MR. SEAN P DONNELLY PEER SUPPORT SPECIAL
NPI 1255229530
Counselor - Addiction (Substance Use Disorder) in San Mateo, CA
Active since June 25, 2025
About Mr. Sean P Donnelly Peer Support Special NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. SEAN P DONNELLY PEER SUPPORT SPECIAL (NPI 1255229530) is an individual addiction (substance use disorder) provider in San Mateo, California, licensed in California (SUDRCI25906) and active in the NPI registry since June 2025.
NPPES Registry Identity
NPI1255229530
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. SEAN P DONNELLYCredential: PEER SUPPORT SPECIAL
Location Address416 2ND AVESan Mateo, CA 94401-3205
Mailing Address114 S Delaware StSan Mateo, CA 94401-3222 · (650) 579-7881
Phone(650) 579-7881
Sole ProprietorNo
Enumeration DateJune 25, 2025
Last NPPES UpdateJune 17, 2026
NPPES CertifiedJune 17, 2026
✔ NPI 1255229530 is a valid, active identifier and passes the ISO check-digit test.
Specialties & Licenses 2
★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in CA · SUDRCI25906
Also ListedPeer SpecialistTaxonomy 175T00000X · License MPSS-MKGVZO (CA)
416 2ND AVE, San Mateo, CA 94401
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Counselor (Addiction (Substance Use Disorder))
416 2ND AVE
SAN MATEO, CA 94401
SAN MATEO, CA 94401
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1255229530, enumerated as an "individual" on June 25, 2025.
The provider is located at 416 2ND AVE SAN MATEO, CA 94401 and the phone number is (650) 579-7881.
Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).
