About Dr. John Marshall, MD
Dr Marshall is Board Certified in Family Medicine and has had a distinguished career in the US Air Force Medical Corp, retiring as Chief of Medical Staff at Brooks Air Force Base in San Antonio. He continued to serve in community medicine as Staff Physician with the University Health System in San Antonio.
Dr Marshall has served with distinction at Faith Family Family first as a volunteer and now in retirment continuing to work two days a week and vounteering at other times.
Procedures & Services
Patient Education Resources
How is atopic dermatitis different from eczema?
Atopic dermatitis and eczema are often used interchangeably, but they are not exactly the same thing. Atopic dermatitis is a type of eczema.Eczema is a general term that refers to a group of condition...
Atopic dermatitis and eczema are often used interchangeably, but they are not exactly the same thing. Atopic dermatitis is a type of eczema.Eczema is a general term that refers to a group of condition...
I have COPD. What can help me breathe better?
Treatment for COPD can help improve breathing and slow the progression of the disease. Some treatments include:bronchodilators, which are medications that relax the muscles around the airways to help ...
Treatment for COPD can help improve breathing and slow the progression of the disease. Some treatments include:bronchodilators, which are medications that relax the muscles around the airways to help ...
I have high cholesterol. When should I consider starting a statin?
High cholesterol is a major risk factor for heart disease and stroke. Your healthcare provider will consider several factors when deciding whether or not to prescribe a statin to lower your cholestero...
High cholesterol is a major risk factor for heart disease and stroke. Your healthcare provider will consider several factors when deciding whether or not to prescribe a statin to lower your cholestero...
My PSA is elevated. What should I do next?
An elevated PSA (prostate-specific antigen) level can be a sign of prostate cancer, but it can also be caused by other conditions such as an enlarged prostate or a urinary tract infection. If your PSA...
An elevated PSA (prostate-specific antigen) level can be a sign of prostate cancer, but it can also be caused by other conditions such as an enlarged prostate or a urinary tract infection. If your PSA...
What are some forms of contraception if I don't want to take birth control pills?
There are several forms of contraception available for individuals who do not want to take birth control pills. Some of the most popular options include:Intrauterine device (IUD): An IUD is a small, T...
There are several forms of contraception available for individuals who do not want to take birth control pills. Some of the most popular options include:Intrauterine device (IUD): An IUD is a small, T...