John Williams
NPI 1205312907 · Addiction (Substance Use Disorder) Counselor · Riverside, CA
John Williams is a Addiction (Substance Use Disorder) Counselor provider in Riverside, CA (NPI 1205312907).
Provider details
- NPI number
- 1205312907
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2018-07-16
- Last updated
- 2020-02-05
- Certified
- 2020-02-05
Frequently asked questions
- What is John Williams's NPI number?
- John Williams's National Provider Identifier (NPI) is 1205312907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Williams's specialty?
- John Williams is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is John Williams located?
- John Williams's practice location on file with NPPES is 2743 Orange St, Riverside, CA 92501.
- What is John Williams's phone number?
- The practice phone number listed in the NPPES registry for John Williams is (951) 788-9515.
- Is John Williams's NPI active?
- Yes — John Williams's NPI (1205312907) is active in the NPPES registry as of the last update on 2020-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.