Mark F. Eastman, MD
Family Medicine Physician · Riverside, CA
Mark F. Eastman, MD is a family medicine physician with a practice address in Riverside, California, and NPI 1275681074, issued on Jan 8, 2007. Check the license (California G55132, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark F. Eastman
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G55132 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (909) 353-2000
- Enumerated
- Jan 8, 2007
- Record last updated
- Dec 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
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Verify Mark F. Eastman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55132Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
519 Medicare Part D claims for 143 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium48 claims
- Rosuvastatin Calcium39 claims
- Lisinopril23 claims
- Metoprolol Tartrate22 claims
- Losartan Potassium20 claims
- Simvastatin20 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.
Mark F. Eastman among 17,133 family medicine physician records in California
Mark F. Eastman, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
258 family medicine physician records list a practice address in Riverside
They are 258 of the 13,893 NPPES records with a practice address in Riverside, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Riverside → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Francis Chu, MDRiverside, CA 925051225105166
- Vanessa Ho, MDRiverside, CA 925051679512776
- Judith Holmes, MDRiverside, CA 925051740357615
- Paul Hsiang, MDRiverside, CA 925051841367679
- Emanuel Kristianto, MDRiverside, CA 925051063589075
- Richard Liu, MDRiverside, CA 925051396812277
- Michele Martinez, MD.Riverside, CA 925051205939204
- Karen McBride, MDRiverside, CA 925051841378395
Common questions
What is Mark F. Eastman, MD's NPI number?
Mark F. Eastman, MD's National Provider Identifier (NPI) is 1275681074, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark F. Eastman, MD located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (909) 353-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark F. Eastman, MD's license?
NPPES lists California license number G55132, 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 F. Eastman, MD prescribe under Medicare Part D?
In 2024, Mark F. Eastman, MD had 519 Medicare Part D claims for 143 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.