William J Holmes, M.D., Inc
NPI 1144418070 · Specialist · Modesto, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William J Holmes, M.D., Inc is a Specialist organization in Modesto, CA (NPI 1144418070).
Provider details
- NPI number
- 1144418070
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- William Holmes, President(209) 524-5977
- License
- G81678 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-10-04
- Last updated
- 2013-03-11
Frequently asked questions
- What is William J Holmes, M.D., Inc's NPI number?
- William J Holmes, M.D., Inc's National Provider Identifier (NPI) is 1144418070, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William J Holmes, M.D., Inc?
- William J Holmes, M.D., Inc is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is William J Holmes, M.D., Inc located?
- William J Holmes, M.D., Inc's practice location on file with NPPES is 1335 Coffee Rd Ste 100, Modesto, CA 95355-3192.
- What is William J Holmes, M.D., Inc's phone number?
- The practice phone number listed in the NPPES registry for William J Holmes, M.D., Inc is (209) 524-5977.
- Does William J Holmes, M.D., Inc accept Medicare?
- William J Holmes, M.D., Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for William J Holmes, M.D., Inc?
- The authorized official listed on William J Holmes, M.D., Inc's NPPES record is William Holmes, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William J Holmes, M.D., Inc's NPI active?
- Yes — William J Holmes, M.D., Inc's NPI (1144418070) is active in the NPPES registry as of the last update on 2013-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.