IndividualActive
William Mahaffey, M.D.
NPI 1013916055 · Surgery Physician · Leonardtown, MD
William Mahaffey, M.D. is a Surgery Physician provider in Leonardtown, MD (NPI 1013916055).
Provider details
- NPI number
- 1013916055
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0047443 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
25480 Point Lookout Rd
Leonardtown, MD 20650-3801
Phone: (301) 997-0909
Fax: (301) 997-0919
Street-level locationGet directions
Mailing address
25480 Point Lookout Rd
Leonardtown, MD 20650-3801
Registry dates
- Enumerated
- 2005-07-20
- Last updated
- 2010-06-23
Frequently asked questions
- What is William Mahaffey's NPI number?
- William Mahaffey's National Provider Identifier (NPI) is 1013916055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mahaffey's specialty?
- William Mahaffey is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Mahaffey located?
- William Mahaffey's practice location on file with NPPES is 25480 Point Lookout Rd, Leonardtown, MD 20650-3801.
- What is William Mahaffey's phone number?
- The practice phone number listed in the NPPES registry for William Mahaffey is (301) 997-0909.
- Is William Mahaffey's NPI active?
- Yes — William Mahaffey's NPI (1013916055) is active in the NPPES registry as of the last update on 2010-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.