Summary

Dr. Mark Diehl is a rheumatologist with 28 years of experience treating conditions affecting the joints, muscles, and connective tissues. He earned his medical degree from Philadelphia College of Osteopathic Medicine and completed his residency training at UPMC Pinnacle Community Osteopathic Hospital, finishing in 2005. Dr. Diehl then pursued fellowship training in rheumatology at Geisinger Medical Center, completing his specialized training in 2008. He speaks both English and German with his patients.

Dr. Diehl practices at WellSpan Rheumatology locations in Gettysburg and Shippensburg, Pennsylvania, and maintains hospital privileges at WellSpan York Hospital. His expertise focuses on managing hand pain and joint stiffness, along with complex autoimmune conditions like rheumatoid arthritis. He incorporates comprehensive treatment approaches including physical therapy, strength training, and occupational therapy to help patients maintain mobility and function. Patients have given him an average rating of 3.6 out of 5 on Vitals.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.6
  • 28 years of experience
  • 28 insurance plans accepted
  • speaks English, German
  • Geisinger Medical Center
  • 13 written reviews
  • 1 specialty
  • 9 areas of expertise
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Spent time with me
  • Flexible scheduling

Office Locations

Mark P Diehl has 2 locations

WellSpan Rheumatology - Gettysburg

40 V Twin DrGettysburg, PA 17325
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

WellSpan Rheumatology - Shippensburg

97 Progress BlvdShippensburg, PA 17257
MonClosed
Tue8:00 am - 5:00 pm
WedClosed
Thu8:00 am - 5:00 pm
FriClosed
SatClosed
SunClosed

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Mark P Diehl, DOAlexander Orlando Richard UrzuaDr. David Elliot Zickafoose, MDDr. Alan David Roumm, MD
RheumatologyAddiction MedicineInternal MedicineRheumatology
Accepts New Patients Accepts New Patients Accepts New Patients
3.6 
3.8 
4.1 
28 Years of Experience 67 Years of Experience 63 Years of Experience 49 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, German Speaks English, Spanish Speaks English
Gettysburg , PAPEMBROKE PINES , FLHanover , PAHarrisburg , PA
Med School: Philadelphia College of Osteopathic Medicine Med School: University Central Del Caribe School Of Medicine Med School: University Of Florida College Of Medicine Med School: Sidney Kimmel Medical College At Thomas Jefferson University
Current Profile
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Insurance Plans Accepted by Mark P Diehl

  • Aetna
  • AmeriHealth
  • AmeriHealth - Medicaid (Managed)
  • AmeriHealth - Medicare (Advantage HMO)
  • AmeriHealth Caritas
  • AmeriHealth Caritas - Medicaid (Managed)
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - Federal Employees Program
  • Blue Cross Blue Shield - PPO
  • Capital Blue Cross
  • CareFirst BlueCross BlueShield
  • Cigna
  • Gateway Health
  • Gateway Health - Medicare
  • GEHA
  • HealthPartners
  • HealthPartners - Medicaid (Managed)
  • Humana
  • Johns Hopkins Employer Health Programs - Medicare (Advantage HMO)
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Meritain Health
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UPMC Health Plan

Medical Specialties

Mark P Diehl has the following specialty

Specialty Expertise

Mark P Diehl has the following 9 areas of expertise

  • Gout
  • Hip Osteoarthritis
  • Lupus
  • Osteoarthritis
  • Osteoarthritis (Hand and Wrist)
  • Osteoporosis
  • Rheumatic Diseases
  • Rheumatoid Arthritis
  • Tendinitis

Certifications, License, & Education

28 Years Experience

Mark P Diehl holds an active medical license in the state of Pennsylvania.

Medical License

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

Education & Training

Fellowship

Completed their fellowship at Geisinger Medical Center in 2008.

Residency

Completed their residency at UPMC Pinnacle Community Osteopathic Hospital in 2005 and UPMC Pinnacle Community Osteopathic Hospital in 2003.

Medical School

Graduated from Philadelphia College of Osteopathic Medicine in 2002 and Westminster College in 1998.

NPI Number

Mark P Diehl's NPI number is 1982667754.

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Frequently Asked Questions

Which hospitals is Mark Diehl affiliated with?
Mark Diehl is affiliated with Wellspan York Hospital.
Does Mark Diehl accept my insurance?
You can see the insurance plans that Mark Diehl accepts on their Vitals profile.
Where is Mark Diehl's office located?
Mark Diehl's office is located at 40 V Twin Dr, Gettysburg, PA, 17325.
Is Mark Diehl accepting new patients?
Mark Diehl is accepting new patients on Vitals. View Mark Diehl's profile on Vitals to make an appointment.
Does Mark Diehl accept virtual/telehealth appointments?
Mark Diehl has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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