Our Medical Practices are Still Open!

Chronic and other medical issues don’t take a break during pandemics and it’s very important to address any health issues while they’re minor rather than having them turn into a more serious situation.

We are actively evaluating already-scheduled appointments – converting most to online video or telephone appointments – and we can do the same with any immediate health concerns you or your family members may have.

Please don’t wait! Reach out to our office if you need us. We have several options to treat you without you having to come into the office. And in the instance where we feel it’s vital that you do come into the office, rest assured that we have taken every precaution to keep you safe.

Appointments and inquiries can be made in the following ways:

Your provider will decide whether a telephone call, online video visit or in-office visit is most appropriate for your situation. Healthcare insurers are now covering telemedicine (online video) visits to help you maintain access to care during the pandemic.

UR Medicine Thompson Health is here to support the health and well-being of our community during this difficult time. Again, we are eager to meet your needs and especially eager to head off any health concerns that have the potential of worsening if care is delayed.

F.F. Thompson Medical Practices (April 9, 2020)

* It is important that you keep up with your prescribed medications. Remember that the drive-thru at CMG Pharmacy is also open at 335 Parrish Street in Canandaigua. No need to even get out of your car.


 Part of F.F. Thompson Hospital 

Gastroenterologists are specialists who diagnose and treat problems of the digestive organs - esophagus, stomach, liver, pancreas, small and large intestine, bile ducts and gallbladder. A Hepatologist is a specialist who specifically treats disorders of the liver. 

Our highly-trained staff at F.F. Thompson Hospital Gastroenterology provides comprehensive and compassionate care, focused on quality patient outcomes. 

Thompson offers many endoscopy procedures – a minimally-invasive procedure that uses a small instrument called an endoscope to see the inside of the digestive tract. 


Conditions Treated

  • Celiac Disease
  • Cirrhosis
  • Gastritis and Duodenitis
  • Gastroesophageal Reflux Disease (GERD)
  • Inflammatory Bowel Disease (IBD)
  • Ischemic Bowel Disease
  • Malignant Neoplasm of Colon
  • Crohn’s Disease
  • Ulcerative Colitis
  • Barrett’s Esophagus
  • Peptic Ulcer Disease
  • Irritable Bowel Syndrome
  • Diverticulitis


If you have any of the following symptoms, you may benefit from the specialized care of a gastroenterologist for treatment:

  • Persistent nausea and vomiting
  • Abdominal pain
  • Rectal bleeding
  • Change in bowel habits
  • Ongoing diarrhea
  • Constipation
  • Swallowing difficulty (dysphagia)
  • Heartburn
  • Jaundice

Thompson Health Gastroenterology

(As of May 4, 2020)
Marilyn Sands Outpatient Clinic
395 West Street, Door 20
Canandaigua, NY 14424

(Directions & Map)

Dr. Suri Karthikeyan

(585) 602-0280
NEW FAX: 585-978-8278

Office Hours:
Monday & Tuesday: 8 am - 5 pm