Browse Health
34 years of experience
Accepting new patients
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. Marc Greenstadt:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

  • Currently 3.5 of 4 stars
Patient comments (3)

The overall average patient rating of Dr. Marc Greenstadt is Excellent. Dr. Greenstadt has been reviewed by 8 patients who have provided 3 comments. The rating is 3.5 out of 4 stars.

Patient Ratings
Ease of Appointment 3.4
  • Currently 3.4 of 4 stars
Promptness 3.6
  • Currently 3.6 of 4 stars
Courteous Staff 3.0
  • Currently 3 of 4 stars
Accurate Diagnosis 3.8
  • Currently 3.8 of 4 stars
Bedside Manner 3.8
  • Currently 3.8 of 4 stars
Spends Time with Me 3.6
  • Currently 3.6 of 4 stars
Follows Up After Visit 3.0
  • Currently 3 of 4 stars

Specialties & Research

Dr. Marc Greenstadt, MD is board certified in Internal Medicine.

  • He has special expertise in 2 areas:
  • Diabetes Mellitus
  • Diabetes

Education & Awards

Dr. Greenstadt graduated from University of California at Los Angeles. He has 2 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Compassionate Doctor Recognition (2013)


Dr. Greenstadt has 3 hospital affiliations:

  • Valley Presbyterian Hospital 
  • Northridge Hospital Medical Center, Roscoe Boulevard Campus 
  • Northridge Hospital Med Ctr Rosco 


  • English

> > > > Dr. Marc Greenstadt, MD

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Additional Information
Dr. Marc Abel Greenstadt MD is a male Internist, has 34 years of experience and practices in Internal Medicine.
Where does Dr. Marc A. Greenstadt practice?
Dr. Marc Greenstadt has 1 office location.
Dr. Marc Greenstadt practices Internal Medicine near Northridge, CA.
See Northridge Internists.