Calvin Williams
Social Worker · Seattle, WA
Calvin Williams is a social worker with a practice address in Seattle, Washington, and NPI 1265350995, issued on Jul 9, 2026. Check the license (Washington SWIA.SC.70134673, as entered in NPPES) with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Calvin Williams
- Primary taxonomy
- Social Worker 104100000X
- License number
- SWIA.SC.70134673 WA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N 34TH St Ste 320, Seattle, WA 98103
- Phone
- (206) 385-7864
- Enumerated
- Jul 9, 2026
- Record last updated
- Jul 9, 2026
- Entity
- Type 1 · individual
8 nearest social worker records → All 2,141 in Washington → Look up another NPI →
Also registered at 400 N 34TH St Ste 320
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Riley EvansMental Health Counselor1437076395
- Katherine HamiltonSocial Worker1821989468
- Dominique Savage, B.A, M.A.Mental Health Counselor1104420678
- Carmen ValenzuelaSocial Worker1225929888
- Wesley Weidle, PA-CPhysician Assistant1689182529
Verify Calvin Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license SWIA.SC.70134673Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Calvin Williams among 2,141 social worker records in Washington
Calvin Williams is one of 2,141 social worker records with a practice address in Washington. 5% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2026, is newer than 96% of them.
- NPI issued2026 · 96% of these records are older, 0% newer
- In a Medicare fileNo · 5% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2026 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
468 social worker records list a practice address in Seattle
They are 468 of the 41,956 NPPES records with a practice address in Seattle, and 2,141 social worker records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,141 in Washington → Every provider in Seattle → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Maureen BurnsSeattle, WA 981031477343036
- Elizabeth Darlington, LICSWSeattle, WA 981031295210565
- Katherine HamiltonSeattle, WA 981031821989468
- Holly Hodgson, LMSWSeattle, WA 981031508684580
- Sara Hood, LMSWSeattle, WA 981031073345302
- Nafessa Kassim, MSWSeattle, WA 981031740159433
- Michal KeidarSeattle, WA 981031679927735
- Jane Poisson, LICSWSeattle, WA 981031114037140
Common questions
What is Calvin Williams's NPI number?
Calvin Williams's National Provider Identifier (NPI) is 1265350995, issued on Jul 9, 2026. An NPI identifies a provider in billing; it is not a license.
Where is Calvin Williams located?
The NPPES record lists a practice address at 400 N 34TH St Ste 320, Seattle, WA, 98103. Phone: (206) 385-7864. Providers update this record themselves, so call before visiting.
How can I verify Calvin Williams's license?
NPPES lists Washington license number SWIA.SC.70134673, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.