Quick answers
- Which hospitals does Mark F. Olaf work at?
- Medicare's official clinician data lists Mark F. Olaf at 1 hospital: Geisinger Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark F. Olaf see patients?
- Medicare's clinician data lists 2 practice locations, including Danville, PA and Jersey Shore, PA. Call before your visit to confirm the address.
- What is Mark F. Olaf's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Mark F. Olaf accept Medicare assignment?
- Yes. Medicare's clinician data says Mark F. Olaf accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is Mark F. Olaf's NPI number?
- 1407170087. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark F. Olaf works
Medicare's Facility Affiliation Data lists Mark F. Olaf at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Geisinger Medical CenterDanville, PA · Acute Care Hospital · CCN 390006
Practice locations
Addresses where Mark F. Olaf is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 N Academy AveDanville, PA 17822
- 1020 Thompson StJersey Shore, PA 17740
Group practices
Medicare enrollment lists Mark F. Olaf as a member of this group (CMS data updated 2026-10-02).
- Geisinger Clinic3,467 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Danville
Clinicians with the same Medicare primary specialty in Danville, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407170087 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians