John M. Granger, MD

Infectious Diseases
Accepting new patients
Sees patients age 18 and up
LG Health Physicians Infectious Diseases
Schedule onlineCall 717-544-3517
Penn Medicine Provider

About me

My education and training

  • Medical School: Medical College of Ohio
  • Residency: Christiana Care Health System
  • Fellowship: MD Anderson Cancer Center

Spoken languages

English
English

Reviews

Average Rating

48 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.

Anonymous
June 2026
i believe dr. granger provides knowledgable, compassionate care.
Anonymous
June 2026
treating me well
Anonymous
June 2026
problem solved
Anonymous
May 2026
dr. john m. granger is truly one of the best doctors we have ever met. he guided us step by step in understanding and managing the illness in a simple, calm, and reassuring way. he listens carefully and patiently, gives patients the opportunity to fully express their concerns, and answers every question with honesty, compassion, and professionalism. we are deeply grateful for his kindness, knowledge, and dedication. thank you, doctor."

Insurance accepted

Please contact the practice and/or the member services department of your insurance company for specific details before receiving services. Providers may participate in some, but not all, products offered by a health plan; providers may also accept plans at some practice locations but not others.

Locations

Penn Medicine hospital privileges

  • Lancaster General Hospital: Has privileges to treat patients in the hospital.
Dr. Granger is a Penn Medicine Lancaster General Health physician.

Qualifications and experience

Treatments and conditions