HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / OH

JOHN ANDREW MARAKAS, MD

INTERNAL MEDICINE

Graduated: 1978

NPI: 1598799140

Practice Locations (2)

NOVACARE REHABILITATION OF OHIO INC

656 YOUNGSTOWN WARREN RD

NILES, OH 444464356

3305051362

TRIAD HEALTH SERVICES LLC

901 TRAILWOOD DR

YOUNGSTOWN, OH 445125008

3307263000

Source: CMS National Downloadable File, September 2026.