier BV 590
  • International Journal of Gynecological Cancer BMJ 381
  • Journal of Minimally Invasive Gynecology Elsevier BV 336
  • American Journal of Perinatology Thieme Medical Publishers (Germany) 214
  • Obstetrics and Gynecology Lippincott Williams & Wilkins 204
  • American Journal of Obstetrics & Gynecology MFM Elsevier BV 196
  • Cureus Cureus, Inc. 168
  • Placenta Elsevier BV 163
  • BMC Pregnancy and Childbirth BioMed Central 114

Most-cited recent papers

  1. Epidemiology and management of gestational diabetes (opens in a new tab) The Lancet, 2024 · cited 493 times · free to read
  2. Pembrolizumab or placebo with chemoradiotherapy followed by pembrolizumab or placebo for newly diagnosed, high-risk, locally advanced cervical cancer (ENGOT-cx11/GOG-3047/KEYNOTE-A18): a randomised, double-blind, phase 3 clinical trial (opens in a new tab) The Lancet, 2024 · cited 433 times
  3. ESGO–ESTRO–ESP guidelines for the management of patients with endometrial carcinoma: update 2025 (opens in a new tab) The Lancet Oncology, 2025 · cited 398 times · free to read
  4. Pembrolizumab or placebo with chemoradiotherapy followed by pembrolizumab or placebo for newly diagnosed, high-risk, locally advanced cervical cancer (ENGOT-cx11/GOG-3047/KEYNOTE-A18): overall survival results from a randomised, double-blind, placebo-controlled, phase 3 trial (opens in a new tab) The Lancet, 2024 · cited 235 times
  5. Pathophysiology from preconception, during pregnancy, and beyond (opens in a new tab) The Lancet, 2024 · cited 200 times · free to read
  6. Unveiling Gestational Diabetes: An Overview of Pathophysiology and Management (opens in a new tab) International Journal of Molecular Sciences, 2025 · cited 146 times · free to read
  7. Hypertension in Pregnancy and Postpartum: Current Standards and Opportunities to Improve Care (opens in a new tab) Circulation, 2025 · cited 146 times · free to read
  8. Overall survival in patients with endometrial cancer treated with dostarlimab plus carboplatin–paclitaxel in the randomized ENGOT-EN6/GOG-3031/RUBY trial (opens in a new tab) Annals of Oncology, 2024 · cited 146 times · free to read

From OpenAlex, an open index of research papers. Papers with at least one author at a U.S. institution, classified by subject; the subject covers the whole field, so related specialties share these lists. Citation counts change daily.

Sources: CMS NPPES (counts, sex, credentials), Medicare Care Compare (schools, graduation years, hospitals, telehealth), CMS Medicare Physician & Other Practitioners (2023) and Part D Prescribers (2024), CMS Open Payments (2025), ACGME program requirements (training length), OpenAlex (research), U.S. Census Bureau ACS 2020–2024 (population).