KAREN WALKER BRANDRETH O.D.
NPI 1548385412
Optometrist in San Francisco, CA

NPI Status: Active since March 20, 2007

Contact Information

450 SUTTER ST
SUITE 1918
SAN FRANCISCO, CA
ZIP 94108
Phone: (415) 421-8667

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  • Individual
  • Female
  • Optometrist

About KAREN BRANDRETH

This page provides the complete NPI Profile along with additional information for Karen Brandreth, a provider established in San Francisco, California with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1548385412 assigned on March 2007. The practitioner's primary taxonomy code is 152W00000X with license number 4973 (CA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1548385412
Provider Name
KAREN WALKER BRANDRETH O.D.
Gender
Female
Entity Type
Individual
Location Address
450 SUTTER ST SUITE 1918 SAN FRANCISCO, CA 94108
Location Phone
(415) 421-8667
Mailing Address
645 SHADOWHAWK WAY WALNUT CREEK, CA 94595
Mailing Phone
(925) 937-7033
Is Sole Proprietor?
No
Enumeration Date
03-20-2007
Last Update Date
07-08-2007
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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

Optometrist

Taxonomy Code
152W00000X
Type
Eye and Vision Services Providers
License No.
4973
License State
CA
Taxonomy Description
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

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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 1548385412, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

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

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 8 + 8 + 6 + 8 + 1 + 0 + 4 + 2 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1548385412.

Other Providers at the Same Location


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

Dentist (General Practice)
450 SUTTER ST, SUITE 1330
SAN FRANCISCO, CA 94108
Dermatology
450 SUTTER ST, STE 1306
SAN FRANCISCO, CA 94108
Physical Therapist (Orthopedic)
450 SUTTER ST, SUITE 1038
SAN FRANCISCO, CA 94108
Surgery (Surgery of the Hand)
450 SUTTER ST, SUITE 1533
SAN FRANCISCO, CA 94108
Dentist
450 SUTTER ST, SUITE 2340
SAN FRANCISCO, CA 94108
Podiatrist
450 SUTTER ST, #1101
SAN FRANCISCO, CA 94108
Dermatology
450 SUTTER ST, STE 1306
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER ST, SUITE 2130
SAN FRANCISCO, CA 94108
Otolaryngology
450 SUTTER ST, SUITE 933
SAN FRANCISCO, CA 94108
Dentist
450 SUTTER ST, SUITE 2530
SAN FRANCISCO, CA 94108
Dermatology
450 SUTTER ST, SUITE #830
SAN FRANCISCO, CA 94108
Physical Therapist
450 SUTTER ST, SUITE 2640
SAN FRANCISCO, CA 94108
Ophthalmology
450 SUTTER ST, SUITE 1918
SAN FRANCISCO, CA 94108
Dentist (Oral and Maxillofacial Surgery)
450 SUTTER ST, SUITE 2230
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER ST, SUITE 1839
SAN FRANCISCO, CA 94108
Physical Therapist
450 SUTTER ST, SUITE #2640
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER ST, SUITE 1800
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER ST, STE 1819
SAN FRANCISCO, CA 94108
Dentist (Prosthodontics)
450 SUTTER ST, 2600
SAN FRANCISCO, CA 94108
Dentist
450 SUTTER ST, SUITE 2428
SAN FRANCISCO, CA 94108

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1548385412, enumerated as an "individual" on March 20, 2007.

The provider is located at 450 SUTTER ST SUITE 1918 SAN FRANCISCO, CA 94108 and the phone number is (415) 421-8667.

Optometrist with taxonomy code 152W00000X.