Mitchell H. Katz, MD
Internal Medicine Physician · San Francisco, CA
Mitchell H. Katz, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1205959533, issued on Apr 10, 2007. Check the license (California G61707, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mitchell H. Katz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G61707 CA
Self-reported in NPPES; status is on the state search - Practice location
- 995 Potrero Ave Bldg.80 WD 86, San Francisco, CA 94110
- Phone
- (415) 206-2400
- Enumerated
- Apr 10, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 554-2888
- Medicare enrollment
- Enrolled (PECOS I20210408000829); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1982
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 995 Potrero Ave Bldg.80 WD 86
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rosemary De Perez, NP MSNAmbulatory Care Registered Nurse1114128386
Verify Mitchell H. Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G61707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
436 Medicare Part D claims for 20 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium56 claims
- Amlodipine Besylate48 claims
- Levothyroxine Sodium26 claims
- Metformin Hcl17 claims
- Benazepril-Hydrochlorothiazide14 claims
- Gabapentin14 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
- New York City Health And Hospitals CorporationNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mitchell H. Katz among 17,696 internal medicine physician records in California
Mitchell H. Katz, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1982 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 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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- Howard Graves, MD PHDSan Francisco, CA 941101427090869
- Stephen Hoffman, MDSan Francisco, CA 941101265476147
- Daniel Kahler, D.O.San Francisco, CA 941101629019781
- Jeanette Krolikowski, D.O.San Francisco, CA 941101962471920
- John Metcalfe, M.D.San Francisco, CA 941101154399350
- Hedda Orkin, MDSan Francisco, CA 941101093753030
Common questions
What is Mitchell H. Katz, MD's NPI number?
Mitchell H. Katz, MD's National Provider Identifier (NPI) is 1205959533, issued on Apr 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell H. Katz, MD located?
The NPPES record lists a practice address at 995 Potrero Ave Bldg.80 WD 86, San Francisco, CA, 94110. Phone: (415) 206-2400. Providers update this record themselves, so call before visiting.
How can I verify Mitchell H. Katz, MD's license?
NPPES lists California license number G61707, 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 Mitchell H. Katz, MD prescribe under Medicare Part D?
In 2024, Mitchell H. Katz, MD had 436 Medicare Part D claims for 20 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.