ALEXANDER GENG INC
NPI 1992394811
Radiology - Radiation Oncology in San Francisco, CA
NPI Status: Active since January 14, 2021
Contact Information
900 HYDE ST
SAN FRANCISCO, CA
ZIP 94109
Phone: (415) 353-6420
Fax: (415) 353-6259
- Organization
- Radiology
- Radiation Oncology
About ALEXANDER GENG INC
This page provides the complete NPI Profile along with additional information for Alexander Geng Inc, a provider established in San Francisco, California operating as a Radiology, focusing in radiation oncology . The healthcare provider is registered in the NPI registry with number 1992394811 assigned on January 2021. The practitioner's primary taxonomy code is 2085R0001X. The provider is registered as an organization and their NPI record was last updated 5 years ago. 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 Alexander B Geng Md (Physician/owner)
- NPI
- 1992394811
- Provider Name
- ALEXANDER GENG INC
- Entity Type
- Organization
- Location Address
- 900 HYDE ST SAN FRANCISCO, CA 94109
- Location Phone
- (415) 353-6420
- Location Fax
- (415) 353-6259
- Mailing Address
- 450 GLASS LN STE C MODESTO, CA 95356
- Mailing Phone
- (209) 342-2300
- Mailing Fax
- (415) 353-6259
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 01-14-2021
- Last Update Date
- 01-14-2021
- 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
Radiology Radiation Oncology
- Taxonomy Code
- 2085R0001X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
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 1992394811, 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 79. The final step is to find the difference between that total and the next multiple of ten (80 - 79 = 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 79 is 80. 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 94109
SAN FRANCISCO, CA 94109
SAN FRANCISCO, CA 94109
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1992394811, enumerated as an "organization" on January 14, 2021.
The provider is located at 900 HYDE ST SAN FRANCISCO, CA 94109 and the phone number is (415) 353-6420.
Radiology with taxonomy code 2085R0001X and a focus in Radiation Oncology.
