Browse Health
Primary Care Doctor, Family Practitioner
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. Greg Maddex:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. Greg Maddex is Good. Dr. Maddex has been reviewed by 25 patients who have provided 5 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.8
Promptness 4.4
Courteous Staff 4.4
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 4.4

Education & Awards

Dr. Maddex graduated from Michigan State University College of Osteopathic Medicine, East Lansing. He has 1 awards.

Compassionate Doctor Recognition (2015)


Dr. Maddex has 3 hospital affiliations:

  • San Antonio Community Hospital 
  • Doctors Hospital of West Covina 
  • Western Med Ctr Santa Ana 


  • Spanish

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Additional Information
Dr. Greg Robert Maddex DO is a male Family Practitioner, has 34 years of experience and practices in Family Medicine.
Where does Dr. Greg R. Maddex practice?
Dr. Greg Maddex has 1 office location.
Dr. Greg Maddex practices Family Medicine near Diamond Bar, CA.
See Diamond Bar Primary Care Doctors.