CAROLYN C CHANG MD, A PROF. CORP.
NPI 1154533115
Clinic/Center in San Francisco, CA
NPI Status: Active since May 03, 2007
Contact Information
2100 WEBSTER ST
SUITE 506
SAN FRANCISCO, CA
ZIP 94115
Phone: (415) 923-3067
Fax: (415) 346-5019
- Organization
- Clinic/Center
About CAROLYN C CHANG MD, A PROF. CORP.
This page provides the complete NPI Profile along with additional information for Carolyn C Chang Md, A Prof. Corp., a provider established in San Francisco, California operating as a Clinic/center. The healthcare provider is registered in the NPI registry with number 1154533115 assigned on May 2007. The practitioner's primary taxonomy code is 261Q00000X with license number A054546 (CA). The provider is registered as an organization and their NPI record was last updated 6 years ago. The authorized official of this NPI record is Dr. Carolyn Chieng-lin Chang M.d. (Ceo)
- NPI
- 1154533115
- Provider Name
- CAROLYN C CHANG MD, A PROF. CORP.
- Entity Type
- Organization
- Location Address
- 2100 WEBSTER ST SUITE 506 SAN FRANCISCO, CA 94115
- Location Phone
- (415) 923-3067
- Location Fax
- (415) 346-5019
- Mailing Address
- 2100 WEBSTER ST SUITE 506 SAN FRANCISCO, CA 94115
- Mailing Phone
- (415) 923-3067
- Mailing Fax
- (415) 346-5019
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-03-2007
- Last Update Date
- 08-22-2020
- 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
- Taxonomy Code
- 261Q00000X
- Type
- Ambulatory Health Care Facilities
- License No.
- A054546
- License State
- CA
- Taxonomy Description
- A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).
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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 1154533115, we treat the final digit (5) 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 45. The final step is to find the difference between that total and the next multiple of ten (50 - 45 = 5).
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 45 is 50. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1154533115, enumerated as an "organization" on May 03, 2007.
The provider is located at 2100 WEBSTER ST SUITE 506 SAN FRANCISCO, CA 94115 and the phone number is (415) 923-3067.
Clinic/Center with taxonomy code 261Q00000X.
