William Gahl, M.D.
NPI 1992948582 · Clinical Biochemical Genetics Physician · Bethesda, MD
William Gahl, M.D. is a Clinical Biochemical Genetics Physician provider in Bethesda, MD (NPI 1992948582).
Provider details
- NPI number
- 1992948582
- Entity type
- Individual
- Primary specialty
- Clinical Biochemical Genetics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 20993-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-12
- Last updated
- 2009-04-12
Frequently asked questions
- What is William Gahl's NPI number?
- William Gahl's National Provider Identifier (NPI) is 1992948582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Gahl's specialty?
- William Gahl is listed in the NPPES registry with a primary specialty of Clinical Biochemical Genetics Physician (Allopathic & Osteopathic Physicians).
- Where is William Gahl located?
- William Gahl's practice location on file with NPPES is 10 Center Drive Msc 1851, Bethesda, MD 20892-0001.
- What is William Gahl's phone number?
- The practice phone number listed in the NPPES registry for William Gahl is (301) 402-2739.
- Is William Gahl's NPI active?
- Yes — William Gahl's NPI (1992948582) is active in the NPPES registry as of the last update on 2009-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.