It is in the interest of certain lab sales teams and pharma reps to know how many gynecologists are there in the U.S.
We will be talking about gynecologists-obstetricians (OB/GYN) practitioners in the United States.
Obstetricians and gynecologists (OB/GYNs) are primary care specialists for women throughout their reproductive years. They take care of patients that need services ranging from prenatal care, childbirth, gynecologic examination, and surgery. They also provide preventive medical care.
But it is nice to know, how many OB/GYNs are actively practicing in the U.S. — and how many patients are they serving through Medicare?
According to Voyager, there are 53,163 actively practicing OB/GYNs in the United States as of 2025. In 2023, however, they provided outpatient services to just 2,879,711 Medicare Part B beneficiaries.
That low Medicare number may seem surprising — until you consider who OB/GYNs typically serve.
How Many OB/GYNs Are Practicing in the U.S.?
Voyager identifies 53,163 actively practicing OB/GYNs across private practices, academic centers, community clinics, and hospital systems.
This provider data comes from the National Plan and Provider Enumeration System (NPPES) and CMS registries, which are updated weekly. Voyager confirms active clinical status by analyzing claims data and referral flows — ensuring only currently practicing OB/GYNs are counted.
The field includes:
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General OB/GYNs
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Maternal-fetal medicine
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Reproductive endocrinology and infertility
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Female pelvic medicine and reconstructive surgery
Medicare Volume: Only 2.88 Million Patients Served in 2023
In 2023, OB/GYNs provided outpatient services to 2,879,711 Medicare Part B beneficiaries, according to Voyager’s claims-based analysis.
This number is much lower compared to other specialties but that’s expected. Note that the vast majority of OB/GYN care is delivered to women between ages 15 and 50, while Medicare covers individuals 65+ (and some younger people with disabilities).
That doesn’t mean OB/GYNs aren’t caring for older patients. They still play a role in managing certain conditions such as:
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Hormone therapy for menopause and postmenopause
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Gynecologic cancer checkups
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Osteoporosis management
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Care for pelvic floor disorders and incontinence
However, these services are a smaller portion of their overall care volume, which explains the relatively low Medicare activity.
The Scope of OB/GYN Practice
It is important to know that OB/GYNs are can provide preventive care and actual medical intervention, so it makes sense for sales teams to target these providers.
For instance, these practitioners will order or do the following in their day-to-day work:
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Preventive women’s health (Pap smears, STI screening, contraception)
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Pregnancy, labor, and delivery
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Gynecologic surgery (e.g., hysterectomy, laparoscopy)
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Reproductive endocrinology and infertility
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Chronic pelvic pain and menstrual disorders
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Postmenopausal care
Find Practicing OB/GYNs and Start Having Revenue
Of the 53,163 active OB/GYNs in the U.S.:
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Many work in large group practices or multispecialty women’s health centers
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Others are affiliated with hospital-based labor & delivery units
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Some specialize in high-complexity areas like maternal-fetal medicine, gynecologic oncology, or minimally invasive surgery
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REIs and urogynecologists often work closely with endocrinologists, urologists, or fertility labs
Lab and pharmaceutical sales teams can now effectively target and find actively practicing Obstetrician-Gynecologists in a particular area with Voyager.
Create and organize sales territories, and formulate packages that will meet the unique needs of Ob/Gyns in that area.
Voyager enables segmentation by subspecialty, patient volume, and affiliation — allowing vendors and research teams to identify high-volume OB/GYNs or specialized referral networks.
FAQs: How Many OB/GYNs Are in the U.S.?
Q: How many OB/GYNs are actively practicing in the U.S. in 2025?
A: Voyager identifies 53,163 active OB/GYNs, confirmed through weekly registry updates and claims activity.
Q: Why is the Medicare volume so low compared to other specialties?
A: OB/GYNs primarily serve women of reproductive age, while Medicare mostly covers individuals 65 and older.
Q: How many Medicare patients did OB/GYNs serve in 2023?
A: In 2023, OB/GYNs provided outpatient services to 2,879,711 Medicare Part B beneficiaries.
Q: Do OB/GYNs treat older women?
A: Yes — particularly for menopausal care, incontinence, and cancer follow-up — but this is a smaller portion of their overall practice.
Q: Where does Voyager get its provider data?
A: From NPPES and CMS registries (updated weekly), paired with outpatient claims and referral analytics to confirm provider activity.
