Summary

Dr. Mike Leonis is a gastroenterologist and pediatric specialist who brings three decades of medical experience to his practice. He earned his medical degree from Washington University in St. Louis School of Medicine, establishing a strong foundation for his dual expertise in digestive health and pediatric care. Dr. Leonis speaks Chinese and French, allowing him to connect with diverse patient populations.

Dr. Leonis practices at Cleveland Clinic locations in Cleveland and Mentor, Ohio, while maintaining an affiliation with Cincinnati Children's Hospital Medical Center. He specializes in treating abdominal pain and constipation, including abdominal pain during pregnancy. His procedural expertise includes blood tests and liver function assessments through alkaline phosphatase testing and hepatic function panels. Patients have given Dr. Leonis an average rating of 3.3 out of 5 stars.

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
  • 2 board certifications
  • 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

Compare with Similar Doctors

Dr. Mike Anthony Leonis, MD
Ashley Anderson, APRN
Stephanie Rose, APRN
Brendon Bower, APRN
Dr. Mike Anthony Leonis, MDAshley Anderson, APRNStephanie Rose, APRNBrendon Bower, 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 , CAColumbus , OHTempe , AZ
Med School: Washington University In St Louis School Of Medicine Med School: East Tennessee State University - Quillen College of Medicine Med School: University of Toledo Med School: University of Cincinnati
Current Profile
View Profile View Profile View Profile

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.

Similar doctors

Frequently Asked Questions

Does Dr. Mike Leonis accept virtual/telehealth appointments?
Dr. Mike Leonis has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Mike Leonis's office located?
Dr. Mike Leonis's office is located at 9500 Euclid Ave, Cleveland, OH, 44195.
How can I make an appointment with Dr. Mike Leonis?
You can find contact information for Dr. Mike Leonis here on Vitals.
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.
Does Dr. Mike Leonis accept my insurance?
You can see the insurance plans that Dr. Mike Leonis accepts on their Vitals profile.

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.