DAVID ASHLEY, M.D., P.C.
NPI 1053278713
Dietitian, Registered - Nutrition, Obesity and Weight Management in San Francisco, CA
NPI Status: Active since January 06, 2026
Contact Information
595 PACIFIC AVE FL 4
SAN FRANCISCO, CA
ZIP 94133
Phone: (415) 800-2311
- Organization
- Dietitian, Registered
- Nutrition, Obesity and Weight Management
About DAVID ASHLEY, M.D., P.C.
This page provides the complete NPI Profile along with additional information for David Ashley, M.d., P.c., a provider established in San Francisco, California operating as a Dietitian, Registered, focusing in nutrition, obesity and weight management . The healthcare provider is registered in the NPI registry with number 1053278713 assigned on January 2026. The practitioner's primary taxonomy code is 133VN1201X. The provider is registered as an organization and their NPI record was last updated January 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. David Ashley Md (Owner)
- NPI
- 1053278713
- Provider Name
- DAVID ASHLEY, M.D., P.C.
- Entity Type
- Organization
- Location Address
- 595 PACIFIC AVE FL 4 SAN FRANCISCO, CA 94133
- Location Phone
- (415) 800-2311
- Mailing Address
- 2041 EAST ST PMB 1292 CONCORD, CA 94520
- Mailing Phone
- (415) 800-2311
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 01-06-2026
- Last Update Date
- 01-06-2026
- 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
Dietitian, Registered Nutrition, Obesity and Weight Management
- Taxonomy Code
- 133VN1201X
- Type
- Dietary & Nutritional Service Providers
- Taxonomy Description
- An individual who is a Board Certified Specialist for Obesity and Weight Management and educates, supports, and advocates for patients and clients to understand and manage their weight and associated risks through the use of nutritional, behavioral health, medical, surgical, pharmacotherapeutic, and exercise and physical activity interventions.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
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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 1053278713, 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.
Other Providers at the Same Location
The following 11 providers are registered at the same or a nearby location.
SAN FRANCISCO, CA 94133
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1053278713, enumerated as an "organization" on January 06, 2026.
The provider is located at 595 PACIFIC AVE FL 4 SAN FRANCISCO, CA 94133 and the phone number is (415) 800-2311.
Dietitian, Registered with taxonomy code 133VN1201X and a focus in Nutrition, Obesity and Weight Management.
