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

Dr. Thomas M Masterson, MD

Individual provider Internal Medicine Physician · NPI 1649224643

Dr. Thomas M Masterson, MD is an Internal Medicine in Clinton, Maryland. Graduated from University of Virginia School of Medicine in 1984, 42 years ago. Practices with M Medical Group, Inc, a 107-clinician group and accepts Medicare assignment. Licensed in Maryland and Virginia.

Years since qualifying
42
Trained at
University of Virginia School of Medicine
Licensed in
MD, VA
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.

See every abbreviation used in this directory →

Practice location Address checks out

9106 Pine View Ln
Clinton, MD 20735-3229
Phone: (703) 356-2037
Fax: (703) 734-8987
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 D50534 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101038350 (VA)

Record details

NPI number1649224643
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 22, 2006
Last updated in NPPESSeptember 30, 2017
Mailing address2100 Powell St, Ste 900, Emeryville, CA 94608-1844

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice M Medical Group, Inc. — 107 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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