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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

Patient comments (4)

The overall average patient rating of Dr. John O'Brien is Good. Dr. O'Brien has been reviewed by 15 patients who have provided 4 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.4
Promptness 3.4
Courteous Staff 3.4
Accurate Diagnosis 3.7
Bedside Manner 3.7
Spends Time with Me 3.7
Follows Up After Visit 3.4

Specialties & Research

Dr. John O'Brien, MD is board certified in Physical Medicine & Rehabilitation.

  • He has special expertise in 5 areas:
  • Ankle Disorders
  • Carpal Tunnel Syndrome
  • Hip Surgery (Hip Replacement Arthroplasty)
  • Knee Disorders
  • Scoliosis

Education & Awards

Dr. O'Brien graduated from St. George's University, Bay Shore.


Dr. O'Brien has 24 hospital affiliations:

  • Masonic Home and Hospital 
  • Midstate Medical Center 

> > > > Dr. John O'Brien, MD

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Additional Information
Dr. John W O'Brien MD is a male Physical Medicine/Rehab Specialist, has 30 years of experience and practices in Physical Medicine & Rehabilitation.
Where does Dr. John W. O'Brien practice?
Dr. John O'Brien has 2 office locations.
Dr. John O'Brien practices Physical Medicine & Rehabilitation near West Haven, CT.
Additional practice locations include: Milford, CT.
See West Haven Physiatrists.