Charles M. Defendorf, DO
Internal Medicine
Accepting new patients
Sees patients age 18 and up
Penn Princeton Primary Care Monroe
View 1 additional location
Schedule onlineCall 609-395-2470
Headshot of Charles M. Defendorf, DO
Penn Medicine Provider

About me

Education and training

  • Medical School: Rowan-Virtua School of Osteopathic Medicine
  • Residency: Hackensack University Medical Center
  • Residency: Bluefield Regional Medical Center

What my patients think about me

Average Rating

1120 reviews

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

February 2026
doctor defendorf has great bedtime manners and takes his time to percentage patients
February 2026
attentive, insightful
February 2026
he's smart, compassionate, he listens, and i know he has my best interests in mind. he takes time with me, and answers any questions. i would recommend him to anyone looking for a really good primary doc.
February 2026
i am very satisfied with dr. defendorf.

Insurance accepted

My Locations

Princeton Medicine Physicians - Family Medicine Monroe

Penn Medicine hospital privileges

  • Princeton Medical Center: On the medical staff, but does not have privileges to treat patients in the hospital.
Dr. Defendorf is a Penn Medicine physician. In New Jersey, providers are affiliated with Penn Medicine through Clinical Health Care Associates of New Jersey or Princeton Healthcare Affiliated Physicians, PC.

Qualifications and experience

Treatments and Conditions