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

Dr. Andrew Keenan, MD

Individual provider Internal Medicine Physician · NPI 1467405175

Dr. Andrew Keenan, MD is a Nuclear Medicine in Largo, Maryland. Graduated from George Washington University School of Medicine in 1976, 50 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
50
Trained at
George Washington University School of Medicine
Licensed in
MD
In the registry since
2006
Specialties on file
3
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

901 Harry S Truman Dr N
Largo, MD 20774-5477
Phone: (301) 677-2149
Show map & directions

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

Specialties & licences

Nuclear Imaging & Therapy Physician (primary) Taxonomy 207UN0902X · Licence D0026012 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0026012 (MD)
In Vivo & In Vitro Nuclear Medicine Physician Taxonomy 207UN0903X · Licence D0026012 (MD)

Record details

NPI number1467405175
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 17, 2006
Last updated in NPPESJune 23, 2022
Certification dateJune 23, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNUCLEAR MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1976 (50 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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