Ivan Dedrick Gavin Hamilton, M.D.
Internal Medicine Physician · San Francisco, CA
Ivan Dedrick Gavin Hamilton, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1669421202, issued on May 10, 2006. Check the license (California A104632, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ivan Dedrick Gavin Hamilton
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A104632 CA
D63437 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2351 Clay St, San Francisco, CA 94115
- Phone
- (415) 600-3458
- Enumerated
- May 10, 2006
- Record last updated
- May 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (415) 600-3451
- Medicaid IDs
- 408417900 MD
1669421202 CA - Medicare enrollment
- Enrolled (PECOS I20081119000205); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2351 Clay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Au, M.D.Student in an Organized Health Care Education/Training Program1902148091
- Geoffrey Bailey-Gates, M.D.Student in an Organized Health Care Education/Training Program1306137708
- Christopher Brown, MDPulmonary Disease Physician1104900901
- Tze-Ming Chen, M.D.Pulmonary Disease Physician1215092705
- Ivan Cheng, MDCritical Care Medicine (Internal Medicine) Physician1639253438
- Lisa Chui, M.D.Student in an Organized Health Care Education/Training Program1689992927
Verify Ivan Dedrick Gavin Hamilton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A104632Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- LA Clinica DE LA Raza IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ivan Dedrick Gavin Hamilton among 17,696 internal medicine physician records in California
Ivan Dedrick Gavin Hamilton, 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 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
- Graduated2002 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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
- Gary Arsham, M.D.San Francisco, CA 941151487646758
- Richard Caplin, M.D.San Francisco, CA 941151568443455
- C Cooney, M.D.San Francisco, CA 941151255332094
- Sarita Dubey, MDSan Francisco, CA 941151316905466
- Meredith Heller, M.D.San Francisco, CA 941151073562096
- Alan Leung, MDSan Francisco, CA 941151245222330
- Susan Nguyen, MDSan Francisco, CA 941151164470696
- Daniel Null, MDSan Francisco, CA 941151689638744
Common questions
What is Ivan Dedrick Gavin Hamilton, M.D.'s NPI number?
Ivan Dedrick Gavin Hamilton, M.D.'s National Provider Identifier (NPI) is 1669421202, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ivan Dedrick Gavin Hamilton, M.D. located?
The NPPES record lists a practice address at 2351 Clay St, San Francisco, CA, 94115. Phone: (415) 600-3458. Providers update this record themselves, so call before visiting.
How can I verify Ivan Dedrick Gavin Hamilton, M.D.'s license?
NPPES lists California license number A104632, 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.
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.