Dr. John Clemmons Jr, MD
New Patients

Dr. John Clemmons Jr, MD


Gastroenterology | Male

John B Clemmons Jr MD PA 1213 Hermann Dr Ste 420 Houston, TX 77004 Get Directions


Dr. John Clemmons Jr, MD is a gastroenterology doctor who practices in Houston, TX. He is 67 years old and has been practicing for 42 years. Dr. Clemmons Jr is affiliated with Baylor St. Luke's Medical Center, Park Plaza Hospital, Saint Joseph Medical Center, Memorial Hermann Memorial City Medical Center, Memorial Hermann - Texas Medical Center and Houston Methodist Hospital .

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Dr. Clemmons Jr' Experience

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Memberships & Professional Affiliations

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Visiting Dr. Clemmons Jr

Dr. Clemmons Jr accepts 22 insurance carriers

Affiliated Hospitals

Hospital Quality
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Dr. Clemmons Jr' Reviews

Likelihood of recommending Dr. Clemmons Jr to family and friends
based on 50 total surveys (8 with reviews)
Dr. Clemmons Jr' Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Reviews (8)
in Houston, TX |
Dr. Clemmons was friendly, professional and a great communicator. Making an appointment for a colonoscopy was easy and his office staff were wonderful. He gave me all the information I needed and asked several times if I had any questions. His answers to the few questions I had were complete and easy to understand. He has a calm and polite manner that put me at ease. My appointment was at 8:00. I arrived at 7:40 and completed forms and I was taken back to an exam room almost right at 8:00.
Prairieville, LA |
Wonderful staff and doctor!!!!!
in Kingwood TX |
Dr. Clemmons is an excellent specialist. He is extremely thorough, professional, and listens to what you have to say. This doctor does not have regular hours. He reviews your test results and call on weekends!! There is no waiting long periods of time to hear tests results. I have referred several to Dr. Clemmons. They are as happy with him as I.
Houston, TX |
Abrupt, spoke over me, would not allow me to describe my symptoms, prescribed medication which I could not take (due to other medical conditions and prescriptions), ushered me out the door without ever hearing me. I ended up in ER a few days later. I’m on a high-deductible plan too so I was paying out of pocket. What a waste of time and money and dangerous to boot. Staff is unprofessional and rude as well.
in Houston, TX |
Dr. Clemmons has been my doctor since 1988. He always taken the time to explain everything concerning my health to me and has referred me to other doctors of whom I have always been pleased with. Thank you Dr. Clemmons for taking care of me and my family members. Respectfully yours, Elizabeth Teagle
in Houston, TX |
Not medicated properly most painful experience I ever had you can hear other patients screaming
in Sedona, AZ |
Love this doctor. He was personable, professional, and knowledgeable. I moved to AZ, so his expertise will be missed.
in Houston, TX |
I was not medicated properly prior to the colonoscopy. It was the most painful procedure that I have ever experienced in my life. I would never get another colonoscopy from this man.
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Dr. Clemmons Jr' experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Gastroenterology
  •  Board certified in Gastroenterology and Internal Medicine
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Clemmons Jr has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for Texas.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Clemmons Jr' Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Gastroenterology
  • Internal Medicine

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • All Types of Food Poisoning
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Tumor
  • Blood Disorders
  • Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Dysphagia
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Varices
  • Esophagitis
  • Gallstones
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastroparesis
  • Giardiasis
  • Heartburn
  • Hemorrhoids
  • Hepatitis C
  • Hepatopulmonary Syndrome
  • Hernia
  • Inflammatory Bowel Disease
  • Irritable Bowel Syndrome
  • Liver Damage from Alcohol
  • Nausea
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Reflux Esophagitis
  • Stomach Diseases
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Enteritis
  • Viral Hepatitis


  • Medical School
    Howard University College Of Medicine

    Graduated in 1975

  • Internship Hospital
    Emory University Program

    Completed in 1977

  • Residency Hospital
    Emory University Program

    Completed in 1981

  • Fellowship Hospital
    Emory University Program

    Completed in 1981

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. Clemmons Jr does not have any memberships or affiliations listed. If you are Dr. Clemmons Jr and would like to add memberships or affiliations, please update your free profile.


  • Gastroenterology
  • Internal Medicine

Procedures Performed

  • Bile Duct Procedure
  • Colonoscopy
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • ERCP (Endoscopic Retrograde Cholangiopancreatography)
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Gastroenterology Procedures
  • Incision and Removal of Foreign Object
  • Liver Biopsy