Mark Eastman, D.O.
NPI 1538250899 · Obstetrics & Gynecology Physician · Jackson, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Eastman, D.O. is a Obstetrics & Gynecology Physician provider in Jackson, CA (NPI 1538250899).
Provider details
- NPI number
- 1538250899
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A7345 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
321 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 177 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 104 | $82 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 40 | $132 |
Typical Medicare-allowed amounts for these services range $82–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 141 | 40 |
| Amlodipine Besylate | 60 | 17 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 53 | — |
| Levothyroxine Sodium | 52 | 14 |
| Lisinopril | 45 | 12 |
| Atorvastatin Calcium | 32 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2012-09-07
Frequently asked questions
- What is Mark Eastman's NPI number?
- Mark Eastman's National Provider Identifier (NPI) is 1538250899, 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 Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Eastman located?
- Mark Eastman's practice location on file with NPPES is 235 New York Ranch Rd, Jackson, CA 95642-9403.
- What is Mark Eastman's phone number?
- The practice phone number listed in the NPPES registry for Mark Eastman is (209) 257-1057.
- 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 (1538250899) is active in the NPPES registry as of the last update on 2012-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.