Mark James Finch, M.D.
Infectious Disease Physician · Hayward, CA
Mark James Finch, M.D. is an infectious disease physician with a practice address in Hayward, California, and NPI 1730248196, issued on Dec 8, 2006. Check the license (California G524080, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark James Finch
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- G524080 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27200 Calaroga Ave, Hayward, CA 94545
- Phone
- (510) 881-0644
- Enumerated
- Dec 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (510) 881-0644
- Medicaid ID
- 00G524081 CA
- Medicare enrollment
- Enrolled (PECOS I20050124000833); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 27200 Calaroga Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yahya Ahmed, M.D.Internal Medicine Physician1124283312
- Neelima Akkinapalli, P.A.Physician Assistant1154523496
- Matthew Andrews, NPAcute Care Nurse Practitioner1699645424
- Yalda Bahrani, FNP-CNurse Practitioner1770182388
- Manon Baze, PAPhysician Assistant1104849520
- John Bell, M.D.Internal Medicine Physician1720282932
Verify Mark James Finch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G524080Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average infectious disease physician in 2024
97 Medicare Part D claims for 17 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Lamivudine-Zidovudine12 claims
- Nevirapine11 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
- Diablo Infectious Disease Consultative Service Med Grp IncSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark James Finch among 1,119 infectious disease physician records in California
Mark James Finch, M.D. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1979 · median 2003 among the 735 with a school on file
- Record last updated2007 · 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 Hayward → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Daniel Klein, MDHayward, CA 945451245318096
- Harkiran Grewal, MDCastro Valley, CA 945461790022416
- Steven Oppenheimer, MDCastro Valley, CA 945461962435396
- Michael Ascher, M.D.Lafayette, CA 945491033427505
- James Pennington, M.D.Lafayette, CA 945491184962144
- Loretta Obrien, MDLivermore, CA 945501750379657
- Muni Barash, M.D.Fremont, CA 945381962428896
- Harman Chawla, M.D.Fremont, CA 945381518251701
Common questions
What is Mark James Finch, M.D.'s NPI number?
Mark James Finch, M.D.'s National Provider Identifier (NPI) is 1730248196, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark James Finch, M.D. located?
The NPPES record lists a practice address at 27200 Calaroga Ave, Hayward, CA, 94545. Phone: (510) 881-0644. Providers update this record themselves, so call before visiting.
How can I verify Mark James Finch, M.D.'s license?
NPPES lists California license number G524080, 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 James Finch, M.D. prescribe under Medicare Part D?
In 2024, Mark James Finch, M.D. had 97 Medicare Part D claims for 17 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.