Mark Andrew Hoffman, M.D.
Internal Medicine Physician · Pasadena, CA
Mark Andrew Hoffman, M.D. is an internal medicine physician with a practice address in Pasadena, California, and NPI 1902860109, issued on Apr 14, 2006. Check the license (California A87000, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Andrew Hoffman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A87000 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 S Fair Oaks Ave, Pasadena, CA 91105
- Phone
- (626) 755-3642
- Enumerated
- Apr 14, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041229001037); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 401 S Fair Oaks Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Andrew Hoffman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A87000Check 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 internal medicine physician in 2024
300 Medicare Part D claims for 238 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefpodoxime Proxetil43 claims
- Azithromycin35 claims
- Losartan Potassium17 claims
- Cephalexin16 claims
- Amoxicillin12 claims
- Prednisone11 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
- Southern California Permanente Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Andrew Hoffman among 17,696 internal medicine physician records in California
Mark Andrew Hoffman, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2000 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
137 internal medicine physician records list a practice address in Pasadena
They are 137 of the 10,525 NPPES records with a practice address in Pasadena, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Pasadena → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dolores Barba, MDPasadena, CA 911051992700603
- Barry Blum, MDPasadena, CA 911051639141716
- Betsy Felser, MDPasadena, CA 911051144292897
- Todd Hee, M.D.Pasadena, CA 911051689648693
- Wei Huang-Lee, MDPasadena, CA 911051972576841
- George Jung, MDPasadena, CA 911051720051881
- Kristin Karlyn, MDPasadena, CA 911051033182530
- Malathi Narayan, MDPasadena, CA 911051588637466
Common questions
What is Mark Andrew Hoffman, M.D.'s NPI number?
Mark Andrew Hoffman, M.D.'s National Provider Identifier (NPI) is 1902860109, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Andrew Hoffman, M.D. located?
The NPPES record lists a practice address at 401 S Fair Oaks Ave, Pasadena, CA, 91105. Phone: (626) 755-3642. Providers update this record themselves, so call before visiting.
How can I verify Mark Andrew Hoffman, M.D.'s license?
NPPES lists California license number A87000, 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 Mark Andrew Hoffman, M.D. prescribe under Medicare Part D?
In 2024, Mark Andrew Hoffman, M.D. had 300 Medicare Part D claims for 238 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.