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

Priscilla Ruth Callahan-Lyon, MD

Individual provider Internal Medicine Physician · NPI 1164432423

Priscilla Ruth Callahan-Lyon, MD is an Internal Medicine Physician in Gaithersburg, Maryland. Licensed in Maryland. Registered with an NPI since 2006.

Licensed in
MD
In the registry since
2006
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

7 Metropolitan Ct Ste 1
Gaithersburg, MD 20878-4016
Phone: (240) 773-0307
Fax: (240) 773-0301
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D0041794 (MD)

Record details

NPI number1164432423
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 9, 2006
Last updated in NPPESOctober 29, 2012

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