NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

County of San Mateo

Prison Health Clinic/Center in Redwood City, CA · enumerated 2019 · authorized official Michael Del Rosario, Clinical Services Manager II- Nursi.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1861052060

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name County of San Mateo
Other name <Unavail>
Parent organization County of San Mateo
Practice address 1300 Maple St., Redwood City, CA, 94063
Phone (650) 363-1970
Fax (650) 366-4291
Enumeration date Jun 19, 2019
Last updated in NPPES Oct 16, 2025

Taxonomy & classification

261QP2400X Prison Health Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Michael Del Rosario
Title Clinical Services Manager II- Nursi
Phone (650) 363-7838

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for County of San Mateo?
The NPI for County of San Mateo is 1861052060, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for County of San Mateo?
NPPES lists Michael Del Rosario (Clinical Services Manager II- Nursi) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-16.