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

HOLLY A MAST

NURSE PRACTITIONER

Graduated: 2012

Offers telehealth

NPI: 1407101728

Practice Locations (3)

KNOX COMMUNITY HOSPITAL

16361 VILLAGE PKWY

FREDERICKTOWN, OH 430199585

7403993863

KNOX COMMUNITY HOSPITAL

1330 COSHOCTON AVE

MOUNT VERNON, OH 430501440

KNOX COMMUNITY HOSPITAL

307 VERNEDALE DR

MOUNT VERNON, OH 430502921

Source: CMS National Downloadable File, September 2026.

HOLLY MAST | HealthCareAtlasUSA