Andrew Williamson
NPI 1073070454 · Adult Companion · Santa Cruz, CA
Andrew Williamson is a Adult Companion provider in Santa Cruz, CA (NPI 1073070454).
Provider details
- NPI number
- 1073070454
- Entity type
- Individual
- Primary specialty
- Adult CompanionNursing Service Related Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Nursing Service Related Providers
- Mental Health Counselor101YM0800X
Behavioral Health & Social Service Providers
- Community Health Worker172V00000X
Other 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
- 2019-02-21
- Last updated
- 2025-04-17
- Certified
- 2025-04-17
Frequently asked questions
- What is Andrew Williamson's NPI number?
- Andrew Williamson's National Provider Identifier (NPI) is 1073070454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Williamson's specialty?
- Andrew Williamson is listed in the NPPES registry with a primary specialty of Adult Companion (Nursing Service Related Providers).
- Where is Andrew Williamson located?
- Andrew Williamson's practice location on file with NPPES is 380 Encinal St, Santa Cruz, CA 95060-2178.
- What is Andrew Williamson's phone number?
- The practice phone number listed in the NPPES registry for Andrew Williamson is (831) 226-3909.
- Is Andrew Williamson's NPI active?
- Yes — Andrew Williamson's NPI (1073070454) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.