Shannon Williamson, ASW
NPI 1235294471 · Counselor · San Francisco, CA
Shannon Williamson, ASW is a Counselor provider in San Francisco, CA (NPI 1235294471).
Provider details
- NPI number
- 1235294471
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Credential
- ASW
- Sex
- Male
- Sole proprietor
- No
- License
- 97075 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
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
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
- 2006-12-27
- Last updated
- 2022-01-07
- Certified
- 2022-01-07
Frequently asked questions
- What is Shannon Williamson's NPI number?
- Shannon Williamson's National Provider Identifier (NPI) is 1235294471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shannon Williamson's specialty?
- Shannon Williamson is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is Shannon Williamson located?
- Shannon Williamson's practice location on file with NPPES is 673 San Jose Ave, San Francisco, CA 94110-4914.
- What is Shannon Williamson's phone number?
- The practice phone number listed in the NPPES registry for Shannon Williamson is (415) 282-3789.
- Is Shannon Williamson's NPI active?
- Yes — Shannon Williamson's NPI (1235294471) is active in the NPPES registry as of the last update on 2022-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.