Mark Enzerra
Physician Assistant · Horsham, PA
Mark Enzerra is a physician assistant with a practice address in Horsham, Pennsylvania, and NPI 1073823365, issued on Oct 20, 2010. Check the license (Pennsylvania MA053764, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Enzerra
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- MA053764 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Witmer RD, Horsham, PA 19044
- Phone
- (215) 442-5000
- Enumerated
- Oct 20, 2010
- Record last updated
- Mar 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110324000272); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 8,020 in Pennsylvania → Look up another NPI →
Also registered at 100 Witmer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Antonio Grasso, MDStudent in an Organized Health Care Education/Training Program1497930408
- Maria Hawkins, PA-CPhysician Assistant1447547823
- Bernadette Martini, PA-CPhysician Assistant1962711671
- Lauren Rengen, NP-CBasic Emergency Medical Technician1457687535
- Aradia Tabasko, MS, PA-CPhysician Assistant1487094967
- Lisa Zahn, M.D.Emergency Medicine Physician1376715375
Verify Mark Enzerra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license MA053764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average physician assistant in 2024
350 Medicare Part D claims for 253 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 21 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass35 claims
- Cephalexin35 claims
- Doxycycline Hyclate27 claims
- Methylprednisolone25 claims
- Oxycodone-Acetaminophen17 claims
- Etodolac14 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
- Fayette Physician Network IncUniontown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Enzerra among 8,020 physician assistant records in Pennsylvania
Mark Enzerra is one of 8,020 physician assistant records with a practice address in Pennsylvania. 80% 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 25% of them.
- NPI issued2010 · 25% of these records are older, 73% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2007 · median 2018 among the 5,313 with a school on file
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 physician assistant records list a practice address in Horsham
They are 12 of the 505 NPPES records with a practice address in Horsham, and 8,020 physician assistant records in Pennsylvania.
All 8,020 in Pennsylvania → Every provider in Horsham → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Danielle Bruno, PHYSICIAN ASSISTANTHorsham, PA 190441780229286
- Carmen Cheng, PA-CHorsham, PA 190441508322587
- Maria Hawkins, PA-CHorsham, PA 190441447547823
- Karim HemadyHorsham, PA 190441730544693
- Julie Killian, PAHorsham, PA 190441811817703
- Bernadette Martini, PA-CHorsham, PA 190441962711671
- Christopher Mathews, PAHorsham, PA 190441063196533
- Liza Steele, P.A.C.Horsham, PA 190441417003641
Common questions
What is Mark Enzerra's NPI number?
Mark Enzerra's National Provider Identifier (NPI) is 1073823365, issued on Oct 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mark Enzerra located?
The NPPES record lists a practice address at 100 Witmer RD, Horsham, PA, 19044. Phone: (215) 442-5000. Providers update this record themselves, so call before visiting.
How can I verify Mark Enzerra's license?
NPPES lists Pennsylvania license number MA053764, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Enzerra prescribe under Medicare Part D?
In 2024, Mark Enzerra had 350 Medicare Part D claims for 253 beneficiaries; the average among physician assistant prescribers was 830. 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.