Petia B. Kremen, MD
Internal Medicine Physician · San Francisco, CA
Petia B. Kremen, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1861570418, issued on Nov 1, 2006. Check the license (California A84772, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Petia B. Kremen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A84772 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 W Portal Ave, San Francisco, CA 94127
- Phone
- (888) 663-6331
- Enumerated
- Nov 1, 2006
- Record last updated
- Jan 20, 2023
- Medicaid ID
- 00A847720 CA
- Medicare enrollment
- Enrolled (PECOS I20050516000361); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2 W Portal Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Clarke, CRNPNurse Practitioner1659071801
- Victoria Lau, D.O.Family Medicine Physician1336482298
- Nina Metsovaara, NP-C, FNPFamily Nurse Practitioner1356706634
- David Sly, DOFamily Medicine Physician1255387148
- Anna Tellefsen, NPPediatric Nurse Practitioner1982342770
- Chelsea Thomsen, M.D., M.S.P.HInternal Medicine Physician1003227927
Verify Petia B. Kremen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A84772Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
68 Medicare Part D claims for 44 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of 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.
Bills Medicare through one group practice
- City And County OF San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Petia B. Kremen among 17,696 internal medicine physician records in California
Petia B. Kremen, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1995 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Chin, M.D.San Francisco, CA 941271588825640
- Joel Lopez, M.D.San Francisco, CA 941271376679910
- Neil Solomon, M.D.San Francisco, CA 941271861598450
- Mary Jean Stempien, M.D.San Francisco, CA 941271073734521
- Chelsea Thomsen, M.D., M.S.P.HSan Francisco, CA 941271003227927
- Silva Yuen, MDSan Francisco, CA 941271336201755
- John Hall, MDSan Francisco, CA 941251861423600
- Ross Quinn, MDSan Francisco, CA 941241871082602
Common questions
What is Petia B. Kremen, MD's NPI number?
Petia B. Kremen, MD's National Provider Identifier (NPI) is 1861570418, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Petia B. Kremen, MD located?
The NPPES record lists a practice address at 2 W Portal Ave, San Francisco, CA, 94127. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Petia B. Kremen, MD's license?
NPPES lists California license number A84772, 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 Petia B. Kremen, MD prescribe under Medicare Part D?
In 2024, Petia B. Kremen, MD had 68 Medicare Part D claims for 44 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.