Bennett Harris Penn, MD, PHD
Infectious Disease Physician · San Francisco, CA
Bennett Harris Penn, MD, PHD is an infectious disease physician with a practice address in San Francisco, California, and NPI 1275715245, issued on Dec 3, 2007. Check the license (California A101621, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bennett Harris Penn
- Credential
- MD, PHD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A101621 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 353-2626
- Enumerated
- Dec 3, 2007
- Record last updated
- Jun 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090327000441); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 400 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Weiyun Ai, MDMedical Oncology Physician1649346842
Verify Bennett Harris Penn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101621Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average infectious disease physician in 2024
47 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Isoniazid19 claims
- Rifampin14 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 2 group practices
- County OF SacramentoSacramento, CA
- Regents OF The Univ OF CASacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bennett Harris Penn among 1,119 infectious disease physician records in California
Bennett Harris Penn, MD, PHD 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 41% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2003 among the 735 with a school on file
- Record last updated2020 · 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
- Cameron Ashbaugh, MDSan Francisco, CA 941431114900537
- Oliver Bacon, M.D.San Francisco, CA 941431497863146
- Huyen Cao, MDSan Francisco, CA 941431700842234
- Peter Chin-Hong, MDSan Francisco, CA 941431215988563
- John Fangman, MDSan Francisco, CA 941431881645737
- Timothy Henrich, M.D.San Francisco, CA 941431902831902
- Vivek Jain, M.D.San Francisco, CA 941431093747248
- Jane Koehler, MDSan Francisco, CA 941431689632747
Common questions
What is Bennett Harris Penn, MD, PHD's NPI number?
Bennett Harris Penn, MD, PHD's National Provider Identifier (NPI) is 1275715245, issued on Dec 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Bennett Harris Penn, MD, PHD located?
The NPPES record lists a practice address at 400 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-2626. Providers update this record themselves, so call before visiting.
How can I verify Bennett Harris Penn, MD, PHD's license?
NPPES lists California license number A101621, 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 Bennett Harris Penn, MD, PHD prescribe under Medicare Part D?
In 2024, Bennett Harris Penn, MD, PHD had 47 Medicare Part D claims; 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.