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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 (5)

The overall average patient rating of Dr. Oscar Marroquin is Excellent. Dr. Marroquin has been reviewed by 12 patients who have provided 5 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.4
Promptness 4.0
Courteous Staff 4.2
Accurate Diagnosis 4.4
Bedside Manner 4.4
Spends Time with Me 4.4
Follows Up After Visit 4.2

Specialties & Research

Dr. Oscar Marroquin, MD is board certified in Interventional Cardiology.

  • He has special expertise in 8 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • Heart Diseases
  • Heart Failure
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Stroke
  • Unstable Angina

Education & Awards

Dr. Marroquin graduated from Universidad Francisco Marroquin, Guatemala City. He has 3 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2008 - 2011)
Compassionate Doctor Recognition (2010, 2014)


Dr. Marroquin has 19 hospital affiliations:

  • UPMC Passavant 
  • Mercy Hospital of Pittsburgh 


  • Spanish

> > > > Dr. Oscar Marroquin, MD

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Additional Information
Dr. Oscar Clemente Marroquin MD is a male Internist, has 15 years of experience and practices in Internal Medicine, Cardiology, and Interventional Cardiology.
Where does Dr. Oscar C. Marroquin practice?
Dr. Oscar Marroquin has 4 office locations.
Dr. Oscar Marroquin practices Internal Medicine, Cardiology, and Interventional Cardiology near Pittsburgh, PA.
Additional practice locations include: Bethel Park, PA and Farrell, PA.
See Pittsburgh Internists and Pittsburgh Cardiologists.