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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 (1)

The overall average patient rating of Dr. John O'Brien is Good. Dr. O'Brien has been reviewed by 3 patients who have provided 1 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.0
Promptness 3.7
Courteous Staff 4.3
Accurate Diagnosis 3.0
Bedside Manner 3.0
Spends Time with Me 3.0
Follows Up After Visit 3.0

Specialties & Research

Dr. John O'Brien, MD is board certified in Pediatrics.

  • He has special expertise in 2 areas:
  • Adolescent Medicine
  • Pediatrics

Education & Awards

Dr. O'Brien graduated from University of Vermont, Burlington.


Dr. O'Brien has 4 hospital affiliations:

  • York Hospital 
  • Memorial Hospital York 

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

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Additional Information
Dr. John O'Brien MD is a male Pediatrician, has 16 years of experience and practices in Pediatrics.
Where does Dr. John O'Brien practice?
Dr. John O'Brien has 4 office locations.
Dr. John O'Brien practices Pediatrics near Shrewsbury, PA.
Additional practice locations include: York, PA and Ottumwa, IA.
See Shrewsbury Pediatricians.