Dr. Mark A. Johnston graduated from the University of Texas Southwestern Medical Center at Dallas in 1984. He works in Dallas, TX and specializes in Internal Medicine and Public Health & General Preventive Medicine. Dr. Johnston is affiliated with USMD Hospital At Arlington, USMD Hospital At Fort Worth and Texas Health Presbyterian Hospital Dallas. He speaks English, Spanish and Vietnamese.
Years in Practice: 30 Years
Languages Spoken: English, Spanish, Vietnamese
Medical School: University of Texas Southwestern Medical Center at Dallas
Graduation Date: 1984
Specialties: Internal Medicine, Public Health & General Preventive Medicine