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

Mark Anthony Johnston, MD

Individual provider Internal Medicine Physician · NPI 1679516116

Mark Anthony Johnston, MD is an Internal Medicine Physician in Dallas, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
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

7515 Greenville Ave Ste 600
Dallas, TX 75231-3831
Phone: (214) 361-5432
Fax: (214) 363-8710
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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 H1380 (TX)

Record details

NPI number1679516116
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2006
Last updated in NPPESJuly 2, 2013

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