Benjamin Fletcher Cox, M.D.
Internal Medicine Physician · San Francisco, CA
Benjamin Fletcher Cox, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1588939771, issued on Mar 20, 2012. Check the license (California A127057, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin Fletcher Cox
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A127057 CA
Self-reported in NPPES; status is on the state search - Practice location
- 98 Gough St, San Francisco, CA 94102
- Phone
- (415) 291-0480
- Enumerated
- Mar 20, 2012
- Record last updated
- Oct 28, 2022
- Medicare enrollment
- Enrolled (PECOS I20141206000034); may accept Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2012
- Entity
- Type 1 · individual
Also registered at 98 Gough St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nai AjeroPhysician Assistant1841155256
- Morgan CavanaughPhysician Assistant1932960986
- Sevasti Dames, MDEmergency Medicine Physician1619022233
- Rosemarie Dominia, FNP-BCNurse Practitioner1215371844
- Harlington Hanna, MDInternal Medicine Physician1861977324
- Melissa Heyer, PA-CPhysician Assistant1043555170
Verify Benjamin Fletcher Cox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A127057Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average internal medicine physician in 2024
400 Medicare Part D claims for 88 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium38 claims
- Gabapentin30 claims
- Lisinopril20 claims
- Trazodone Hcl19 claims
- Clonazepam14 claims
- Bupropion Xl13 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.
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 1,318 in San Francisco → All 17,696 in California → Every provider in San Francisco →
Other internal medicine physician records in California
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- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Benjamin Fletcher Cox, M.D.'s NPI number?
Benjamin Fletcher Cox, M.D.'s National Provider Identifier (NPI) is 1588939771, issued on Mar 20, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Fletcher Cox, M.D. located?
The NPPES record lists a practice address at 98 Gough St, San Francisco, CA, 94102. Phone: (415) 291-0480. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Fletcher Cox, M.D.'s license?
NPPES lists California license number A127057, 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 Benjamin Fletcher Cox, M.D. prescribe under Medicare Part D?
In 2024, Benjamin Fletcher Cox, M.D. had 400 Medicare Part D claims for 88 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.