Browse Health
30 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

  • Currently 4 of 4 stars
Patient comments (2)

The overall average patient rating of Dr. John Koval is Excellent. Dr. Koval has been reviewed by 14 patients who have provided 2 comments. The rating is 4 out of 4 stars.

Patient Ratings
Ease of Appointment 3.3
  • Currently 3.2857142857143 of 4 stars
Promptness 2.3
  • Currently 2.3333333333333 of 4 stars
Courteous Staff 3.9
  • Currently 3.8571428571429 of 4 stars
Accurate Diagnosis 4.0
  • Currently 4 of 4 stars
Bedside Manner 4.0
  • Currently 4 of 4 stars
Spends Time with Me 3.9
  • Currently 3.8571428571429 of 4 stars
Follows Up After Visit 3.3
  • Currently 3.25 of 4 stars

Specialties & Research

Dr. John Koval, MD is board certified in Internal Medicine.

Education & Awards

Dr. Koval graduated from Medical College of Ohio, Toledo. He has 3 awards.

Patients' Choice 5th Anniversary Award (2012)
Patients' Choice Award (2008 - 2012, 2014)
Compassionate Doctor Recognition (2010, 2012)


Dr. Koval has 9 hospital affiliations:

  • HMHP St Elizabeth Health Center 
  • Hillside Rehabilitation Hospital 


  • English

> > > > Dr. John Koval, MD

Similar doctors nearby

Dr. Kenneth Kenyhercz

Internal Medicine
33 years experience
Youngstown, OH

Dr. John Melville

Internal Medicine
8 years experience
Youngstown, OH

Dr. Edward Miller

Internal Medicine
16 years experience
Youngstown, OH

Dr. Ashraf Elguizgoui

Internal Medicine
36 years experience
Youngstown, OH

Dr. Bennie Allison

Family Medicine
29 years experience
Youngstown, OH

Dr. Elisabeth Young

Internal Medicine
25 years experience
Youngstown, OH
Search All Similar Doctors
Additional Information
Dr. John Michael Koval MD is a male Internist, has 30 years of experience and practices in Internal Medicine.
Where does Dr. John M. Koval practice?
Dr. John Koval has 1 office location.
Dr. John Koval practices Internal Medicine near Youngstown, OH.
See Youngstown Internists.