Dr. John Clemmons, MD

Dr. John Clemmons, MD

GastroenterologyMaleAge 72

Gastroenterology

Dr. John Clemmons, MD is a Gastroenterology Specialist in Houston, TX and has over 47 years of experience in the medical field. He graduated from Howard University / College Of Arts and Sciences / Music Department in 1975. He is affiliated with medical facilities such as Hca Houston Healthcare Medical Center and CHI St. Luke's Health - Baylor St. Luke's Medical Center. His office accepts new patients.

Locations

John B. Clemmons Jr. MD P.A

Hector Del Castillojr.m.d.p.a.1213 Hermann Dr Ste 220 Houston, TX 77004
1

Hospital Highlight

Dr. Clemmons is affiliated with Hca Houston Healthcare Medical Center Houston, a highly rated hospital.

At a Glance

  • Explains Conditions Well Patients said this doctor explains conditions well. See reviews
  • Practices at Top Hospital Gastrointestinal Care Excellence Award™ See hospitals
  • Hospital Satisfaction Patients said they were highly satisfied at this doctor's hospital. See hospitals

More Gastroenterology Specialists at HCA Houston Healthcare Medical Center

Dr. Clemmons' Reviews

Likelihood to recommend Dr. Clemmons

4.1

Based on 75 ratings

5 Stars
74.66666666666667%
(56)
4 Stars
2.6666666666666665%
(2)
3 Stars
1.3333333333333333%
(1)
2 Stars
1.3333333333333333%
(1)
1 Star
20%
(15)
healthgrades logo

Leave a review

How likely are you to recommend
Dr. Clemmons
What went well
No reviews yet
What could be improved
No reviews yet

Your trust is our top concern.

We strive to keep the reviews trustworthy, honest & fair.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

