William Zepf, MD
NPI 1063512069 · Family Medicine Physician · Davis, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Zepf, MD is a Family Medicine Physician provider in Davis, CA (NPI 1063512069).
Provider details
- NPI number
- 1063512069
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G72554 (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
783 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 | 288 | $135 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 134 | $17 |
| Administration of Influenza Virus VaccineG0008 | 102 | $34 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 92 | $189 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $96 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 92 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Valsartan | 214 | 65 |
| Hydrochlorothiazide | 207 | 57 |
| Atorvastatin Calcium | 178 | 51 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 135 | 28 |
| Gabapentin | 133 | 41 |
| Spironolactone | 123 | 35 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-22
- Last updated
- 2015-06-12
Frequently asked questions
- What is William Zepf's NPI number?
- William Zepf's National Provider Identifier (NPI) is 1063512069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Zepf's specialty?
- William Zepf is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Zepf located?
- William Zepf's practice location on file with NPPES is 2030 Sutter Pl, Davis, CA 95616-6201.
- What is William Zepf's phone number?
- The practice phone number listed in the NPPES registry for William Zepf is (530) 750-5800.
- Does William Zepf accept Medicare?
- William Zepf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Zepf's NPI active?
- Yes — William Zepf's NPI (1063512069) is active in the NPPES registry as of the last update on 2015-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.