CITY & COUNTY OF SAN FRANCISCO
NPI 1982737524
Clinical Medical Laboratory in San Francisco, CA

Active since March 13, 2007
101 GROVE ST, ROOM 419, SAN FRANCISCO, CA 94102(415) 554-2800(415) 431-0651 Get Directions Write a Review

NPPES record last updated: July 1, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 1, 2025, Aug 18, 2023 (2 updates tracked since 2023).

About City & County Of San Francisco NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CITY & COUNTY OF SAN FRANCISCO (NPI 1982737524), doing business as San Francisco Public Health Laboratory, is a healthcare organization registered as a clinical medical laboratory in San Francisco, California and active in the NPI registry since March 2007. The organization lists Timothy Arnold, Deputy Director, Pfs, as its authorized official.

NPPES Registry Identity

NPI1982737524
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameCITY & COUNTY OF SAN FRANCISCO
Location Address101 GROVE ST, ROOM 419San Francisco, CA 94102-4505
Mailing Address101 Grove St, Room 419San Francisco, CA 94102-4505 · (415) 554-2800 · Fax (415) 431-0651
Fax(415) 431-0651
Organization SubpartNo
Authorized OfficialTimothy ArnoldDeputy Director, Pfs · (415) 759-3351
Enumeration DateMarch 13, 2007
Last NPPES UpdateJuly 1, 20252 updates tracked since enumeration
NPPES CertifiedJuly 1, 2025
✔ NPI 1982737524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
License✔ Licensed in CA · 1241
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
101 GROVE ST, San Francisco, CA 94102

Other Names 1

Doing Business AsSan Francisco Public Health Laboratory

Other Identifiers 1

MedicaidLAB01241CA

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

City & County Of San Francisco is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

1,561

Medicare enrollment records show 1,561 clinicians reassign Medicare billing to City & County Of San Francisco, which bills Medicare for the services they deliver. Of these, 8 practice at this address and 1,205 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 58

Nurse Practitioner232
Internal Medicine192
Family Practice136
Psychiatry126
Clinical Social Worker71
Diagnostic Radiology71
Pediatric Medicine64
Ophthalmology54
50 other specialties615

Nearest to this location (20)

See all 1,561
Psychiatry
NPI 1154828358
101 GROVE ST
San Francisco, CA 94102
(415) 554-2500
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1598892580
50 LECH WALESA TOM WADDELL
San Francisco, CA 94102
(415) 355-7540
✔ PECOSSame address
Internal Medicine
NPI 1326165796
50 LECH WALESA TOM WADDELL
San Francisco, CA 94102
(415) 355-7425
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1386791416
50 LECH WALESA TOM WADDELL HEALTH CENTER
San Francisco, CA 94102
(415) 355-7493
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1104921691
50 LECH WALESA
San Francisco, CA 94102
(415) 355-7475
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1508938887
50 LECH WALESA
San Francisco, CA 94102
(415) 355-7400
✔ PECOSSame address
Clinical Social Worker
NPI 1720661457
50 IVY ST
San Francisco, CA 94102
(415) 810-0463
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1417304825
50 IVY ST
San Francisco, CA 94102
(415) 355-7555
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1396764999
50 LECH WALESA TOM WADDELL HEALTH CENTER
San Francisco, CA 94102
(415) 355-7400
✔ PECOS0.1 mi
Internal Medicine
NPI 1225787849
PO BOX 410096
San Francisco, CA 94141
(415) 353-9111
✔ PECOS✔ Accepts Medicare0.1 mi
Psychiatry
NPI 1770525370
90 VAN NESS AVE
San Francisco, CA 94102
(415) 558-5900
✔ PECOS✔ Accepts Medicare0.1 mi
Marriage and Family Therapist
NPI 1568070431
1360 MISSION ST FL 2
San Francisco, CA 94103
(628) 217-7767
✔ PECOS0.2 mi
Clinical Social Worker
NPI 1740856459
1263 MISSION ST
San Francisco, CA 94103
(510) 882-4963
✔ PECOS0.3 mi
Podiatry
NPI 1275987653
1145 MARKET ST
San Francisco, CA 94103
(415) 554-2500
✔ PECOS✔ Accepts Medicare0.3 mi
Family Practice
NPI 1861842809
1171 MISSION ST
San Francisco, CA 94103
(628) 754-9616
✔ PECOS✔ Accepts Medicare0.3 mi
Diagnostic Radiology
NPI 1669009221
1101 VAN NESS AVE FL 3
San Francisco, CA 94109
(415) 600-3232
✔ PECOS✔ Accepts Medicare0.6 mi
Infectious Disease
NPI 1497863146
356 7TH ST
San Francisco, CA 94103
(628) 217-6600
✔ PECOS✔ Accepts Medicare0.6 mi
Clinical Psychologist
NPI 1285708024
870 MARKET ST SUITE 744
San Francisco, CA 94102
(415) 857-1157
✔ PECOS0.8 mi
Hospitalist
NPI 1144301722
900 HYDE ST
San Francisco, CA 94109
(415) 353-6000
✔ PECOS✔ Accepts Medicare0.8 mi
Otolaryngology
NPI 1922234285
450 SUTTER ST RM 933
San Francisco, CA 94108
(415) 362-5443
✔ PECOS✔ Accepts Medicare1.0 mi
See all 1,561 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is City & County Of San Francisco's NPI number?

The NPI number for City & County Of San Francisco is 1982737524. It was assigned to this organization in the NPPES registry on March 13, 2007. The provider is doing business as San Francisco Public Health Laboratory.

Where is City & County Of San Francisco located?

City & County Of San Francisco is located at 101 Grove St Room 419, San Francisco, CA 94102. The listed phone number is (415) 554-2800.

What is City & County Of San Francisco's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Is City & County Of San Francisco enrolled in Medicare?

Yes. City & County Of San Francisco is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through City & County Of San Francisco?

According to the CMS Revalidation Reassignment List (October 2026 release), 1,561 clinicians in 58 Medicare specialties reassign their Medicare billing to City & County Of San Francisco. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (232), Internal Medicine (192) and Family Practice (136). Of these, 8 practice at this address and 1,205 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for City & County Of San Francisco was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.