> > > > Dr. Gregory Katz, MD
Dr. Gregory Jonathan Katz MD is a male Family Practitioner, has 19 years of experience and practices in Internal Medicine, Family Medicine, and Ophthalmology.
Video profile
Dr. Gregory Katz has 5 office locations.
Newport Beach
Newport Center Medical Group
520 Superior Ave
Ste 220
Newport Beach, CA 92663

Phone Number
Locations and availability (5)
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

  • Currently 3.5 of 4 stars
Patient comments (12)

The overall average patient rating of Dr. Gregory Katz, Internist, Family Practitioner, Ophthalmologist is Excellent. Dr. Katz has been reviewed by 15 patients who have provided 12 comments. The rating is 3.5 out of 4 stars.

Patient Ratings
Ease of Appointment 2.3
  • Currently 2.3076923076923 of 4 stars
Promptness 3.1
  • Currently 3.0769230769231 of 4 stars
Courteous Staff 2.9
  • Currently 2.9230769230769 of 4 stars
Accurate Diagnosis 3.5
  • Currently 3.5384615384615 of 4 stars
Bedside Manner 3.6
  • Currently 3.6153846153846 of 4 stars
Spends Time with Me 3.3
  • Currently 3.3076923076923 of 4 stars
Follows Up After Visit 3.3
  • Currently 3.3076923076923 of 4 stars

Specialties & Research

Dr. Gregory Katz, MD is board certified in Internal Medicine.

  • He has special expertise in 1 area:
  • Glaucoma

Education & Awards

Dr. Katz graduated from Yeshiva University, Bronx. He has 2 awards.

Patients' Choice Award (2009 - 2010, 2012)
Compassionate Doctor Recognition (2010, 2012)


Dr. Katz has 6 hospital affiliations:

  • Providence Hospital and Medical Center 
  • Hoag Memorial Hospital Presbyterian 

Accepted Insurance Plans

Dr. Katz accepts these health insurances in at least one office:

  • United Healthcare - 14 plans
  • Blue Shield of California - 2 plans
  • Great-West Healthcare - 1 plan
  • CaIOPTIMA - 2 plans
  • Anthem Blue Cross - 4 plans
  • Humana - 3 plans
  • Cigna - 3 plans
  • Aetna - 3 plans
  • Blue Cross Blue Shield of Michigan - 2 plans
  • HealthPlus of Michigan - 13 plans

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Additional Information
Where does Dr. Gregory J. Katz practice?
Dr. Gregory Katz practices Internal Medicine, Family Medicine, and Ophthalmology near Newport Beach, CA.
Additional practice locations include: Ypsilanti, MI and Livonia, MI.
See Newport Beach Internists, Newport Beach Family Physicians, and Newport Beach Ophthalmologists.