Dr. Denis Peter O'Brien MD is a male Orthopaedic Surgeon, has 27 years of experience and practices in Orthopaedic Surgery and Surgery.
Video profile
Dr. Denis O'Brien has 4 office locations.
Potomac Valley Orthopedic
3414 Olandwood Ct
Olney, MD 20832

Phone Number
Locations and availability (4)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

  • Currently 3 of 4 stars
Patient comments (8)

The overall average patient rating of Dr. Denis O'Brien is Good. Dr. O'Brien has been reviewed by 10 patients who have provided 8 comments. The rating is 3 out of 4 stars.

Patient Ratings
Ease of Appointment 3.7
  • Currently 3.7 of 4 stars
Promptness 3.3
  • Currently 3.3333333333333 of 4 stars
Courteous Staff 3.5
  • Currently 3.5 of 4 stars
Accurate Diagnosis 3.2
  • Currently 3.2 of 4 stars
Bedside Manner 3.1
  • Currently 3.1 of 4 stars
Spends Time with Me 2.9
  • Currently 2.9 of 4 stars
Follows Up After Visit 3.1
  • Currently 3.1 of 4 stars

Specialties & Research

  • He has special expertise in 6 areas:
  • Hip Osteoarthritis
  • Hip Surgery (Hip Replacement Arthroplasty)
  • Knee Osteoarthritis
  • Knee Surgery (Knee Replacement Arthroplasty)
  • Osteoarthritis (Hand and Wrist)
  • Sports Medicine

Education & Awards

Dr. O'Brien graduated from Georgetown University, Washington. He has 2 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2013)


Dr. O'Brien has 2 hospital affiliations:

  • Montgomery General Hospital Inc 
  • Howard County General Hospital 

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Additional Information
Where does Dr. Denis P. O'Brien practice?
Dr. Denis O'Brien practices Orthopaedic Surgery and Surgery near Olney, MD.
Additional practice locations include: Silver Spring, MD and Ellicott City, MD.
See Olney Orthopedic Surgeons and Olney Surgeons.