Mark Eastman, MD
NPI 1275681074 · Family Medicine Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Eastman, MD is a Family Medicine Physician provider in Riverside, CA (NPI 1275681074).
Provider details
- NPI number
- 1275681074
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G55132 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 48 | 27 |
| Rosuvastatin Calcium | 39 | 12 |
| Lisinopril | 23 | 15 |
| Metoprolol Tartrate | 22 | — |
| Simvastatin | 20 | 11 |
| Losartan Potassium | 20 | 14 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-08
- Last updated
- 2021-12-02
Frequently asked questions
- What is Mark Eastman's NPI number?
- Mark Eastman's National Provider Identifier (NPI) is 1275681074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Eastman's specialty?
- Mark Eastman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Eastman located?
- Mark Eastman's practice location on file with NPPES is 10800 Magnolia Ave, Riverside, CA 92505-3043.
- What is Mark Eastman's phone number?
- The practice phone number listed in the NPPES registry for Mark Eastman is (909) 353-2000.
- Does Mark Eastman accept Medicare?
- Mark Eastman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Eastman's NPI active?
- Yes — Mark Eastman's NPI (1275681074) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.