Mark Douglas Porta Jr., M.D.


9103 Jefferson Hwy

Baton Rouge, LA 70809

Quick Facts

  • Board Certified Gastroenterologist
  • Currently Accepting New Patients
  • Most Insurance Plans Accepted
  • Performs Colonoscopies

GA, LLC - Baton Rouge, LA - Jefferson Hwy

Gastroenterology in Baton Rouge, LA

GA, LLC - Baton Rouge, LA - Jefferson Hwy

9103 Jefferson Hwy

Baton Rouge, LA 70809

Open today 8AM - 5PM

About Mark Douglas Porta Jr., M.D.

Why did you choose to specialize in Gastroenterology?

I chose Gastroenterology because I enjoy the opportunity to interact and speak with patients on a daily basis. I believe this subspecialty provides both a medical and surgical approach to treatments. The procedural modalities available allow for both treatment and preventative therapies as well. I enjoy taking part in the evolution within the field of gastroenterology and look forward to seeing what the future holds.

Do you have a specialty of interest within GI?

No specific interest within GI at present.

Where did you study?

I went to Louisiana State University and graduated with a bachelors in basic science. I attended medical school at Louisiana State University in New Orleans from 2008-2012. I received my Internal Medicine training at Louisiana State University in Baton Rouge from 2012-2015. I completed subspecialty training in Gastroenterology and Hepatology at Louisiana State University in Shreveport from 2015-2018.

What certifications do you hold?

Board Certified in Internal Medicine, Board Eligible in Gastroenterology

What do you and your family enjoy doing in your spare time?

On my days off, I enjoy spending time with my wife, family, and friends. My passion outside the field of medicine is music. I have played electric and acoustic guitar for over 20 years and counting. I also enjoy playing golf and tennis.

Please list your professional affiliations.

American College of Gastroenterology
American Gastroenterology Association
American Society for Gastrointestinal Endoscopy


Dr. Porta was very knowledgeable, and explained the procedures fully so I could understand the next steps in a diagnosis of my problem. He gave me peace of mind about my diagnosis in a friendly easy to understand manner.

S.P. Google

Dr Porta was all I could want in a gastroenterologist. He made me feel comfortable and explained everything to me that I needed to know. I will gladly recommend him.

M.H. Google

I am completely happy with everyone there ..Dr. Porta was great

J.M. Google

Great Doctor. Always takes the time to explain thoroughly what’s going on. Would definitely recommend to others.

R.B. Google

Great experience! I have been treated with respect and dignity. I felt very comfortable talking about an uncomfortable problem. Have and will continue to recommend Dr. Porta and his staff! Very friendly process with a short wait for appointments if one at all.

S.A. Google


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