John David Szumowski, M.D., M.P.H.
Infectious Disease Physician · San Francisco, CA
John David Szumowski, M.D., M.P.H. is an infectious disease physician with a practice address in San Francisco, California, and NPI 1750558615, issued on May 9, 2008. Check the license (California 128301, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John David Szumowski
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 128301 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 Clement St, San Francisco, CA 94121
- Phone
- (415) 221-4810
- Enumerated
- May 9, 2008
- Record last updated
- Aug 12, 2025
- Fax
- (415) 750-6951
- Medicaid ID
- 1750558615 WA
- Medicare enrollment
- Enrolled (PECOS I20150119000617); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2007
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 4150 Clement St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Abram, BAPsychologist1326540436
- Gary Abrams, M.D.Physical Medicine & Rehabilitation Physician1346213246
- Anna Abramson, M.D.Internal Medicine Physician1346424785
- Alison Acerra, MS, RDRegistered Dietitian1992726848
- Sharon AdelsonCounselor1932467271
- Gary Agcaoili, C.T.R.SRecreation Therapist1649284019
Verify John David Szumowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 128301Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.6 times the Medicare Part D claims of the average infectious disease physician in 2024
3,136 Medicare Part D claims for 97 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims. 57 claims were for opioids.
Most prescribed
- Biktarvy201 claims
- Atorvastatin Calcium195 claims
- Tivicay111 claims
- Tamsulosin Hcl96 claims
- Metformin Hcl Er94 claims
- Metoprolol Succinate77 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- City And County OF San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John David Szumowski among 1,119 infectious disease physician records in California
John David Szumowski, M.D., M.P.H. is one of 1,119 infectious disease 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 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2007 · median 2003 among the 735 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in San Francisco → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- John Colford, MD, MPH, PHDSan Francisco, CA 941211669485215
- Peter Dull, M.D.San Francisco, CA 941211154401966
- Bryan Greenhouse, MDSan Francisco, CA 941211063561918
- Peter Jensen, M.D.San Francisco, CA 941211598772733
- Yiannis Koullias, MDSan Francisco, CA 941211659752939
- Harry Lampiris, M.D.San Francisco, CA 941211871506758
- Arjun Rustagi, M.D., PH.D.San Francisco, CA 941211346635083
- Paul Sullam, M.D.San Francisco, CA 941211992807994
Common questions
What is John David Szumowski, M.D., M.P.H.'s NPI number?
John David Szumowski, M.D., M.P.H.'s National Provider Identifier (NPI) is 1750558615, issued on May 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John David Szumowski, M.D., M.P.H. located?
The NPPES record lists a practice address at 4150 Clement St, San Francisco, CA, 94121. Phone: (415) 221-4810. Providers update this record themselves, so call before visiting.
How can I verify John David Szumowski, M.D., M.P.H.'s license?
NPPES lists California license number 128301, 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 John David Szumowski, M.D., M.P.H. prescribe under Medicare Part D?
In 2024, John David Szumowski, M.D., M.P.H. had 3,136 Medicare Part D claims for 97 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is John David Szumowski, M.D., M.P.H.'s MIPS final score?
The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.