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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 (3)

The overall average patient rating of Dr. John Ritter, Anesthesiologist, Pain Medicine is Excellent. Dr. Ritter has been reviewed by 9 patients who have provided 3 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.8
Promptness 4.6
Courteous Staff 4.4
Accurate Diagnosis 4.8
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

  • He has special expertise in 2 areas:
  • Nerve Block
  • Pain

Education & Awards

Dr. Ritter graduated from Medizinische Universitat Vienna. He has 3 awards.

Patients' Choice Award (2011 - 2012, 2014)
Compassionate Doctor Recognition (2012, 2014)
On-Time Doctor Award (2014)


Dr. Ritter has 5 hospital affiliations:

  • UCLA Medical Center 
  • Citrus Valley Medical Center - Queen of the Valley Campus 


  • English
  • German
  • Spanish

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Additional Information
Dr. John Wayne Ritter MD is a male Anesthesiologist and practices in Anesthesiology, Pain Medicine, and Pain Medicine.
Where does Dr. John W. Ritter practice?
Dr. John Ritter has 2 office locations.
Dr. John Ritter practices Anesthesiology, Pain Medicine, and Pain Medicine near Glendora, CA.
Additional practice locations include: Downey, CA.
See Glendora Anesthesiologists and Glendora Pain Management Doctors.