COUNTY OF SAN MATEO
NPI 1922153451
Clinic/Center - Multi-Specialty in Daly City, CA

NPI Status: Active since January 24, 2007

Contact Information

2780 JUNIPERO SERRA BLVD
DALY CITY, CA
ZIP 94015
Phone: (650) 985-7000

NPI Profile Information
Primary Taxonomy
Insurance Plans Accepted
Authorized Official
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Organization
Clinic/Center
Multi-Specialty

About COUNTY OF SAN MATEO

This page provides the complete NPI Profile along with additional information for County Of San Mateo, a provider established in Daly City, California operating as a Clinic/center, focusing in multi-specialty . The healthcare provider is registered in the NPI registry with number 1922153451 assigned on January 2007. The practitioner's primary taxonomy code is 261QM1300X. The provider is registered as an organization and their NPI record was last updated one year ago. The provider's . The authorized official of this NPI record is Jennifer Papa (Chief Financial Officer)

NPI: 1922153451
Provider Legal Name: COUNTY OF SAN MATEO
Other Organization Name
Other Name Type: (6)
Entity Type: Organization
Location Address: 2780 JUNIPERO SERRA BLVD DALY CITY, CA 94015
Location Phone: (650) 985-7000
Mailing Address: 222 W 39TH AVE SAN MATEO, CA 94403
Mailing Phone: (650) 573-2222
Is Sole Proprietor?: No
Is Organization Subpart?: Yes
Enumeration Date: 01-24-2007
Last Update Date: 10-23-2025
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Clinic/Center Multi-Specialty
Taxonomy Code: 261QM1300X
Type: Ambulatory Health Care Facilities

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Medicare

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Medicaid

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name: JENNIFER PAPA
Authorized Official Title: CHIEF FINANCIAL OFFICER
Authorized Official Phone: (650) 573-2613

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier	Type / Code	Identifier State	Identifier Issuer
GR0028872	MEDICAID (05)	CA

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1922153451, we treat the final digit (1) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 4

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 2 → 4 1 → 2 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 9 + 4 + 2 + 2 + 5 + 6 + 4 + 1 + 0 + 24 = 59

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1922153451.