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

Dr. Mark Francis Olaf, DO

Individual provider Emergency Medicine Physician · NPI 1407170087

Dr. Mark Francis Olaf, DO is an Emergency Medicine in Danville, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 2010, 16 years ago. Practices with Geisinger Clinic, a 3,413-clinician group and accepts Medicare assignment. Licensed in Maryland and Pennsylvania.

Years since qualifying
16
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
MD, PA
In the registry since
2010
Specialties on file
3
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.

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Practice location Address checks out

100 N Academy Ave
Danville, PA 17822-2005
Phone: (570) 271-6812
Fax: (570) 271-6507
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence OS016014 (PA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence H0075563 (MD)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1407170087
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 25, 2010
Last updated in NPPESMay 17, 2016
Mailing address100 N Academy Ave, Danville, PA 17822-4903

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2010 (16 years in practice)
Group practice Geisinger Clinic — 3413 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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