OrganizationActive
William H. Phillips, M.D., Inc.
NPI 1922283357 · Specialist · Pleasanton, CA
William H. Phillips, M.D., Inc. is a Specialist organization in Pleasanton, CA (NPI 1922283357).
Provider details
- NPI number
- 1922283357
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- William Phillips, Physician(925) 734-6655
- License
- G52644 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(88/100 index)
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
5575 W Las Positas Blvd
Suite 330
Pleasanton, CA 94588-5801
Phone: (925) 734-6644
Fax: (925) 734-9294
Street-level locationGet directions
Mailing address
5575 W Las Positas Blvd
Pleasanton, CA 94588-5801
Registry dates
- Enumerated
- 2008-01-03
- Last updated
- 2008-01-03
Frequently asked questions
- What is William H. Phillips, M.D., Inc.'s NPI number?
- William H. Phillips, M.D., Inc.'s National Provider Identifier (NPI) is 1922283357, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William H. Phillips, M.D., Inc.?
- William H. Phillips, M.D., Inc. is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is William H. Phillips, M.D., Inc. located?
- William H. Phillips, M.D., Inc.'s practice location on file with NPPES is 5575 W Las Positas Blvd, Pleasanton, CA 94588-5801.
- What is William H. Phillips, M.D., Inc.'s phone number?
- The practice phone number listed in the NPPES registry for William H. Phillips, M.D., Inc. is (925) 734-6644.
- Who is the authorized official for William H. Phillips, M.D., Inc.?
- The authorized official listed on William H. Phillips, M.D., Inc.'s NPPES record is William Phillips, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William H. Phillips, M.D., Inc.'s NPI active?
- Yes — William H. Phillips, M.D., Inc.'s NPI (1922283357) is active in the NPPES registry as of the last update on 2008-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.