William Leahy, M.D.
NPI 1164439550 · Neurology with Special Qualifications in Child Neurology Physician · Greenbelt, MD
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Leahy, M.D. is a Neurology with Special Qualifications in Child Neurology Physician provider in Greenbelt, MD (NPI 1164439550).
Provider details
- NPI number
- 1164439550
- Entity type
- Individual
- Primary specialty
- Neurology with Special Qualifications in Child Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D15593 (MD)
Specialties & taxonomies
- Neurology with Special Qualifications in Child Neurology PhysicianPrimary2084N0402XLicense D0015593 (MD)
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
19 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
- 2006-08-01
- Last updated
- 2022-10-11
- Certified
- 2022-10-11
Frequently asked questions
- What is William Leahy's NPI number?
- William Leahy's National Provider Identifier (NPI) is 1164439550, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Leahy's specialty?
- William Leahy is listed in the NPPES registry with a primary specialty of Neurology with Special Qualifications in Child Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is William Leahy located?
- William Leahy's practice location on file with NPPES is 7500 Hanover Pkwy, Greenbelt, MD 20770-2010.
- What is William Leahy's phone number?
- The practice phone number listed in the NPPES registry for William Leahy is (301) 982-7944.
- Does William Leahy accept Medicare?
- William Leahy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Leahy's NPI active?
- Yes — William Leahy's NPI (1164439550) is active in the NPPES registry as of the last update on 2022-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.