IndividualActive
Peter Williams, R.D.
NPI 1225225907 · Registered Dietitian · San Diego, CA
Peter Williams, R.D. is a Registered Dietitian provider in San Diego, CA (NPI 1225225907).
Provider details
- NPI number
- 1225225907
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- R.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 963623 (DC)
Specialties & taxonomies
Dietary & Nutritional 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
4647 Zion Ave
San Diego, CA 92120-2507
Phone: (619) 528-5515
Fax: (619) 528-3024
Street-level locationGet directions
Mailing address
3980 Ingraham St Apt D
San Diego, CA 92109-5943
Registry dates
- Enumerated
- 2007-09-26
- Last updated
- 2007-09-26
Frequently asked questions
- What is Peter Williams's NPI number?
- Peter Williams's National Provider Identifier (NPI) is 1225225907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Williams's specialty?
- Peter Williams is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Peter Williams located?
- Peter Williams's practice location on file with NPPES is 4647 Zion Ave, San Diego, CA 92120-2507.
- What is Peter Williams's phone number?
- The practice phone number listed in the NPPES registry for Peter Williams is (619) 528-5515.
- Is Peter Williams's NPI active?
- Yes — Peter Williams's NPI (1225225907) is active in the NPPES registry as of the last update on 2007-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.