> > > > Dr. John O'Brien, MD
Dr. John Sebastian O'Brien MD is a male Internist, has 31 years of experience and practices in Psychiatry, Legal Medicine, and Cardiology.
Dr. John O'Brien has 1 office location.
John S Obrien II, MD
2001 Hamilton St
Apt 1515
Philadelphia, PA 19130

Phone Number
Locations and availability (1)
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).

Learn more about Dr. John O'Brien:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

  • Currently 2.5 of 4 stars
Patient comments (2)

The overall average patient rating of Dr. John O'Brien is Good. Dr. O'Brien has been reviewed by 2 patients who have provided 2 comments. The rating is 2.5 out of 4 stars.

Patient Ratings
Accurate Diagnosis 1.0
  • Currently 1 of 4 stars
Bedside Manner 1.0
  • Currently 1 of 4 stars

Specialties & Research

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

  • He has special expertise in 4 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • Unstable Angina

Education & Awards

Dr. O'Brien graduated from Thomas Jefferson University, Philadelphia.


Dr. O'Brien has 3 hospital affiliations:

  • Thomas Jefferson University Hospital 
  • Thomas Jefferson University Ho, Philadelphia, Pa 
  • Pennsylvania Hosp, Philadelphia, Pa 

Similar doctors nearby

Dr. Jack Forman

41 years experience
Philadelphia, PA

Dr. Ashley Angert

42 years experience
Philadelphia, PA

Dr. Marc Lipschutz

36 years experience
Philadelphia, PA

Dr. Oscar Weiner

Philadelphia, PA

Dr. Ralph Fishkin

44 years experience
Philadelphia, PA

Dr. Richard Cohen

33 years experience
Philadelphia, PA
Search All Similar Doctors
Additional Information
Where does Dr. John S. O'Brien practice?
Dr. John O'Brien practices Psychiatry, Legal Medicine, and Cardiology near Philadelphia, PA.
See Philadelphia Psychiatrists and Philadelphia Cardiologists.