Patricia A. Robertson, M.D.
Obstetrics & Gynecology Physician · San Francisco, CA
Patricia A. Robertson, M.D. is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1053352302, issued on Jun 9, 2006. Check the license (California G36091, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Patricia A. Robertson
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G36091 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 353-2566
- Enumerated
- Jun 9, 2006
- Record last updated
- Jul 22, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (415) 353-2958
- Medicaid ID
- 00G360910 CA
- Medicare enrollment
- Enrolled (PECOS I20080214000248); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1976
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 400 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daniel Adelman, M.D.Internal Medicine Physician1922041821
- Joshua Adler, MDInternal Medicine Physician1194781351
- Justin Ahn, M.D.Urology Physician1063755148
- Weiyun Ai, MDMedical Oncology Physician1649346842
Verify Patricia A. Robertson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G36091Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
27 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Patricia A. Robertson among 5,088 obstetrics & gynecology physician records in California
Patricia A. Robertson, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1976 · median 2004 among the 2,700 with a school on file
- Record last updated2008 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Francisco → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Sonia Badheka, D.O.San Francisco, CA 941431013207547
- Elizabeth Blumenthal, MDSan Francisco, CA 941431164759916
- Jocelyn ChapmanSan Francisco, CA 941431770810590
- Alissa Erogbogbo, MDSan Francisco, CA 941431629234554
- Erica Johnstone, M.D.San Francisco, CA 941431487773263
- Karen McCune, MDSan Francisco, CA 941431326197633
- Jennifer McNallySan Francisco, CA 941431699054718
- Amy Murtha, M.D.San Francisco, CA 941431013066034
Common questions
What is Patricia A. Robertson, M.D.'s NPI number?
Patricia A. Robertson, M.D.'s National Provider Identifier (NPI) is 1053352302, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Patricia A. Robertson, M.D. located?
The NPPES record lists a practice address at 400 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-2566. Providers update this record themselves, so call before visiting.
How can I verify Patricia A. Robertson, M.D.'s license?
NPPES lists California license number G36091, as entered by the provider. 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 Patricia A. Robertson, M.D. prescribe under Medicare Part D?
In 2024, Patricia A. Robertson, M.D. had 27 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
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.