Registry data as of Aug 27, 2026

Robert Bristow, MD

Obstetrics & Gynecology Physician · Orange, CA

Robert Bristow, MD is an obstetrics & gynecology physician with a practice address in Orange, California, and NPI 1427016039, issued on May 3, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1427016039
Name
Robert Bristow
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
Practice location
101 The City Drive South, Orange, CA 92868
Phone
(410) 955-6700
Enumerated
May 3, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 101 The City Drive South

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nicholas Ambus, MDStudent in an Organized Health Care Education/Training Program1245084649
  2. Elham AmiriStudent in an Organized Health Care Education/Training Program1497160972
  3. Kellie Binder, NPPain Management Registered Nurse1114179611
  4. Madison CarterStudent in an Organized Health Care Education/Training Program1306692199
  5. Metha Chea, MDStudent in an Organized Health Care Education/Training Program1164363420
  6. Eliott ChungStudent in an Organized Health Care Education/Training Program1144015413

Verify Robert Bristow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

68% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

61 Medicare Part D claims for 28 beneficiaries, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.

  1. Robert Bristow61
  2. Specialty average188

Most prescribed

  1. Lynparza12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

One hospital or facility affiliation

  1. Regents OF The University OF CaliforniaOrange, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Obstetrics & Gynecology Physician providers in California

There are 5,004 obstetrics & gynecology physician records in California.

Other obstetrics & gynecology physician records in California

  1. Ingrid Aalami, MDSan Jose, CA1952376550
  2. Avisa Abaian- Eagar, M.D.Orange, CA1316057755
  3. Derek Abbassi, MDWalnut Creek, CA1841364155
  4. Nicole Abell, DOVentura, CA1811243603
  5. Zachary AbelsonLos Angeles, CA1689237414
  6. Sina Abhari, MDNewport Beach, CA1073955290
  7. Ray Abinader, M.D.Loma Linda, CA1770901548
  8. Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
  9. Nada Abou-HaibaLos Angeles, CA1134067549
  10. Ariel Abrahams, MDDowney, CA1376726174

Common questions

What is Robert Bristow, MD's NPI number?

Robert Bristow, MD's National Provider Identifier (NPI) is 1427016039, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Bristow, MD located?

The NPPES record lists a practice address at 101 The City Drive South, Orange, CA, 92868. Phone: (410) 955-6700. Providers update this record themselves, so call before visiting.

How can I verify Robert Bristow, MD's license?

Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Robert Bristow, MD prescribe under Medicare Part D?

In 2024, Robert Bristow, MD had 61 Medicare Part D claims for 28 beneficiaries; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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 Aug 27, 2026.