Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John M Koval, MD

Individual provider Internal Medicine Physician · NPI 1992773451

John M Koval, MD is an Internal Medicine in Youngstown, Ohio. Graduated from Medical College of Ohio in 1980, 46 years ago. Practices with Triad Health Services LLC, a 253-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
46
Trained at
Medical College of Ohio
Licensed in
OH
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7641 Market St Ste 2
Youngstown, OH 44512-5980
Phone: (330) 884-2444
Fax: (330) 965-4836
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 35048160 (OH)

Record details

NPI number1992773451
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 10, 2006
Last updated in NPPESApril 13, 2015
Mailing address7629 Market St Ste 200, Youngstown, OH 44512-6082

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolMEDICAL COLLEGE OF OHIO
Graduated 1980 (46 years in practice)
Group practice Triad Health Services Llc — 253 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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