Fletcher Martin Bell, MD
Internal Medicine Physician · San Francisco, CA
Fletcher Martin Bell, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1811647514, issued on Mar 25, 2022. Check the license (California A189346, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Fletcher Martin Bell
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A189346 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1600 Divisadero St, San Francisco, CA 94143
- Phone
- (415) 567-6600
- Enumerated
- Mar 25, 2022
- Record last updated
- Mar 14, 2025
- Medicare enrollment
- Enrolled (PECOS I20250324002198); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2022
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1600 Divisadero St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lauren Boreta, M.D.Radiation Oncology Physician1679990071
- Ronald Braun, M.D.Anesthesiology Physician1700865367
- Daniel BrissendenInternal Medicine Physician1871378794
Verify Fletcher Martin Bell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A189346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
32 Medicare Part D claims for 19 beneficiaries, against an average of 3,176 among the 108,855 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 3 group practices
- Regents OF The University OF CaliforniaSan Francisco, CA
- Ucsf Medical Group Business ServicesBurlingame, CA
- 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).
Fletcher Martin Bell among 17,696 internal medicine physician records in California
Fletcher Martin Bell, 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 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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
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- Katherine Julian, MDSan Francisco, CA 941431003879826
- John Kane, MDSan Francisco, CA 941431467416461
- Suneil Koliwad, M.D., PH.D.San Francisco, CA 941431225006687
- Bernard Lo, MDSan Francisco, CA 941431184688137
- Stephen McPhee, MDSan Francisco, CA 941431124082490
- Andrew Posselt, MDSan Francisco, CA 941431235193616
Common questions
What is Fletcher Martin Bell, MD's NPI number?
Fletcher Martin Bell, MD's National Provider Identifier (NPI) is 1811647514, issued on Mar 25, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Fletcher Martin Bell, MD located?
The NPPES record lists a practice address at 1600 Divisadero St, San Francisco, CA, 94143. Phone: (415) 567-6600. Providers update this record themselves, so call before visiting.
How can I verify Fletcher Martin Bell, MD's license?
NPPES lists California license number A189346, 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 Fletcher Martin Bell, MD prescribe under Medicare Part D?
In 2024, Fletcher Martin Bell, MD had 32 Medicare Part D claims for 19 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.