Seth Blumberg, MD PHD
Hospitalist Physician · San Francisco, CA
Seth Blumberg, MD PHD is a hospitalist physician with a practice address in San Francisco, California, and NPI 1255595443, issued on Jul 16, 2008. Check the license (California A112063, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Seth Blumberg
- Credential
- MD PHD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- A112063 CA
AFE112063 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 750-4993
- Enumerated
- Jul 16, 2008
- Record last updated
- Feb 24, 2022
- Fax
- (415) 750-8156
- Medicare enrollment
- Enrolled (PECOS I20200401000194); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2008
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 505 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
- Abul Abbas, MBBSAnatomic Pathology Physician1881652964
- Jesse Abelson, MDInternal Medicine Physician1083843817
- Rhonald AbitonaAcute Care Nurse Practitioner1164993473
Verify Seth Blumberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A112063Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average hospitalist physician in 2024
47 Medicare Part D claims for 21 beneficiaries, against an average of 521 among the 21,613 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 one group practice
- Regents OF The University OF CaliforniaSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Seth Blumberg among 3,099 hospitalist physician records in California
Seth Blumberg, MD PHD is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 34% of them.
- NPI issued2008 · 34% of these records are older, 61% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2008 · median 2010 among the 2,505 with a school on file
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Francisco → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Robertino Garcia Cortes, MDSan Francisco, CA 941431770872590
- Robin Goldman, MD, MPHSan Francisco, CA 941431033439906
- Win Han, MDSan Francisco, CA 941431619110384
- Ari HoffmanSan Francisco, CA 941431346566221
- Alison Kuchta, M.D.San Francisco, CA 941431063704963
- Andrew Lai, M.D.San Francisco, CA 941431861666281
- Khoa Lam, M.D.San Francisco, CA 941431801114095
- Rebecca Nessel, MDSan Francisco, CA 941431861439085
Common questions
What is Seth Blumberg, MD PHD's NPI number?
Seth Blumberg, MD PHD's National Provider Identifier (NPI) is 1255595443, issued on Jul 16, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Seth Blumberg, MD PHD located?
The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 750-4993. Providers update this record themselves, so call before visiting.
How can I verify Seth Blumberg, MD PHD's license?
NPPES lists California license number A112063, 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 Seth Blumberg, MD PHD prescribe under Medicare Part D?
In 2024, Seth Blumberg, MD PHD had 47 Medicare Part D claims for 21 beneficiaries; the average among hospitalist physician prescribers was 521. 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.