NPPES file of Aug 9, 2026

Obstetrics & Gynecology Physician in Colorado

906 NPPES records list obstetrics & gynecology physician with a practice address in Colorado, 15 per 100,000 residents, the 14th highest rate of 51. Denver and Aurora have the most; each record links to the provider's NPI and the Colorado license search. Page 19 of 19.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207V00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Denver has the most, 192

  1. Denver192
  2. Aurora95
  3. Colorado Springs73
  4. Littleton41
  5. Lone Tree30

Obstetrics & Gynecology Physician records in Colorado

  1. Kathryn Zamboni-CutterFort Carson, CO 809131205897501
  2. Gerald Zarlengo, M.D.Denver, CO 802201366481525
  3. Melissa Zart, M.D.Castle Rock, CO 801091235142415
  4. Calvin Zen, M. D.Lakewood, CO 802281174851174
  5. Jacqueline Ziernicki, M.D.Lone Tree, CO 801241891905527
  6. Anissa Zimmerman, MDDenver, CO 802181588313399

Source: CMS NPPES, primary taxonomy 207V00000X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 14 of 51 per resident

  1. Massachusetts16
  2. Vermont16
  3. Oregon15
  4. Colorado15
  5. Minnesota15
  6. Pennsylvania15
  7. 50 states and D.C.14

Source: CMS NPPES, primary taxonomy 207V00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

69.0% of these records appear in a Medicare file, against 75.6% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Colorado69.0%
  2. United States75.6%

Obstetrics & Gynecology Physician records in Colorado, measured

  • In a Medicare file625 of 906 · 69.0% here, 75.6% nationally
  • In the CMS Doctors and Clinicians file504 · 55.6% here, 60.3% nationally
  • Not updated in five years or more543 · 59.9% here, 56.2% nationally
  • Median graduation year2008 · the 504 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207V00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

906 NPPES records list obstetrics & gynecology physician (207V00000X) as their primary taxonomy with a practice address in Colorado: 15 per 100,000 residents against 14 nationally (50 states and D.C.). Denver has 192 of them (21%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Missouri902
  2. Indiana894
  3. Minnesota878
  4. Tennessee815

States with a similar rate per 100,000

  1. Oregon15.4
  2. Pennsylvania15.2
  3. Vermont16.1
  4. Massachusetts16.1

The largest states

  1. California5,088
  2. Texas3,524
  3. New York3,174
  4. Florida2,601
  5. Illinois2,062

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.