William Carlson, LCSW
NPI 1558843516 · Clinical Social Worker · Stanford, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Carlson, LCSW is a Clinical Social Worker provider in Stanford, CA (NPI 1558843516).
Provider details
- NPI number
- 1558843516
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 114624 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
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
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 1766 Terrace DrBelmont, CA 94002-1757Phone: (707) 338-7184
- 1328 2nd StSanta Monica, CA 90401-1122Phone: (310) 394-6889
Registry dates
- Enumerated
- 2018-09-05
- Last updated
- 2024-11-15
- Certified
- 2024-11-15
Frequently asked questions
- What is William Carlson's NPI number?
- William Carlson's National Provider Identifier (NPI) is 1558843516, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Carlson's specialty?
- William Carlson is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Carlson located?
- William Carlson's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is William Carlson's phone number?
- The practice phone number listed in the NPPES registry for William Carlson is (650) 723-4000.
- Does William Carlson accept Medicare?
- William Carlson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Carlson's NPI active?
- Yes — William Carlson's NPI (1558843516) is active in the NPPES registry as of the last update on 2024-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.