Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. William Michael Mahaffey, MD

Individual provider Surgery Physician · NPI 1013916055

Dr. William Michael Mahaffey, MD is a Surgery Physician in Leonardtown, Maryland. Licensed in Maryland. Registered with an NPI since 2005.

Licensed in
MD
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

25480 Point Lookout Rd
Leonardtown, MD 20650-3801
Phone: (301) 997-0909
Fax: (301) 997-0919
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence D0047443 (MD)

Record details

NPI number1013916055
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 20, 2005
Last updated in NPPESJune 23, 2010
Mailing address25480 Point Lookout Rd, Leonardtown, MD 20650-3801

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