Dr. Ernesto Guerra, MD

Dr. Ernesto Guerra, MD

Gastroenterology  |  
Male  |  
Age 69
Insurances AcceptedSave
Dr. Ernesto Guerra, MD is a gastroenterology doctor who practices in San Antonio, TX. He is 69 years old and has been practicing for 41 years.

520 E Euclid Ave

San Antonio, TX 78212

Contact Information

(210) 271-0604

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Texas
  • Cigna
  • Humana
  • MultiPlan

*Please verify this information when scheduling an appointment.

Learn about Dr. Guerra

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you

Top Care Areas


See how frequently Dr. Guerra performs your care needs compared to other doctors.

very high
more than 99% of peers
Esophageal Diseases
very high
more than 99% of peers
Abdominal Pain
very high
more than 99% of peers

Dr. Guerra's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

We're trying something new with Top Care Areas.Was it helpful for you?YesNo



  • Gastroenterology

Board Certifications

  • Gastroenterology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anal Prolapse
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Blood Disorders
  • Cancer
  • Cholecystitis and Gallstones
  • Cholelithiasis
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysphagia
  • Enteritis
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastroparesis
  • Heartburn
  • Hemorrhoids
  • Hepatitis C
  • Hernia
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Liver Damage from Alcohol
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Reflux Esophagitis
  • Stomach Cancer
  • Stomach Diseases
  • Stomach and Small Intestine Cancer
  • Stomal Ulcer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Enteritis
  • Viral Hepatitis
  • Vomiting Disorders


Read More


  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Gastroenterology Procedures
  • Liver Biopsy

Background Check

0 Malpractice Claims

No malpractice history found for Texas.

0 Sanctions

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

0 Board Actions

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


  • University Of California, San Diego, School Of Medicine
    Medical School | Graduated 1976
  • University Tex Health Scis Center
    Internship Hospital | Completed 1977
  • University Tex Health Scis Center
    Residency Hospital | Completed 1980
  • University Tex Health Scis Center
    Fellowship Hospital | Completed 1982

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Guerra has no media or publications listed.

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

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

Dr. Guerra's Reviews

Likelihood of recommending Dr. Guerra to family and friends
based on 21 total reviews (7 with comments)
Dr. Guerra's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    16 to 30 minutes
Patient Comments (7)
in san antonio, tx |
I will definitely continue recommending Dr. Guerra to family, friends, and others. Dr. Guerra has been my doctor for over 20 years. He is an exceptional doctor who is ethical, professional, patient, considerate, and very concerned about his patients' concerns. He orders necessary testing and analyzes results prior to determining the best treatment options. Dr Guerra is the "best-of-the-best" and very strongly recommended to whoever may be so fortunate see this review!
in San Antonio, TX |
Dr Guerra has been my Gastroenterologist for over 15 years and as a retired RN I would place my care in his hands on any day. He has performed both Endoscopies and Colonoscopies on me multiple times and I have sustained no negative complication.He is very easy to talk to and explains things fully.
in San Antonio, TX |
I have been a patient of Doctor Guerra's nearly 18 years. I first saw him as a favor for the Orthopedic Surgeon my mother worked for at the time. Prior to that he had a policy of not seeing patients under 18 years of age. I am forever grateful that he did as the Pediatric Gasteroenterologist had misdiagnosed Crohn's for 3 years. Dr. Guerra, I can say with all honesty, saved my life when he agreed to see me when I was only 16 years old.
San Antonio, Texas |
Dr Guerra is nice and funny. The staff I saw that I can really speak highly of is the Nurse Practitioner, Karen Spencer. I would go back and request to be seen by her. Aside from that, staff is courteous and effective which makes things easier. Wait time can get long.
in San Antonio, TX |
Phenomenal as always!! Dr Guerra and his staff are superb!! Super friendly!! I'm his patient for life!!
in San Antonio, TX |
I went in for a routine colonoscopy, my first one. Dr. Guerra was very attentive, has a very positive and caring attitude, a great bedside manner and really listens. He explained what he saw in the photographs. When I went back for my follow-up, he explained the surgical options and what he would recommend and even wrote out notes for me to give to my surgeon. Not only is he a great doctor, but one of the nicest guys I ever met. I highly recommend him.
in San Antonio, TX |
Very Professional office and staff. Will encourage my friends and family to consider.
Have you seen Dr. Ernesto Guerra, MD?
Are you Dr. Guerra?
Make it easy for patients to share their feedback. Also manage your personalized profile!

Visit Dr. Guerra

Now Accepting New Patients
Dr. Guerra accepts 6 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
  • Blue Cross Blue Shield
    Blue Card PPO
  • Blue Cross Blue Shield of Texas
    Blue Advantage HMO
    Blue Choice
  • Cigna
    Cigna HMO
    Cigna PPO
    Open Access Plus
  • Humana
    Choice Care PPO
    Preferred PPO
  • MultiPlan
    MultiPlan PPO
    PHCS Network PPO

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Guerra has admitting privileges

Methodist Hospital
7700 Floyd Curl Dr
San Antonio, TX 78229
View Hospital Profile

View other doctors with similar experience to find the right doctor for you.

Internal Medicine