Mark Francis Olaf, D.O.
Emergency Medicine Physician · Danville, PA
Mark Francis Olaf, D.O. is an emergency medicine physician with a practice address in Danville, Pennsylvania, and NPI 1407170087, issued on Mar 25, 2010. Check the license (Pennsylvania OS016014, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mark Francis Olaf
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- OS016014 PA
H0075563 MD
Self-reported in NPPES; status is on the state search - Practice location
- 100 N Academy Ave, Danville, PA 17822
- Phone
- (570) 271-6812
- Enumerated
- Mar 25, 2010
- Record last updated
- May 17, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (570) 271-6507
- Medicare enrollment
- Enrolled (PECOS I20120705000282); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2010
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,911 in Pennsylvania → Look up another NPI →
Also registered at 100 N Academy Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paige AaronStudent in an Organized Health Care Education/Training Program1730976218
- Zainab AbdulhuseinGeneral Practice Dentistry1851108419
- Kristin AblineRegistered Nurse1174368757
- Clara Abouelsaad, DOStudent in an Organized Health Care Education/Training Program1013610062
- Dana Achenbach, PHARMDPharmacist1528612975
- Maisa AdamAnatomic Pathology & Clinical Pathology Physician1568306512
Verify Mark Francis Olaf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016014Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average emergency medicine physician in 2024
13 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Geisinger ClinicDanville, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Francis Olaf among 3,911 emergency medicine physician records in Pennsylvania
Mark Francis Olaf, D.O. is one of 3,911 emergency medicine physician records with a practice address in Pennsylvania. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 46% of them.
- NPI issued2010 · 46% of these records are older, 51% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2010 · median 2013 among the 2,231 with a school on file
- Record last updated2016 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
81 emergency medicine physician records list a practice address in Danville
They are 81 of the 3,116 NPPES records with a practice address in Danville, and 3,911 emergency medicine physician records in Pennsylvania.
All 3,911 in Pennsylvania → Every provider in Danville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- David Dula, M.D.Danville, PA 178221447226436
- Christopher Exner, M.D.Danville, PA 178221003955741
- Michael Fitzpatrick, M.D.Danville, PA 178221629045687
- Robert Frankel, MDDanville, PA 178221205880978
- Douglas Kupas, M.D.Danville, PA 178221447210539
- Michael Leicht, M.D.Danville, PA 178221912968132
- John Maciejczyk, M.D.Danville, PA 178221639260102
- Erica McElroy, D.O.Danville, PA 178221578526133
Common questions
What is Mark Francis Olaf, D.O.'s NPI number?
Mark Francis Olaf, D.O.'s National Provider Identifier (NPI) is 1407170087, issued on Mar 25, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mark Francis Olaf, D.O. located?
The NPPES record lists a practice address at 100 N Academy Ave, Danville, PA, 17822. Phone: (570) 271-6812. Providers update this record themselves, so call before visiting.
How can I verify Mark Francis Olaf, D.O.'s license?
NPPES lists Pennsylvania license number OS016014, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Francis Olaf, D.O. prescribe under Medicare Part D?
In 2024, Mark Francis Olaf, D.O. had 13 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.