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Dr. John Gancayco, MD
Gastroenterology* Age 48
Dr. John Gancayco, MD
Dr. John Gancayco, MD is a Gastroenterologist in San Antonio, TX.
Dr. John Gancayco, MD

Dr. John Gancayco, MD

Gastroenterology* Age 48
San Antonio, TX
Accepting new patients
21 years of experience
Dr. John Gancayco, MD is a Gastroenterologist in San Antonio, TX.
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About Dr. John Gancayco, MD

Dr. Gancayco graduated from GEORGETOWN UNIVERSITY / MEDICAL CENTER. Dr. John Gancayco, MD is a Gastroenterologist in San Antonio, TX and has 21 years experience. Dr. Gancayco's office accepts new patients. Dr. Gancayco is board certified in Gastroenterology and accepts multiple insurance plans.

Experience Check

Enter a condition or procedure
Constipation
Flexible Sigmoidoscopy
Manometry
Constipation
Flexible Sigmoidoscopy
Manometry
Rigid Proctosigmoidoscopy
Abdominal Pain
Diarrhea
  • View other providers who treat Diarrhea
Gastroptosis
Dysphagia
Intestinal Diverticulosis
Gas-Bloat Syndrome
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Endoscopy
Colonoscopy
Duodenal Polypectomy
Gastritis
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Gastroesophageal Reflux Disease (GERD)
Metabolic Dysfunction Associated Steatotic Liver Disease (MASLD)
Unexplained Weight Loss
Nausea
  • View other providers who treat Nausea
Anal or Rectal Pain
Chronic Gastritis
Diaphragmatic and Hiatal Hernia
Irritable Bowel Syndrome
Colorectal Polyp
Anemia
  • View other providers who treat Anemia
Esophagitis
Noninfectious Gastroenteritis and Colitis
Inflammatory Bowel Disease
Hemorrhoids
Cirrhosis
Liver Damage from Alcohol
Esophageal Motility Disorders
Vomiting Disorders
Reflux Esophagitis
Intestinal Ulcer
Duodenitis
Pancreatitis
Gastric Ulcer
Acute Gastritis
Alcoholic Cirrhosis
Alcoholic Fatty Liver
Alcoholic Hepatic Failure
Alcoholic Hepatitis
Ascites
  • View other providers who treat Ascites
Autoimmune Hepatitis
Barrett's Esophagus
Barretts Esophagus with Dysplasia
Benign Neoplasm of the Digestive System
Bile Duct Obstruction
Biliary Cirrhosis
Bowel Strangulation
Celiac Disease
Cholangitis
Colon Cancer
Congenital Anomaly Esophagus
Copper Metabolism Disorders
Crohn's Disease
Dehydration
Diffuse Esophageal Spasm
Duodenal Ulcer
Dysentery
Enteritis
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Ulcer
Esophageal Varices
Gallstones
Gastrointestinal Bleeding
Gastrointestinal Malabsorption
Gastrojejunal Ulcer
Gastroparesis
Heartburn
Hepatitis C
Hepatorenal Syndrome
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Hypokalemia
Ileus
  • View other providers who treat Ileus
Infectious Diarrheal Disease
Intestinal Diverticulitis
Intestinal Obstruction
Lactose Intolerance
Liver Abscess
Mallory-Weiss Syndrome
Malnutrition
Pancreatic Pseudocyst
Pelvic Abscess
Peptic Ulcer
Pernicious Anemia
Primary Biliary Cholangitis
Primary Sclerosing Cholangitis
Proctoptosis
Pyloric Stenosis
Rectal Prolapse
Rectal Ulcer
Retroperitoneum Cancer
Splenomegaly
Ulcerative Colitis
Upper Digestive Tract Cancer
Viral Enteritis
Vitamin B12 Anemia
Vitamin_Deficiency
Colon Cancer Screening
Colorectal Cancer Screening
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Gallbladder Scan
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Liver Biopsy
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
Sigmoidoscopy
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • BSW Premier HMO
    BSW Access PPO
  • HealthyBlue Advantage
  • LocalPlus
    Cigna HMO
    Cigna PPO
    Open Access Plus
  • Navigate HMO
    Options PPO
    Choice Plus POS
    Navigate Plus POS
  • Blue Advantage HMO
    Blue Essentials HMO
    Blue Choice
  • Managed Choice (Open Access) POS
    Open Choice PPO
    Signature Administrators PPO
    Choice Plus POS II
    Aetna HMO
    AWH BaptistHealth HealthTexas Managed Choice
    Elect Choice (Open Access) EPO
    Premier Care Network Plus - Innovation Health
  • BlueCard PPO

Where Dr. John Gancayco, MD Sees Patients

  1. 1 Office
    621 Camden St Ste 202, San Antonio, TX 78215
    Monday
    08:00 - 17:00
    Tuesday
    08:00 - 17:00
    Wednesday
    08:00 - 17:00
    Thursday
    08:00 - 17:00
    Friday
    08:00 - 17:00
    Saturday
    Closed
    Sunday
    Closed
  2. 2 Steven G Rosenblatt MD PLLC
    2130 NE Loop 410 Ste 250, San Antonio, TX 78217
  3. 3 Brooke Army Medical Center
    3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
  4. 4 Gastroenterology Consultants Of San Antonio-Ne
    12850 Toepperwein Rd, Live Oak, TX 78233
    Monday
    08:00 - 17:00
    Tuesday
    08:00 - 17:00
    Wednesday
    08:00 - 17:00
    Thursday
    08:00 - 17:00
    Friday
    08:00 - 17:00

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Meet Dr. John Gancayco, MD

Specialties*
Gastroenterology
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
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FAQs About Dr. Gancayco's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. John Gancayco, MD. To arrange an appointment, call the number on Dr. Gancayco's profile.

Dr. John Gancayco, MD is affiliated with Methodist Hospital and Baptist Medical Center.

Yes, Dr. John Gancayco, MD holds board certification in Gastroenterology.

Training & Medical Education
Medical Education
  • GEORGETOWN UNIVERSITY / MEDICAL CENTER
    2005
Medical Education
Board Certifications
  • Gastroenterology
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

Hospitals Where Dr. John Gancayco, MD Practices

  • Methodist Hospital

    7700 Floyd Curl Dr, San Antonio, TX

  • Baptist Medical Center

    111 Dallas St, San Antonio, TX

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