Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark Mahan, DO

Individual provider Surgery Physician · NPI 1841730496

Mark Mahan, DO is a General Surgery in Danville, Pennsylvania. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 2017, 9 years ago. Practices with Geisinger Clinic, a 3,413-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
9
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
PA
In the registry since
2017
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

100 N Academy Ave
Danville, PA 17822-9800
Phone: (570) 271-6361
Fax: (570) 271-5785
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence OS022147 (PA)
Surgery Physician Taxonomy 208600000X · Licence OT017673 (PA)

Record details

NPI number1841730496
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 1, 2017
Last updated in NPPESJuly 27, 2022
Certification dateJuly 27, 2022
Mailing address100 N Academy Ave, Danville, PA 17822-4903

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 2017 (9 years in practice)
Group practice Geisinger Clinic — 3413 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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