Johnson Medical Associates Coronavirus/COVID-19 Update

If you need to consult with Dr. Johnson remotely, phone or online video appointments are available.
Please call to make an appointment: (972) 479-0400

Our clinic is currently open and fully operational during our usual business hours. We are taking extra measures to disinfect our clinic and use appropriate social distancing. We have not had any patients diagnosed with COVID-19 at our clinic, and if we suspect someone is infected, we will make arrangements to have them tested and treated away from the clinic to protect our patients and staff.

If you are concerned about exposure when visiting us, please call to let us know you’ve arrived, and stay in your vehicle. When it is time for your appointment, you will be taken directly to the exam room.

If you have symptoms connected to COVID-19 (cough and fever) we are asking patients to not come to the clinic, but instead call the office for instructions: (972) 479-0400

To remain up-to-date on the latest recommendations for your safety, we suggest referring to Dallas County Health and Human Services, the Texas Department of State Health Services, and the Centers for Disease Control. For information that is most relevant to you, please refer to your local health department website.

Information Resources:

Dallas County Health & Human Services:

Texas Department of State Health Services:


We appreciate all your efforts to help keep everyone healthy during this time. If you have any questions or concerns, please reach out to us directly.


Johnson Medical Associates Staff
(972) 479-0400


Through his many years of experience, Dr. Johnson and his staff are uniquely qualified to address particular environmental and chronic health conditions.

Mold Sensitivity & Toxicity
Chronic Fatigue & Autoimmune Conditions
Chronic Gastrointestinal Problems
Toxic Exposure & Chemical Sensitivity
Allergy Testing & Treatment
Hyperbaric Oxygen Therapy
Lyme Disease & Epstein-Barr (EBV)
Hormone Replacement & Women’s Health
Musculoskeletal Osteopathic Evaluation & Treatment
Infective Encephalopathy: Toxic, Viral, Bacterial

Alfred R. Johnson, D.O.


Dr. Johnson is a doctor of internal and environmental medicine with 35+ years experience in the areas of chronic illness, toxic exposures, allergy, and the use of hyperbaric oxygen therapy to address a multitude of conditions.

Genevieve Taylor
Hyperbaric Oxygen Patient

Over the summer, a bicycle injury left me with a major muscle contusion. My doctor recommended hyperbaric oxygen therapy as a way to speed the healing process so I could be ready for the volleyball season in the fall. Even after a few treatments I could feel myself healing quickly, and the pain and swelling diminishing. It was so so easy and the feeling of being in the chamber was almost spa-like. Unreal. Great place, totally recommend!

Mike Black
Hyperbaric Oxygen Patient
After a traumatic brain injury in 2011 I was having problems with short term memory issues and after using the Hyperbaric chambers here at The Hyperbaric Centers of Texas we have seen a marked improvement. Thank you Dr. Johnson!

 I can say now after neurofeedback and your counsel, I believe my son is set up for success in life. After being diagnosed as ADHD as a child and on meds, this became a band aid for his true health. He depended heavily on medicine just to feel normal. We soon saw improvement weeks into neurofeedback. My son has learned life habits that will improve his quality of life. He is now medicine free and has no side effects or crashes at the end of the day. For the first time in a long time, I feel I have my son back! On behalf on my entire family, thank you!


I came to your office in tremendous physical and emotional pain, and the care I have received has been thorough, highly effective, and life-changing for me and my family. I have been going to many doctors since I sustained combat injuries, and have had several surgeries. None have been as effective as you and your team’s work. I feel like I am getting my life back again. My mental state is improving and I have been able to get off two of my medications. You have amazing team members that care.

Johnson Medical Associates is a state-of-the-art medical clinic that offers comprehensive medical services to patients in a friendly, professional environment.

We Are Located


Johnson Medical Associates
997 Hampshire Lane
Richardson, TX 75080-8105

Contact Us

+1 (972) 479-0400

+1 (800) 807-7555

+1 (972) 479-9435

our hours

9:00am – 4:30pm


Saturday & Sunday: