Individual provider · Type 1 NPI

John Joseph Ondrejka, MD

Internal Medicine Physician · Mentor, OH

NPI number 1770543159 Active

Practice location

7956 Tyler Blvd
Mentor, OH 44060-4806

Call (440) 716-1283 Map

Fax (440) 716-1605

Mailing address

510 5th Ave
Chardon, OH 44024-1076

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000X35-055148 (OH)

Internal Medicine Physician: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medi…

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About NPI 1770543159

John Joseph Ondrejka, MD's National Provider Identifier is 1770543159, issued on Mar 28, 2006. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Mentor, OH. The record was last updated on Jul 13, 2026.