COUNTY OF SAN JOAQUIN
NPI 1538400353
Clinic/Center - Multi-Specialty in Stockton, CA
NPI Status: Active since March 04, 2013
Contact Information
1414 N CALIFORNIA STREET SUITE B
STOCKTON, CA
ZIP 95202
Phone: (209) 953-6400
Fax: (209) 468-3977
- Organization
- Clinic/Center
- Multi-Specialty
- CLIA Number: 05D2290960
- CLIA Cert. Type: Federally Qualified Health Center
- CLIA Exp. Date: 10-02-2027
About COUNTY OF SAN JOAQUIN
This page provides the complete NPI Profile along with additional information for County Of San Joaquin, a provider established in Stockton, California operating as a Clinic/center, focusing in multi-specialty . The healthcare provider is registered in the NPI registry with number 1538400353 assigned on March 2013. The practitioner's primary taxonomy code is 261QM1300X with license number 030000087 (CA). The provider is registered as an organization and their NPI record was last updated April 2026. The provider's
- NPI
- 1538400353
- Provider Legal Name
- COUNTY OF SAN JOAQUIN
- Other Organization Name
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 1414 N CALIFORNIA STREET SUITE B STOCKTON, CA 95202
- Location Phone
- (209) 953-6400
- Location Fax
- (209) 468-3977
- Mailing Address
- 10100 TRINITY PKWY STE 100 STOCKTON, CA 95219
- Mailing Phone
- (209) 953-3700
- Mailing Fax
- (209) 468-3977
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- Yes
- Enumeration Date
- 03-04-2013
- Last Update Date
- 04-09-2026
- Code Navigator
Location Map
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
- License No.
- 030000087
- License State
- CA
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 05D2290960
- Facility Type
- Federally Qualified Health Center
- Certificate Effective Date
- October 03, 2025
- Certificate Expiration Date
- October 02, 2027
- Laboratory Director
- JONATHON DIULIO
- Certificate Type
- Certificate for Provider-Performed Microscopy Procedures (PPMP)
- Certificate Type Description
- This CLIA certificate is issued to County Of San Joaquin in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.
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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 1538400353, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 57 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1538400353, enumerated as an "organization" on March 04, 2013.
The provider is located at 1414 N CALIFORNIA STREET SUITE B STOCKTON, CA 95202 and the phone number is (209) 953-6400.
Clinic/Center with taxonomy code 261QM1300X and a focus in Multi-Specialty.
