DR. WILLIAM ALLEN GAHL M.D.
NPI 1992948582
Medical Genetics - Clinical Biochemical Genetics in Bethesda, MD
NPI Status: Active since April 12, 2009
Contact Information
10 CENTER DRIVE MSC 1851
BLDG. 10, ROOM 10C-103, NHGRI, NIH
BETHESDA, MD
ZIP 20892
Phone: (301) 402-2739
Fax: (301) 402-2740
- Individual
- Male
- Medical Genetics
- Clinical Biochemical Genetics
About WILLIAM GAHL
This page provides the complete NPI Profile along with additional information for William Gahl, a provider established in Bethesda, Maryland with a medical specialization in Medical Genetics, focusing in clinical biochemical genetics . The healthcare provider is registered in the NPI registry with number 1992948582 assigned on April 2009. The practitioner's primary taxonomy code is 207SG0202X with license number 20993-020 (WI). The provider is registered as an individual and his NPI record was last updated 17 years ago.
- NPI
- 1992948582
- Provider Name
- DR. WILLIAM ALLEN GAHL M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 10 CENTER DRIVE MSC 1851 BLDG. 10, ROOM 10C-103, NHGRI, NIH BETHESDA, MD 20892
- Location Phone
- (301) 402-2739
- Location Fax
- (301) 402-2740
- Mailing Address
- 10 CENTER DRIVE MSC 1851 BLDG. 10, ROOM 10C-103, NHGRI, NIH BETHESDA, MD 20892
- Mailing Phone
- (301) 402-2739
- Mailing Fax
- (301) 402-2740
- Is Sole Proprietor?
- No
- Enumeration Date
- 04-12-2009
- Last Update Date
- 04-12-2009
- 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
Medical Genetics Clinical Biochemical Genetics
- Taxonomy Code
- 207SG0202X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 20993-020
- License State
- WI
- Taxonomy Description
- A clinical biochemical geneticist demonstrates competence in performing and interpreting biochemical analyses relevant to the diagnosis and management of human genetic diseases and is a consultant regarding laboratory diagnosis of a broad range of inherited disorders.
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 | 207SG0201X | Allopathic & Osteopathic Physicians | Medical Genetics | 20993-020 (WI) |
| 2 | 208000000X | Allopathic & Osteopathic Physicians | Pediatrics | 20993-020 (WI) |
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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 1992948582, 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 78. The final step is to find the difference between that total and the next multiple of ten (80 - 78 = 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.
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 78 is 80. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1992948582, enumerated as an "individual" on April 12, 2009.
The provider is located at 10 CENTER DRIVE MSC 1851 BLDG. 10, ROOM 10C-103, NHGRI, NIH BETHESDA, MD 20892 and the phone number is (301) 402-2739.
Medical Genetics with taxonomy code 207SG0202X and a focus in Clinical Biochemical Genetics.
