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

Michael Aaron Gnatt, MD

Individual provider Internal Medicine Physician · NPI 1255392866

Michael Aaron Gnatt, MD is an Internal Medicine Physician in Rockville, Maryland. Licensed in Maryland and New York. Registered with an NPI since 2006.

Licensed in
MD, NY
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

14955 Shady Grove Rd Ste 100
Rockville, MD 20850-8700 Not confirmed with CMS for 13 years — call before visiting
Phone: (301) 990-3193
Fax: (301) 990-3199
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D0066915 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence 204857 (NY)

Record details

NPI number1255392866
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2006
Last updated in NPPESMay 9, 2013

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients68
Services billed 302 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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