Seth Ari Sim-Son Hoffman, MD
Infectious Disease Physician · Stanford, CA
Seth Ari Sim-Son Hoffman, MD is an infectious disease physician with a practice address in Stanford, California, and NPI 1487187829, issued on Apr 4, 2017. Check the license (California A169608, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Seth Ari Sim-Son Hoffman
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A169608 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Apr 4, 2017
- Record last updated
- Feb 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20231108000104); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Seth Ari Sim-Son Hoffman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A169608Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average infectious disease physician in 2024
72 Medicare Part D claims for 54 beneficiaries, against an average of 689 among the 7,388 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.
2 hospitals and group practices
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
- County OF Santa ClaraSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Seth Ari Sim-Son Hoffman among 1,119 infectious disease physician records in California
Seth Ari Sim-Son Hoffman, MD 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 2017, is newer than 88% of them.
- NPI issued2017 · 88% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · 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).
58 infectious disease physician records list a practice address in Stanford
They are 58 of the 5,606 NPPES records with a practice address in Stanford, and 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Stanford → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Eran Bendavid, MDStanford, CA 943051144330069
- Brian Blackburn, MDStanford, CA 943051861542680
- Catherine Blish, MDStanford, CA 943051710067285
- Hector Bonilla, MDStanford, CA 943051225115371
- Philip Grant, MDStanford, CA 943051205949070
- Michael Harbour, MDStanford, CA 943051013022169
- Dora Ho, MDStanford, CA 943051619032224
- Shanthi Kappagoda, M.D.Stanford, CA 943051720195381
Common questions
What is Seth Ari Sim-Son Hoffman, MD's NPI number?
Seth Ari Sim-Son Hoffman, MD's National Provider Identifier (NPI) is 1487187829, issued on Apr 4, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Seth Ari Sim-Son Hoffman, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Seth Ari Sim-Son Hoffman, MD's license?
NPPES lists California license number A169608, 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 Ari Sim-Son Hoffman, MD prescribe under Medicare Part D?
In 2024, Seth Ari Sim-Son Hoffman, MD had 72 Medicare Part D claims for 54 beneficiaries; the average among infectious disease physician prescribers was 689. 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.