Carolyn Petersen, M.D.
Internal Medicine Physician · Sausalito, CA
Carolyn Petersen, M.D. is an internal medicine physician with a practice address in Sausalito, California, and NPI 1215381173, issued on Apr 18, 2016. Check the license (California G32490, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Carolyn Petersen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G32490 CA
Self-reported in NPPES; status is on the state search - Practice location
- 509 Litho St, Sausalito, CA 94965
- Phone
- (415) 521-0481
- Enumerated
- Apr 18, 2016
- Record last updated
- Apr 18, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Carolyn Petersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G32490Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% 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.
Carolyn Petersen among 17,696 internal medicine physician records in California
Carolyn Petersen, M.D. 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 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2016 · 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).
7 internal medicine physician records list a practice address in Sausalito
They are 7 of the 200 NPPES records with a practice address in Sausalito, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sausalito → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Chase, MDSausalito, CA 949651457423105
- Siegried Audfrey Chin, MDSausalito, CA 949651578295879
- Keith Desrochers, MDSausalito, CA 949651396163416
- Bradly Jacobs, MDSausalito, CA 949651184680258
- Matthew Meldorf, M.D.Sausalito, CA 949651396002812
- Lawrence Posner, MDSausalito, CA 949651952390098
- Clarene David, M.D.San Quentin, CA 949641093917155
- Renee Kanan, MDSan Quentin, CA 949641255520565
Common questions
What is Carolyn Petersen, M.D.'s NPI number?
Carolyn Petersen, M.D.'s National Provider Identifier (NPI) is 1215381173, issued on Apr 18, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Carolyn Petersen, M.D. located?
The NPPES record lists a practice address at 509 Litho St, Sausalito, CA, 94965. Phone: (415) 521-0481. Providers update this record themselves, so call before visiting.
How can I verify Carolyn Petersen, M.D.'s license?
NPPES lists California license number G32490, 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 Carolyn Petersen, M.D. prescribe under Medicare Part D?
In 2024, Carolyn Petersen, M.D. had 11 Medicare Part D claims; 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.