John O. Allen, MD
Family Medicine
Accepting new patients
Sees patients of all ages
LG Health Physicians Family Medicine Strasburg
Penn Medicine Provider

About me

Education and training

  • Medical School: University of North Carolina Hospitals
  • Residency: Lancaster General Hospital

What my patients think about me

Average Rating

224 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.

December 2025
courtesy
December 2025
he's a very good doctor
December 2025
i just like him
December 2025
very pleased with dr allen

Insurance accepted

My Locations

Penn Medicine hospital privileges

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

Qualifications and experience

Treatments and Conditions