RecentHighestLowestMost Helpful
Reply
I was looking to do a colonoscopy without anesthesia or sedation and Dr. Clemmons provided a great experience for me. His entire team is very knowledgeable and helpful. He gave me good preparation and a lot of information following the procedure regarding my situation. I would highly recommend him to anyone.
What went well
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Anne Loo – Jul 15, 2022
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Miss Diagnosis
I was a patient of Dr. Clemmons for many years and continued to have the same medical problem. On a visit to the ER I ran into Dr. A. Avvo who had a scan run on me and found out I had Stomach cancer and had, had it for years. Dr. Avvo did surgery on me and removed a large tumor that Dr. Clemmons had missed for years. As a result I no longer have the problems of the past.
What went well
No results
What could be improved
  • Staff wasn't friendly
Helpful
Lillian Lang – May 12, 2022
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
He has always been a the good doctor.
What went well
  • Appointment scheduling
  • Wait times
  • Appointment wasn't rushed
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Sha Hillard – Dec 04, 2021
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr. Clemmons comunicates with confidence and clarity. His staff is professional and friendly. The office is comfortable and attractive. The procedure went well. By the way, our familiy internist reinforced my exerience by positively endorsing Dr. Clemmons.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Mark Dulworth – Nov 11, 2021
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
STOP!, Do not have a procedure done with this man. My rating would be a negative 10, if I could. My experience was brutal and barbaric to say the least. He doesn't listen when you speak. My IV infiltrated into my hand and he refused to do anything about it. Started my procedure immediately without adequate IV meds. I was screaming, crying and writhing in pain but he just continued on, even having his male nurse lay across my belly, twice, in a dark room as a female intern sat by, observing this horrendous treatment. I was scared and no matter what I said or tried to do even screaming that "your killing me" fell on deaf ears. I would never refer anyone to this man. I am a 53 year old woman and in pretty good shape but for anyone who has polyps, God help them. I can't stress it enough, don't have this man touch you or anyone that you love.
What went well
  • Appointment scheduling
What could be improved
  • Office environment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
7 people found this helpful
Helpful
Natalie – May 25, 2021
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr Clemmons is an excellent physician. He is known in the Houston community, doctors go to his office for GI care. He has years of experience, a great eye for patients’ needs and he takes time to communicate. His staff are pleasant and the phone is answered. He is the specialist I recommend to friends and family.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
6 people found this helpful
Helpful
Cory Martin – Feb 24, 2021
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr. Clemmons was very nice to me - soft spoken and kind. Unfortunately the office decor and equipment have not been updated since 1975 (they still use pencils in their patient files). The woman who answers the phone was not only rude, but unprofessional and out of line on so many levels. My recommendation, based off my experience - find a different doctor who has a professional staff, real technology, LESS ATTITUDE and a little compassion.
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Office environment
  • Staff wasn't friendly
  • Long wait times
  • Didn't listen or answer questions
  • Didn't explain conditions well
7 people found this helpful
Helpful
Dec 17, 2020
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr Clemons works above & beyond for the wellness and care of his patients. He shows get concern & care and works tirelessly well into the late evenings to even do calls to check on patients and give reports. Extremely good Dr.
What went well
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
What could be improved
No results
4 people found this helpful
Helpful
Dianna Johnson – Sep 11, 2020
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
With time and age I have gone to many doctors. I keep coming back to Dr. Clemmons, Because he is knowledgeable he explains my conditions he takes time with and my concerns. Though he is a gastroenterologist. I come back to him because of his depth of knowledge. He has taken care of many of my family members as well as friends and coworkers. When I first went to him I thought that his bedside manner was pretty much "take care of the issues". But then I realize he had such a personal concern for me and all the others that I have referred. He is quite personable and funny. We all agreed that he is not about talking chit chat much because he is so focused on our well being. Bedside manner is kindness and concern.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
6 people found this helpful
Helpful
Sharon S – Jul 24, 2020
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr. Clemmons has been my gastroenterologist for several years. His experience and professionalism is outstanding. I would highly recommend him to anyone who experiences any GI issues.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
6 people found this helpful
Helpful
Kenneth Glynn Rubinstein-Bourghs – Jun 15, 2020
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
NEVER GO HERE. My husband had a colonoscopy. He told them ahead of time he has a lot of rectal pain and that he always requires double the standard sedation. I could hear him screaming from the waiting room multiple times. It was terrifying. I find out afterwards that they ran out of fentanyl (didn’t have any in the office) and only used versed. He told them several times beforehand that he would need pain meds. No one gave him the option of general anesthesia instead of conscious sedation. If he knew that he would have went with GA option. The staff were very friendly, but I was very disappointed still.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Explained conditions well
What could be improved
  • Didn't trust the provider's decisions
4 people found this helpful
Helpful
May 29, 2020
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Just had my second colonoscopy with Dr. Clemmons. He is the best at informing you what you need to do to live a healthier lifestyle Explains everything he finds during procedure. I wouldn't go anywhere else to have my procedures.
7 people found this helpful
Helpful
Monica – Dec 05, 2019
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
This Dr and his practice are AMAZING!!! I’ve been seeing him for 15 years and I can’t say enough about this practice from the people scheduling, the front office, those attending with him and of course Dr. Clemmons! This practice is SUPERB!!!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
3 people found this helpful
Helpful
Debra Hayes – Sep 30, 2019
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Exceptional Treatment.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
3 people found this helpful
Helpful
The Woodlands – May 10, 2019
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr. Clemens treatment style and care of patient is refreshing. I was made to feel at ease. His experience, knowledge and determination in finding a remedy is satisfactory. We are very close to find a treatment for my illness. Conrado Hernández 833-331-2268
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Conrado Hernandez in Houston, TX – Apr 24, 2019
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr. Clemmons is amazing, he literally saved my life. I was misdiagnosed by 3 other GI doctors 5 times prior to seeing Dr. Clemmons. He preformed an Upper GI and Colonoscopy on me & has been the doctor to diagnose, manage & help me to achieve remission of Crohn's Disease for over 6 years now. His staff is very professional and personable. I tell any and everyone that I know to go to him if dealing with GI complications.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
5 people found this helpful
Helpful
Erica G in Houston, TX – Aug 19, 2018
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Great doctor, great bed side manner, soft spoken an most of all he’s concerned about your heath
What went well
No results
What could be improved
No results
2 people found this helpful
Helpful
Aug 14, 2018
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr Clemmons is very easy to talk to, an extremely trustworthy and capable dr, maybe one of the top Gastro docs in Houston. Problem is, I had an endoscopy without full general anesthesia and it was very uncomfortable. Then had Colonoscopy & seemed like I had very little anesthesia at all- I was writhing in pain, some of the worst pain I believe I ever experienced. Would put Dr C next to God if he would just use full General anesthesia. 2 stars cause his decision to use very weak anesthesia
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
What could be improved
  • Didn't trust the provider's decisions
2 people found this helpful
Helpful
Mar 15, 2018
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr. Clemmons is a fantastic doctor. He is extremely knowledgable & takes the time necessary to explain any procedures, diagnosis & treatment so that his patient has a full understanding. I appreciate his patience & the fact that each patient is just that, a patient & not a number. I highly recommend Dr. Clemmons.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
3 people found this helpful
Helpful
Kim B in Missouri City, TX – Nov 30, 2017
×Post a ResponseAre you Dr. John Clemmons, MD?
Reply
Dr.Cemmons and his staff were extremely communicative, professional and above all nice. What an amazing experience. I will recommend him and his equally amazing staff to all my friends.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
2 people found this helpful
Helpful
Charlie Neath in Houston, TX – Nov 22, 2017
×Post a ResponseAre you Dr. John Clemmons, MD?

Leave a review

How was your experience with Dr. Clemmons?

Is this your profile?

Respond to reviews, add information, and reach more patients. Claiming is free and only takes a minute.

Claim your profile

Experience and Background Checks

Experience
Background

Background Check

No malpractice claims found for Texas
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Clemmons' experience treating your condition or procedure

Dr. Clemmons' Top Procedures and Conditions

Treatment Frequency
Abdominal Pain
very high
very high

Treatment Frequency

Dr. Clemmons treats Abdominal Pain more than 99% of his peers

Dr. Clemmons treats this condition more than 99% of his peers

Gastritis
very high
very high

Treatment Frequency

Dr. Clemmons treats Gastritis more than 97% of his peers

Dr. Clemmons treats this condition more than 97% of his peers

Hernia
very high
very high

Treatment Frequency

Dr. Clemmons treats Hernia more than 97% of his peers

Dr. Clemmons treats this condition more than 97% of his peers

Rating Includes other areas of care:

  • Abdominal Hernia
  • Diaphragmatic Hernia, Congenital
  • Diaphragmatic/Hiatal Hernia
  • Hiatal Hernia
  • Incisional Hernia
  • Inguinal Hernia
  • Pediatric Hernia
  • Traumatic Hernia
  • Umbilical Hernia
  • Ventral Hernia
Hide other areas of care

Dr. Clemmons' conditions and procedures:

  • 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
  • Diffuse Esophageal Spasm
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Dysphagia
  • Eosinophilic Esophagitis
  • Esophageal Diseases
  • Esophageal Motility Disorders
  • Esophageal Varices
  • Esophagitis
  • Familial Adenomatous Polyposis
  • Food Allergy
  • Gallstones
  • Gastritis
  • Gastroenterology Procedures
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastrojejunal Ulcer
  • Gastroparesis
  • Giardiasis
  • Heartburn
  • Hemorrhoids
  • Hepatitis A
  • Hepatitis C
  • Hepatorenal Syndrome
  • Hernia
  • Hiatal Hernia
  • Impedance Testing
  • Inflammatory Bowel Disease
  • Irritable Bowel Syndrome
  • Ischemic Colitis
  • Liver Damage from Alcohol
  • Mallory-Weiss Syndrome
  • Nausea
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Pelvic Abscess
  • Peptic Ulcer
  • Primary Biliary Cholangitis
  • Reflux Esophagitis
  • Stomach Diseases
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • VAP Lipid Testing
  • Viral Enteritis
  • Viral Hepatitis
  • Wireless pH Testing

Insurance Check

Search for your insurance provider

Dr. Clemmons accepts

Accepted insurance can change. Please double-check when making an appointment.

