DR. WAYNE E ANDERSON DO
NPI 1679559421
Psychiatry & Neurology - Neurology in San Francisco, CA
NPI Status: Active since December 22, 2005
Contact Information
45 CASTRO ST
SUITE 225
SAN FRANCISCO, CA
ZIP 94114
Phone: (415) 558-8584
Fax: (415) 513-4521
- Individual
- Male
- Psychiatry & Neurology
- Neurology
About WAYNE ANDERSON
This page provides the complete NPI Profile along with additional information for Wayne Anderson, a provider established in San Francisco, California with a medical specialization in Psychiatry & Neurology, focusing in neurology . The healthcare provider is registered in the NPI registry with number 1679559421 assigned on December 2005. The practitioner's primary taxonomy code is 2084N0400X with license number 20A6596 (CA). The provider is registered as an individual and his NPI record was last updated February 2026.
- NPI
- 1679559421
- Provider Name
- DR. WAYNE E ANDERSON DO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 45 CASTRO ST SUITE 225 SAN FRANCISCO, CA 94114
- Location Phone
- (415) 558-8584
- Location Fax
- (415) 513-4521
- Mailing Address
- 45 CASTRO ST SUITE 225 SAN FRANCISCO, CA 94114
- Mailing Phone
- (415) 558-8584
- Mailing Fax
- (415) 513-4521
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-22-2005
- Last Update Date
- 02-12-2026
- 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
Psychiatry & Neurology Neurology
- Taxonomy Code
- 2084N0400X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 20A6596
- License State
- CA
- Taxonomy Description
- A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 2084P2900X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | 20A6596 (CA) |
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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 1679559421, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).
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 69 is 70. 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 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
SAN FRANCISCO, CA 94114
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1679559421, enumerated as an "individual" on December 22, 2005.
The provider is located at 45 CASTRO ST SUITE 225 SAN FRANCISCO, CA 94114 and the phone number is (415) 558-8584.
Psychiatry & Neurology with taxonomy code 2084N0400X and a focus in Neurology.
