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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).

Learn more about Dr. Charles Renner:

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  1. Qualifications
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Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Charles Renner is Excellent. Dr. Renner has been reviewed by 13 patients who have provided 4 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.5
Promptness 4.6
Courteous Staff 4.9
Accurate Diagnosis 4.8
Bedside Manner 4.8
Spends Time with Me 5.0
Follows Up After Visit 4.4

Specialties & Research

Dr. Charles Renner, MD is board certified in Family Medicine.

Education & Awards

Dr. Renner graduated from Tufts University, Boston. He has 3 awards.

Patients' Choice Award (2010 - 2012, 2015)
Compassionate Doctor Recognition (2011 - 2012, 2015)
On-Time Doctor Award (2015)


Dr. Renner has 4 hospital affiliations:

  • John Muir Medical Center, Concord Campus 
  • John Muir Medical Center, Walnut Creek Campus 

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Additional Information
Dr. Charles Joseph Renner MD is a male Family Practitioner, has 24 years of experience and practices in Family Medicine.
Where does Dr. Charles J. Renner practice?
Dr. Charles Renner has 1 office location.
Dr. Charles Renner practices Family Medicine near Concord, CA.
See Concord Primary Care Doctors.