Obstetrics & Gynecology Physician

Compiled from official public sources by the editorial process.

NUCC 207V00000X · Obstetrics & Gynecology

44,326 CMS NPPES-registered providers across 56 states · 42nd of 690 specialties by headcount.

44,326

Providers

CMS NPPES-registered

States

with ≥1 NPI

California

Top state

4,943 providers

$1K

Open Pay avg

249th of 552 specialties

Where this specialty sits in the corpus

Obstetrics & Gynecology Physician ranks 42nd of 690 NUCC specialties by CMS NPPES headcount (0.63% of all registered NPIs), densest in California; per resident District of Columbia leads.

44,326
NPPES providers in specialty: 42nd
of 690 specialties: 423
state-share HHI: 62.4%
Part D prescriber share

District of Columbia is densest per capita (2.6× the national rate; American Samoa 2.3×); 80.2% of the Obstetrics & Gynecology category.

Taxonomy fingerprint

Obstetrics & Gynecology Physician (NUCC 207V00000X; 62.4% Part D prescribers (27,659 of 44,326); avg 179 Part D claims/prescriber (429th of 567); Open Payments avg $1K/physician (249th of 552; 20,659 paid, $24.0M total); state-share HHI 423; next-larger headcount neighbor Community Health Worker (+2,141); next-smaller Occupational Therapy Assistant (-3,292)).

Next larger: Community Health Worker (46,467) Next smaller: Occupational Therapy Assistant (41,034)

Population-adjusted state index

Each multiple is this specialty's providers-per-resident in a state divided by the national rate (Census Vintage population estimates). Raw headcount favors large states; this ranking surfaces denser markets.

Over-indexed vs national rate

District of Columbia 2.6× · 34/100k
American Samoa 2.3× · 29.6/100k
Hawaii 1.5× · 20/100k
Virgin Islands 1.5× · 19.5/100k
Connecticut 1.4× · 18.6/100k

Under-indexed vs national rate

Guam 0.50× · 6.5/100k
Arkansas 0.65× · 8.6/100k
Idaho 0.69× · 9.1/100k

Which states have the most providers?

#	State	Providers	% of specialty
1	California	4,943	11.2%
2	Texas	3,412	7.7%
3	New York	3,066	6.9%
4	Florida	2,515	5.7%
5	Pennsylvania	1,953	4.4%
6	Illinois	1,925	4.3%
7	Michigan	1,681	3.8%
8	Ohio	1,501	3.4%
9	North Carolina	1,464	3.3%
10	Georgia	1,359	3.1%
11	New Jersey	1,312	3.0%
12	Virginia	1,139	2.6%
13	Massachusetts	1,115	2.5%
14	Maryland	1,006	2.3%
15	Washington	1,006	2.3%

Top Cities for Obstetrics & Gynecology Physician

#	City	Providers
1	New YorkNew York	655
2	ChicagoIllinois	634
3	HoustonTexas	618
4	PhiladelphiaPennsylvania	357
5	Los AngelesCalifornia	346
6	BrooklynNew York	328
7	BostonMassachusetts	317
8	Saint LouisMissouri	316
9	DallasTexas	312
10	BaltimoreMaryland	288
11	San AntonioTexas	274
12	San DiegoCalifornia	271

Sample Obstetrics & Gynecology Physician NPIs

A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.

#	Provider	State
1	Jennifer Cooper, MDWestminster, CO	Colorado
2	Kathleen Brown, MDTampa, FL	Florida
3	Karen Bohmke, MDSeattle, WA	Washington
4	Deborah Edgeworth, M.D.Panama City Beach, FL	Florida
5	Philip Caron, DOHenderson, KY	Kentucky
6	Barrie Anderson, MDIowa City, IA	Iowa
7	Michael Horn, M.D.Willingboro, NJ	New Jersey
8	Robert Ellis, M.D.Powell, WY	Wyoming
9	Sherry Guiler, RNC ARNP WHNPNicholasville, KY	Kentucky
10	Thu Tran, MDRockville, MD	Maryland
11	Ziba Guy, M.D.Westbury, NY	New York
12	Katherine Diase, MDSugar Land, TX	Texas
13	Gary Walker, M.D.Snellville, GA	Georgia
14	Michael Resnick, MDTrenton, NJ	New Jersey
15	Owen McCarron, MDCedar Rapids, IA	Iowa
16	Candace Lew, MDTempe, AZ	Arizona
17	Karenmarie Meyer, M.D.Hinsdale, IL	Illinois
18	Joy Leblanc, M.D.Webster, TX	Texas

Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Obstetrics & Gynecology category.

Gynecology Physician

3,906 providers

Maternal & Fetal Medicine Physician

2,112 providers

Reproductive Endocrinology Physician

1,421 providers

Obstetrics Physician

1,396 providers

Gynecologic Oncology Physician

1,364 providers

Compare Obstetrics & Gynecology Physician vs Gynecology Physician →

Explore

All Specialties → Compare Specialties → Rankings →

Frequently Asked Questions

How many Obstetrics & Gynecology Physician providers are in the US?

There are 44,326 Obstetrics & Gynecology Physician providers registered in the CMS NPPES database across 56 US states and territories. California has the most with 4,943 providers. Leading metros include New York, NY; Chicago, IL; Houston, TX; Philadelphia, PA. Among 690 NUCC specialties, this code ranks 42nd by headcount.

Do Obstetrics & Gynecology Physician clinicians appear in Open Payments?

CMS Open Payments 2024 lists 20,659 Obstetrics & Gynecology Physician physicians receiving industry payments totaling $24.0M (188,140 payments; average $1K per paid physician, 249th of 552 specialties by average). Presence in Open Payments is not a quality judgment.

How much Part D prescribing does this specialty do?

Among Obstetrics & Gynecology Physician NPIs, 27,659 appear in the Medicare Part D Prescriber PUF (average 179 claims and $24K drug cost per prescriber; 429th of 567 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.

Data sources and methodology

Provider data from CMS NPPES (download.cms.gov/nppes). Specialty classification from NUCC Health Care Provider Taxonomy (nucc.org). Part D averages from the CMS Medicare Part D Prescriber PUF; industry payments from CMS Open Payments 2024. Counts reflect self-designated primary taxonomy at NPI enrollment. PlainDoctor does not rate or rank providers. Methodology · About

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.