Mark Ewens, M.D.
NPI 1689602773 · Family Medicine Physician · Davis, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1689602773
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A71440 (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
937 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 476 | $100 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 238 | $139 |
| Administration of Influenza Virus VaccineG0008 | 55 | $34 |
| Admn Sarscov2 Vacc 1 Dose90480 | 41 | $46 |
| Automated Urinalysis Test81003 | 27 | $2 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 25 | $231 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 131 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 453 | 120 |
| Losartan Potassium | 360 | 96 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 304 | 70 |
| Lisinopril | 289 | 85 |
| Levothyroxine Sodium | 263 | 70 |
| Omeprazole | 252 | 78 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-29
- Last updated
- 2013-10-30
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.