Summary

Dr. Mike Leonis is a gastroenterologist and pediatric specialist with three decades of medical experience. He earned his medical degree from Washington University in St. Louis School of Medicine, bringing extensive expertise to both adult digestive health and pediatric care. His dual specialization allows him to treat gastrointestinal conditions across all age groups. Dr. Leonis speaks Chinese and French, enabling him to communicate with diverse patient populations.

Dr. Leonis practices at multiple Cleveland Clinic locations, including the main campus in Cleveland and the Mentor Hospital in Mentor, Ohio. He is affiliated with several prestigious facilities including Cleveland Clinic Akron General, Marymount Hospital, and Cleveland Clinic Children's Hospital. His clinical focus includes treating abdominal pain and various forms of constipation. He performs essential diagnostic procedures such as blood tests and complete blood counts to help identify underlying health conditions. Patients rate Dr. Leonis 3.3 out of 5 stars on average.
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Overview based on verified provider data

Quick Facts

  • 3.3
  • 30 years of experience
  • speaks Chinese, French
  • Washington University In St Louis School Of Medicine
  • 3 written reviews
  • 2 specialties
  • 2 areas of expertise
  • 7 hospital affiliations
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Mike Anthony Leonis has 2 locations

Cleveland Clinic

9500 Euclid AveCleveland, OH 44195

Cleveland Clinic Mentor Hospital

8300 Norton PkwyMentor, OH 44060

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Dr. Mike Anthony Leonis, MDAshley Anderson, APRNBrendon Bower, APRNStephanie Rose, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
3.3 
30 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Chinese, French Speaks English Speaks English Speaks English
Cleveland , OHSacramento , CATempe , AZColumbus , OH
Med School: Washington University In St Louis School Of Medicine Med School: East Tennessee State University - Quillen College of Medicine Med School: University of Cincinnati Med School: University of Toledo
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Insurance Plans Accepted by Dr. Mike Anthony Leonis

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Mike Anthony Leonis has the following 2 specialties

Specialty Expertise

Dr. Mike Anthony Leonis has the following 2 areas of expertise

  • Pediatric Gastroenterology
  • Pediatrics

Certifications, License, & Education

30 Years Experience

Dr. Mike Anthony Leonis holds an expired medical license in the state of Ohio.

Medical License

Medical Doctor with an expired medical license in the state of Ohio that expired in 2026.

Education & Training

Medical School

Graduated from Washington University In St Louis School Of Medicine in 1996.

NPI Number

Dr. Leonis' NPI number is 1669402087.

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Frequently Asked Questions

What languages does Dr. Mike Leonis speak?
Dr. Mike Leonis speaks Chinese and French.
Which hospitals is Dr. Mike Leonis affiliated with?
Dr. Mike Leonis is affiliated with Cleveland Clinic Akron General, Cleveland Clinic, Marymount Hospital, Cleveland Clinic South Pointe Hospital, Childrens Hospital, Cleveland Clinic Childrens Hospital, and Cleveland Clinic Mentor Hospital.
Where is Dr. Mike Leonis's office located?
Dr. Mike Leonis's office is located at 9500 Euclid Ave, Cleveland, OH, 44195.
Is Dr. Mike Leonis accepting new patients?
Dr. Mike Leonis has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Mike Leonis?
You can find contact information for Dr. Mike Leonis here on Vitals.

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