(832) 323-9383

Dr. Clemmons accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Amerigroup (Wellpoint)
Anthem
National (BlueCard) PPO
Assurant Health
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Texas
Blue Advantage HMO
Blue Choice
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna HMO
Cigna PPO
LocalPlus
Open Access
Open Access Plus
Commercial Insurance Company
Coventry Health Care
EmblemHealth
Emblem Health
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Government Employees Health Association (GEHA)
GEHA
HAP Insurance
Health Alliance
HealthSmart
Humana
Choice Care PPO
Preferred PPO
Mail Handlers Benefit Plan (MHBP)
Medicaid
Medical Mutual of Ohio
Molina Healthcare
Molina
MultiPlan
MultiPlan PPO
PHCS Network PPO
Principal Life
Tricare
TriCare for Life
UnitedHealthCare
Choice Plus POS
Navigate POS
United Healthcare

About Me

Biography

Dr. John Clemmons, MD is a Gastroenterology Specialist in Houston, TX and has over 47 years of experience in the medical field. He graduated from Howard...Read more

Specialties

  • Gastroenterology

Education

1981
Emory University Program
Fellowship Hospital
1981
Emory University Program
Residency Hospital
1977
Emory U Prog
Internship Hospital
1975
Howard University / College Of Arts and Sciences / Music Department
Medical School
,

Frequently Asked Questions

How can I make an appointment with Dr. John Clemmons, MD?

Call (832) 323-9383 to make an appointment as a new patient. Click here for more information.

Is Dr. John Clemmons, MD accepting new patients?

Dr. John Clemmons, MD generally accepts new patients on Healthgrades. You can see Dr. Clemmons' profile to make an appointment.

Does Dr. John Clemmons, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Clemmons accepts your insurance.

What are Dr. John Clemmons, MD's top areas of care?

Dr. Clemmons frequently treats Abdominal Pain, Gastritis, and Hernia. See all procedures and conditions Dr. Clemmons treats.

Where is Dr. John Clemmons, MD's office located?

Dr. Clemmons' office is located at 1213 Hermann Dr Ste 220, Houston, TX 77004. Find other locations and directions on Healthgrades.

Does Dr. John Clemmons, MD offer telehealth services?

Dr. Clemmons has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

Affiliated Hospitals

Dr. Clemmons is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Hca Houston Healthcare Medical Center

Houston, TX

66% Patients that would definitely recommend, 4% lower than the national average

5 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2022)

CHI St. Luke's Health - Baylor St. Luke's Medical Center

Houston, TX

71% Patients that would definitely recommend, 1% higher than the national average

20 Awards Received

Award Highlight: Gastrointestinal Care Excellence Award™ (2022)

Houston Methodist Hospital

Houston, TX

82% Patients that would definitely recommend, 12% higher than the national average

34 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2022)

Memorial Hermann - Texas Medical Center

Houston, TX

77% Patients that would definitely recommend, 7% higher than the national average

14 Awards Received

Award Highlight: Gastrointestinal Surgery Excellence Award™ (2021)

Memorial Hermann Memorial City Medical Center

Houston, TX

76% Patients that would definitely recommend, 6% higher than the national average

8 Awards Received

Award Highlight: Outstanding Patient Experience Award™ (2021)

Memorial Hermann Northwest Hospital

Houston, TX

15 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2020)

Saint Joseph Medical Center

Houston, TX

53% Patients that would definitely recommend, 17% lower than the national average

1 Award Received