WEBSTER SURGERY CENTER SAN FRANCISCO
NPI 1659818003
Clinic/Center - Ambulatory Surgical in San Francisco, CA
NPI Status: Active since January 24, 2017
Contact Information
450 SUTTER ST - SUITE 400
SAN FRANCISCO, CA
ZIP 94108
Phone: (415) 393-9600
Fax: (415) 393-9633
- Organization
- Clinic/Center
- Ambulatory Surgical
- CLIA Number: 05D2213716
- CLIA Cert. Type: Ambulatory Surgery Center
- CLIA Exp. Date: 11-30-2027
About WEBSTER SURGERY CENTER SAN FRANCISCO
This page provides the complete NPI Profile along with additional information for Webster Surgery Center San Francisco, a provider established in San Francisco, California operating as a Clinic/center, focusing in ambulatory surgical . The healthcare provider is registered in the NPI registry with number 1659818003 assigned on January 2017. The practitioner's primary taxonomy code is 261QA1903X. The provider is registered as an organization and their NPI record was last updated 6 years ago. The provider's other name is Webster Surgery Center San Francisco. The authorized official of this NPI record is Dr. James L Chen Md (Managing Partner)
- NPI
- 1659818003
- Provider Legal Name
- WEBSTER SURGERY CENTER SAN FRANCISCO, LP
- Other Organization Name
- WEBSTER SURGERY CENTER SAN FRANCISCO
- Other Name Type
- Other Name (5)
- Entity Type
- Organization
- Location Address
- 450 SUTTER ST - SUITE 400 SAN FRANCISCO, CA 94108
- Location Phone
- (415) 393-9600
- Location Fax
- (415) 393-9633
- Mailing Address
- 450 SUTTER STREET - SUITE 400 SAN FRANCISCO, CA 94108
- Mailing Phone
- (510) 451-1875
- Mailing Fax
- (415) 393-9633
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 01-24-2017
- Last Update Date
- 09-14-2020
- 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 Ambulatory Surgical
- Taxonomy Code
- 261QA1903X
- Type
- Ambulatory Health Care Facilities
- 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
- 05D2213716
- Facility Type
- Ambulatory Surgery Center
- Certificate Effective Date
- December 01, 2025
- Certificate Expiration Date
- November 30, 2027
- Laboratory Director
- JAMES CHEN
- Certificate Type
- Certificate for Provider-Performed Microscopy Procedures (PPMP)
- Certificate Type Description
- This CLIA certificate is issued to Webster Surgery Center San Francisco 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 1659818003, 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 1659818003, enumerated as an "organization" on January 24, 2017.
The provider is located at 450 SUTTER ST - SUITE 400 SAN FRANCISCO, CA 94108 and the phone number is (415) 393-9600.
Clinic/Center with taxonomy code 261QA1903X and a focus in Ambulatory Surgical.
