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 / MD

DENIS O BRIEN, MD

ORTHOPEDIC SURGERY

Medical school: GEORGETOWN UNIVERSITY SCHOOL OF MEDICINE

Graduated: 1983

NPI: 1427053339

Practice Locations (4)

AMBER HILL PHYSICAL THERAPY INC

187 THOMAS JOHNSON DR

FREDERICK, MD 217024503

AMBER HILL PHYSICAL THERAPY INC

187 THOMAS JOHNSON DR, SUITE 6

FREDERICK, MD 217024503

CENTERS FOR ADVANCED ORTHOPAEDICS LLC

3414 OLANDWOOD CT

OLNEY, MD 208321384

3017740500

CENTERS FOR ADVANCED ORTHOPAEDICS LLC

3801 INTERNATIONAL DR

SILVER SPRING, MD 209061550

3015989715

Source: CMS National Downloadable File, September 2026.