Saturday February 17th 2018
997 Hampshire Lane
Richardson, TX 75080-8105

Dallas Internist

Doctor of Internal Medicine – Alfred R. Johnson, D.O.

Alfred R. Johnson, D.O., is a doctor of internal medicine and women’s health (bio-identical hormones) with a special interest in the area of chronic illness, allergy and environmental medicine. He is currently in private practice at Johnson Medical Associates – Richardson, Texas and has served a six-year term on the Texas State Board of Medical Examiners, the 15-member governing body for physicians in the state.

A fellow, former board member, and Instructional Course Director of the American Academy of Environmental Medicine, Dr. Johnson is also a member of the American college of Osteopathic Internists, the Joint Council of Allergy and Immunology, Pan American Allergy Society (and a former board member), the American Osteopathic Association and the Texas Osteopathic Association, in which he formerly served as vice president of the Dallas chapter. He also holds memberships in the American Public Health Association, the American College of Allergists, and the American college of Allergy and Immunology. He is a fellow of the American Academy of Disability Evaluating Physicians.

A graduate of William Jewell College in Liberty, Missouri, at which he was honored as Outstanding Alumnus in 1993, Dr. Johnson received his Doctor of Osteopathic Medicine at the University of Health Sciences Center in Kansas City, Missouri. He then completed a rotating internship at Oklahoma Osteopathic Hospital in Tulsa, Oklahoma, followed by an internal medicine residency at Southeastern Medical Center in North Miami Beach, Florida, during which time he also served as chief resident at Osteopathic General Hospital. He became affiliated with the Environmental Health Center – Dallas in 1980.

Dr. Johnson currently holds licenses to practice medicine in Texas, Missouri, Oklahoma and Florida, and Illinois. He has published numerous research studies, which include topics related to immune system function as well as those examining the health effects of environmental factors on the human body. He has also addressed many national and international medical conferences regarding his research.


  • Fellow of the American Academy of Environmental Medicine (F.A.A.E.M.)
  • Fellow of the American Academy of Disability Physicians (F.A.A.D.P.)
  • Board Certification Eligible in Internal Medicine
  • Texas State Board of Medical Examiners (1987-1992)

To learn more about Dr. Johnson, contact our medical clinic at 972-479-0400.