KATHRYN J CLARK
NPI 1154349769
Obstetrics & Gynecology in San Francisco, CA

NPI Status: Active since July 18, 2006

Contact Information

3838 CALIFORNIA ST
SUITE 510
SAN FRANCISCO, CA
ZIP 94118
Phone: (415) 668-1560

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  • Individual
  • Female
  • Obstetrics & Gynecology

About KATHRYN CLARK

This page provides the complete NPI Profile along with additional information for Kathryn Clark, a women's health care provider established in San Francisco, California with a medical specialization in Obstetrics & Gynecology. The healthcare provider is registered in the NPI registry with number 1154349769 assigned on July 2006. The practitioner's primary taxonomy code is 207V00000X with license number G46453 (CA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1154349769
Provider Name
KATHRYN J CLARK
Gender
Female
Entity Type
Individual
Location Address
3838 CALIFORNIA ST SUITE 510 SAN FRANCISCO, CA 94118
Location Phone
(415) 668-1560
Mailing Address
3838 CALIFORNIA ST SUITE 510 SAN FRANCISCO, CA 94118
Is Sole Proprietor?
No
Enumeration Date
07-18-2006
Last Update Date
07-08-2007
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Women's health care providers like Kathryn Clark treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, etc.

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

Obstetrics & Gynecology

Taxonomy Code
207V00000X
Type
Allopathic & Osteopathic Physicians
License No.
G46453
License State
CA
Taxonomy Description
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

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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 1154349769, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
4
Unchanged
Pos 5
3
Doubled → 6
Pos 6
4
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
9
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 5 → 10 → 1 3 → 6 9 → 18 → 9 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 0 + 4 + 6 + 4 + 1 + 8 + 7 + 1 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1154349769.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Colon & Rectal Surgery
3838 CALIFORNIA ST, RM 616
SAN FRANCISCO, CA 94118
Colon & Rectal Surgery
3838 CALIFORNIA ST, RM 616
SAN FRANCISCO, CA 94118
Colon & Rectal Surgery
3838 CALIFORNIA ST, RM 616
SAN FRANCISCO, CA 94118
Allergy & Immunology (Allergy)
3838 CALIFORNIA ST, RM 108
SAN FRANCISCO, CA 94118
Surgery
3838 CALIFORNIA ST, RM 616
SAN FRANCISCO, CA 94118
Internal Medicine
3838 CALIFORNIA ST, 310
SAN FRANCISCO, CA 94118
Internal Medicine
3838 CALIFORNIA ST, 310
SAN FRANCISCO, CA 94118
Surgery
3838 CALIFORNIA ST, SUITE 610
SAN FRANCISCO, CA 94118
Dermatology
3838 CALIFORNIA ST, SUITE 805
SAN FRANCISCO, CA 94118
Obstetrics & Gynecology
3838 CALIFORNIA ST, STE 408
SAN FRANCISCO, CA 94118
Obstetrics & Gynecology
3838 CALIFORNIA ST, SUITE 510
SAN FRANCISCO, CA 94118
Obstetrics & Gynecology
3838 CALIFORNIA ST, SUIE 510
SAN FRANCISCO, CA 94118
Obstetrics & Gynecology
3838 CALIFORNIA ST, SUITE 510
SAN FRANCISCO, CA 94118
Specialist
3838 CALIFORNIA ST, SUITE #514
SAN FRANCISCO, CA 94118
Podiatrist
3838 CALIFORNIA ST, STE. 601
SAN FRANCISCO, CA 94118
Internal Medicine
3838 CALIFORNIA ST, SUITE 416
SAN FRANCISCO, CA 94118
Internal Medicine
3838 CALIFORNIA ST, SUITE 608
SAN FRANCISCO, CA 94118
Otolaryngology
3838 CALIFORNIA ST, SUITE 505
SAN FRANCISCO, CA 94118
Dermatology
3838 CALIFORNIA ST, SUITE 308
SAN FRANCISCO, CA 94118
Dermatology
3838 CALIFORNIA ST, SUITE 308
SAN FRANCISCO, CA 94118

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1154349769, enumerated as an "individual" on July 18, 2006.

The provider is located at 3838 CALIFORNIA ST SUITE 510 SAN FRANCISCO, CA 94118 and the phone number is (415) 668-1560.

Obstetrics & Gynecology with taxonomy code 207V00000X.