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 / MA

KATHERINE A. MARKELZ, DO

INTERNAL MEDICINE

Graduated: 2016

Also: OSTEOPATHIC MANIPULATIVE MEDICINE

NPI: 1013370279

Practice Locations (1)

16 CTR ST, SUITE 305

NORTHAMPTON, MA 010603031

4132039521

Source: CMS National Downloadable File, September 2026.

KATHERINE MARKELZ, DO | HealthCareAtlasUSA