Mark Fennema
Emergency Medicine Physician · Pittsburgh, PA
Mark Fennema is an emergency medicine physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1841249786, issued on May 8, 2006. Check the license (Pennsylvania OS007405E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mark Fennema
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- OS007405E PA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Bower Hill RD, Pittsburgh, PA 15243
- Phone
- (412) 942-4000
- Enumerated
- May 8, 2006
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041123000385); accepts Medicare assignment
- Medical or professional school
- Oklahoma State University College Of Osteopathic Medicine, 1982
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,911 in Pennsylvania → Look up another NPI →
Also registered at 1000 Bower Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronald AielloEmergency Medicine Physician1922064617
- Jason Andrus, M.D.Diagnostic Radiology Physician1083875991
- Nikki Antoszewski, PA-CPhysician Assistant1649555350
- Kavya ArvindStudent in an Organized Health Care Education/Training Program1225968126
- Aniket Asees, BAStudent in an Organized Health Care Education/Training Program1063201549
- Ashley AshaoluCertified Registered Nurse Anesthetist1124575782
Verify Mark Fennema in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS007405ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% more Medicare Part D claims than the average emergency medicine physician in 2024
331 Medicare Part D claims for 234 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 73 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen64 claims
- Prednisone59 claims
- Ondansetron Hcl29 claims
- Meclizine Hcl20 claims
- Albuterol Sulfate Hfa19 claims
- Amoxicillin-Clavulanate Potass17 claims
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
- University OF Pittsburgh PhysiciansPittsburgh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Fennema among 3,911 emergency medicine physician records in Pennsylvania
Mark Fennema 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 69% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1982 · median 2013 among the 2,231 with a school on file
- Record last updated2021 · 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).
424 emergency medicine physician records list a practice address in Pittsburgh
They are 424 of the 28,866 NPPES records with a practice address in Pittsburgh, and 3,911 emergency medicine physician records in Pennsylvania.
All 3,911 in Pennsylvania → Every provider in Pittsburgh → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ronald AielloPittsburgh, PA 152431922064617
- Jason Biggs, M.D.Pittsburgh, PA 152431619162682
- Laura Brookfield, MDPittsburgh, PA 152431386682334
- Emily BrownPittsburgh, PA 152431699975391
- Percy ChiuPittsburgh, PA 152431306862487
- Lawrence Crochier, MDPittsburgh, PA 152431750329207
- Ralph Falbo, MDPittsburgh, PA 152431366491250
- Kevin Friend, MDPittsburgh, PA 152431891745121
Common questions
What is Mark Fennema's NPI number?
Mark Fennema's National Provider Identifier (NPI) is 1841249786, issued on May 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Fennema located?
The NPPES record lists a practice address at 1000 Bower Hill RD, Pittsburgh, PA, 15243. Phone: (412) 942-4000. Providers update this record themselves, so call before visiting.
How can I verify Mark Fennema's license?
NPPES lists Pennsylvania license number OS007405E, 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 Fennema prescribe under Medicare Part D?
In 2024, Mark Fennema had 331 Medicare Part D claims for 234 beneficiaries; 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.