William Holmes, M.D.
NPI 1700811700 · Diagnostic Radiology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Holmes, M.D. is a Diagnostic Radiology Physician provider in Orange, CA (NPI 1700811700).
Provider details
- NPI number
- 1700811700
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 227340 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2009-01-09
Frequently asked questions
- What is William Holmes's NPI number?
- William Holmes's National Provider Identifier (NPI) is 1700811700, 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 Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Holmes located?
- William Holmes's practice location on file with NPPES is 431 S Batavia St, Orange, CA 92868-3936.
- What is William Holmes's phone number?
- The practice phone number listed in the NPPES registry for William Holmes is (714) 538-6731.
- 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 (1700811700) is active in the NPPES registry as of the last update on 2009-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.