Summary

Dr. John Messmer has practiced family medicine and geriatric medicine for 49 years and is affiliated with Penn State Health Milton S. Hershey Medical Center. He treats Alzheimer's disease, dementia, and cognitive impairment, and performs physical therapy, strength training, and occupational therapy. He speaks Chinese, English, French, and Spanish.

Dr. Messmer earned his medical degree from Pennsylvania State University College of Medicine and completed his residency at the United States Naval Medical Center. He sees patients in Palmyra, Pennsylvania. Patients on Vitals rate Dr. Messmer 5 out of 5.

Overview based on verified provider data

Quick Facts

  • 5
  • 49 years of experience
  • 29 insurance plans accepted
  • speaks Chinese, English, French, Spanish
  • United States Naval Medical Center
  • 1 written review
  • 2 specialties
  • 9 areas of expertise
  • 1 hospital affiliation
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. John Joseph Messmer has 4 locations

Penn State Health Medical Group

941 Park DrPalmyra, PA 17078
Mon8:00 am - 4:30 pm
Tue7:00 am - 4:30 pm
Wed7:00 am - 4:30 pm
Thu7:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

Pennstate Hershey Childrens Hospital

600 University DrHershey, PA 17033

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Dr. John Joseph Messmer III, MDDr. Shakeilla Smithbey, MDHelix Virtual CareNicole Baldwin, APRN, FNP-BC
Family MedicineFamily MedicineFamily MedicineFamily Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
5 
5 
0 
4.2 
49 Years of Experience 15 Years of Experience 8 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Chinese, English, French, Spanish Speaks English Speaks English
Palmyra , PAHouston , TXBoca Raton , FLOrlando , FL
Med School: Pennsylvania State University College Of Medicine Med School: Howard University College Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Joseph Messmer

  • AARP
  • Aetna
  • Aetna - Medicare
  • AmeriHealth
  • AmeriHealth - Medicaid (Managed)
  • AmeriHealth Caritas - Medicaid (Managed)
  • Blue Cross Blue Shield
  • Capital Blue Cross
  • CareSource
  • Gateway Health
  • Gateway Health - Medicaid
  • Gateway Health - Medicaid (Managed)
  • Gateway Health - Medicare
  • GEHA
  • HealthPartners
  • HealthPartners - Medicaid (Managed)
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Medicaid
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Meritain Health
  • MVP Health Care
  • UnitedHealthcare
  • UnitedHealthcare - Medicare
  • UPMC Health Plan
  • UPMC Health Plan - Medicaid (Managed)

Medical Specialties

Dr. John Joseph Messmer has the following 2 specialties

Specialty Expertise

Dr. John Joseph Messmer has the following 9 areas of expertise

  • Alzheimer's Disease
  • Check-up
  • Contraception
  • Family Planning
  • Geriatric Medicine
  • Immunization
  • Influenza
  • Weight Loss
  • Weight Loss (non-surgical)

Certifications, License, & Education

49 Years Experience

Dr. John Joseph Messmer holds an active medical license in the state of Pennsylvania.

Medical License

Medical Doctor with an active medical license in the state of Pennsylvania that expires in 2026.

Education & Training

Residency

Completed their residency at United States Naval Medical Center.

Medical School

Graduated from Pennsylvania State University College Of Medicine in 1977.

NPI Number

Dr. Messmer's NPI number is 1669437414.

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Frequently Asked Questions

How can I make an appointment with Dr. John Messmer?
You can find contact information for Dr. John Messmer here on Vitals.
What languages does Dr. John Messmer speak?
Dr. John Messmer speaks Chinese, English, French, and Spanish.
Does Dr. John Messmer accept virtual/telehealth appointments?
Dr. John Messmer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. John Messmer's office located?
Dr. John Messmer's office is located at 941 Park Dr, Palmyra, PA, 17078.
Which hospitals is Dr. John Messmer affiliated with?
Dr. John Messmer is affiliated with Penn State Health Milton S Hershey Medical Center.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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