Jeffrey Williams, M.D., PHD
NPI 1942304977 · Endocrinology, Diabetes & Metabolism Physician · Santa Cruz, CA
Jeffrey Williams, M.D., PHD is a Endocrinology, Diabetes & Metabolism Physician provider in Santa Cruz, CA (NPI 1942304977).
Provider details
- NPI number
- 1942304977
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD
- Sex
- Male
- Sole proprietor
- No
- License
- G52869 (CA)
Specialties & taxonomies
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
- 2006-09-11
- Last updated
- 2007-07-09
Frequently asked questions
- What is Jeffrey Williams's NPI number?
- Jeffrey Williams's National Provider Identifier (NPI) is 1942304977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Williams's specialty?
- Jeffrey Williams is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Williams located?
- Jeffrey Williams's practice location on file with NPPES is 1595 Soquel Dr, Santa Cruz, CA 95065-1719.
- What is Jeffrey Williams's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Williams is (831) 465-7778.
- Is Jeffrey Williams's NPI active?
- Yes — Jeffrey Williams's NPI (1942304977) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.