4
8 Ratings with 1 written Review
Summary
Dr. Karl Mersich is a gastroenterologist who earned his medical degree from Semmelweis Medical University in Budapest. He completed his residency training at St. Mary's Hospital within the Unity Health System, with additional residency experience at UMDNJ. With nearly five decades of practice experience, Dr. Mersich holds board certification in internal medicine from the American Board of Internal Medicine. He provides care to patients in English.
Dr. Mersich practices at Gastroenterology of Greater Orlando in Orange City, Florida, and maintains an affiliation with Unity Hospital at Rochester Regional Health. His expertise includes treating conditions such as hemorrhoids, colon polyps, and esophagitis. He performs essential diagnostic procedures including colonoscopy and both upper and lower gastrointestinal endoscopy to evaluate digestive health concerns. Patients rate Dr. Mersich 4.0 out of 5 stars for his care.
Dr. Mersich practices at Gastroenterology of Greater Orlando in Orange City, Florida, and maintains an affiliation with Unity Hospital at Rochester Regional Health. His expertise includes treating conditions such as hemorrhoids, colon polyps, and esophagitis. He performs essential diagnostic procedures including colonoscopy and both upper and lower gastrointestinal endoscopy to evaluate digestive health concerns. Patients rate Dr. Mersich 4.0 out of 5 stars for his care.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 49 years of experience
- 36 insurance plans accepted
- speaks English
- St Mary'S Hosp-Unity Hlth Sys, Gastroenterology
- 1 written review
- 1 specialty
- 10 areas of expertise
- 2 board certifications
- 1 hospital affiliation
- 2 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Karl T. Mersich has 2 locationsGastroenterology of Greater Orlando - Orange City
2884 Wellness Ave Ste 100Orange City, FL 32763 Tel: (386) 668-2221
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Gastroenterology of Greater Orlando - Wellness Avenue Surgery Center
2863 WELLNESS AVEORANGE CITY, FL 32763 Tel: (386) 297-7239
Mon6:00 am - 5:00 pm
Tue6:00 am - 5:00 pm
Wed6:00 am - 5:00 pm
Thu6:00 am - 5:00 pm
Fri6:00 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Karl T. Mersich, MD | Lynn Collette-Zachar, APRN | Brendon Bower, APRN | Chimdi Mfebe, APRN |
| Gastroenterology | Gastroenterology | Gastroenterology | Gastroenterology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 49 Years of Experience | |||
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English | Speaks English | Speaks English | Speaks English |
| Orange City , FL | Tallahassee , FL | Tempe , AZ | Little Rock , AR |
| Med School: Semmelweis Orvostudomanyi Egyetem (Peter Pazmany Univ)- Budapest | Med School: Regis College | Med School: University of Cincinnati | Med School: Chamberlain University College of Nursing |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Karl T. Mersich
Medical Specialties
Karl T. Mersich has the following specialty
Specialty Expertise
Karl T. Mersich has the following 10 areas of expertise
Certifications, License, & Education
49 Years Experience
Karl T. Mersich holds an expired medical license in the state of Florida. They are board certified in Internal medicine by the American Board of Internal Medicine.
Board Certifications
Board certified in Internal medicine by the American Board of Internal Medicine.
Medical License
Medical Doctor with an expired medical license in the state of Florida that expired in 2026.
Education & Training
Residency
Completed their residency at St Mary'S Hosp-Unity Hlth Sys, Gastroenterology, St Mary's Hospital Rochester Ny, St Marys Hospital, and UMDNJ.
Medical School
Graduated from Semmelweis Orvostudomanyi Egyetem (Peter Pazmany Univ)- Budapest in 1977, Semmelweis University Faculty of Medicine in 1977, and University of Medicine of Budapest,Budapest, Hungary in 1977.
NPI Number
Karl T. Mersich's NPI number is 1275633737.
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Frequently Asked Questions
- Is Karl Mersich accepting new patients?
- Karl Mersich is accepting new patients on Vitals. View Karl Mersich's profile on Vitals to make an appointment.
- Does Karl Mersich accept my insurance?
- You can see the insurance plans that Karl Mersich accepts on their Vitals profile.
- Does Karl Mersich accept virtual/telehealth appointments?
- Karl Mersich has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Karl Mersich affiliated with?
- Karl Mersich is affiliated with Unity Hospital At Rochester Regional Health.
- Where is Karl Mersich's office located?
- Karl Mersich's office is located at 2884 Wellness Ave Ste 100, Orange City, FL, 32763.
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