Donald Williams
NPI 1073001210 · Addiction (Substance Use Disorder) Counselor · San Marcos, CA
Donald Williams is a Addiction (Substance Use Disorder) Counselor provider in San Marcos, CA (NPI 1073001210).
Provider details
- NPI number
- 1073001210
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- AO22580316 (CA)
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
8 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
- 2018-04-24
- Last updated
- 2018-04-24
Frequently asked questions
- What is Donald Williams's NPI number?
- Donald Williams's National Provider Identifier (NPI) is 1073001210, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Williams's specialty?
- Donald Williams is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Donald Williams located?
- Donald Williams's practice location on file with NPPES is 1560 Capalina Rd, San Marcos, CA 92069-1288.
- What is Donald Williams's phone number?
- The practice phone number listed in the NPPES registry for Donald Williams is (760) 744-2104.
- Is Donald Williams's NPI active?
- Yes — Donald Williams's NPI (1073001210) is active in the NPPES registry as of the last update on 2018-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.