William Holmes, M.D.
NPI 1528001815 · Internal Medicine Physician · Fresno, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Holmes, M.D. is a Internal Medicine Physician provider in Fresno, CA (NPI 1528001815).
Provider details
- NPI number
- 1528001815
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G32816 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,148 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 430 | $92 |
| 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 | 341 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 165 | $130 |
| Automated Urinalysis Test81003 | 45 | $2 |
| Administration of Influenza Virus VaccineG0008 | 38 | $33 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 84 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 268 | 82 |
| Amlodipine Besylate | 175 | 57 |
| Levothyroxine Sodium | 172 | 51 |
| Losartan Potassium | 140 | 43 |
| Lisinopril | 135 | 43 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 122 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,546 across 45 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-14
- Last updated
- 2010-08-11
Frequently asked questions
- What is William Holmes's NPI number?
- William Holmes's National Provider Identifier (NPI) is 1528001815, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Holmes's specialty?
- William Holmes is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Holmes located?
- William Holmes's practice location on file with NPPES is 4770 W Herndon Ave, Fresno, CA 93722-8402.
- What is William Holmes's phone number?
- The practice phone number listed in the NPPES registry for William Holmes is (559) 271-6365.
- Does William Holmes accept Medicare?
- William Holmes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Holmes's NPI active?
- Yes — William Holmes's NPI (1528001815) is active in the NPPES registry as of the last update on 2010-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.