David Matthew Ermak, D.O.
Neurology Physician · Danville, PA
David Matthew Ermak, D.O. is a neurology physician with a practice address in Danville, Pennsylvania, and NPI 1689816787, issued on Apr 3, 2009. Check the license (Pennsylvania OS016438, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- David Matthew Ermak
- Credential
- D.O.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- OS016438 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 N Academy Ave, Danville, PA 17822
- Phone
- (570) 271-6472
- Enumerated
- Apr 3, 2009
- Record last updated
- Nov 11, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140925001106); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2009
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,077 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 David Matthew Ermak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016438Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average neurology physician in 2024
17 Medicare Part D claims, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 71% of claims.
Most prescribed
- Eliquis12 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.
Industry payments in 2024: $104.90
1 payment: food and beverage; the largest payer was Janssen Scientific Affairs, LLC. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
David Matthew Ermak among 1,077 neurology physician records in Pennsylvania
David Matthew Ermak, D.O. is one of 1,077 neurology physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 50% of them.
- NPI issued2009 · 50% of these records are older, 47% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2009 · median 2007 among the 727 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 neurology physician records list a practice address in Danville
They are 32 of the 3,116 NPPES records with a practice address in Danville, and 1,077 neurology physician records in Pennsylvania.
All 1,077 in Pennsylvania → Every provider in Danville → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Jose Avila, M.D.Danville, PA 178221639481872
- Kelly Baldwin, MDDanville, PA 178221467695437
- John Carlson, M.D.Danville, PA 178221164497970
- Justin Chandler, MDDanville, PA 178221750657599
- Scott Friedenberg, M.D.Danville, PA 178221811964893
- Barbara Graves, D.ODanville, PA 178221174821276
- Scott M. Jeffries, M.D.Danville, PA 178221659524387
- Anthony Noto, M.D.Danville, PA 178221518256536
Common questions
What is David Matthew Ermak, D.O.'s NPI number?
David Matthew Ermak, D.O.'s National Provider Identifier (NPI) is 1689816787, issued on Apr 3, 2009. An NPI identifies a provider in billing; it is not a license.
Where is David Matthew Ermak, D.O. located?
The NPPES record lists a practice address at 100 N Academy Ave, Danville, PA, 17822. Phone: (570) 271-6472. Providers update this record themselves, so call before visiting.
How can I verify David Matthew Ermak, D.O.'s license?
NPPES lists Pennsylvania license number OS016438, 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 David Matthew Ermak, D.O. prescribe under Medicare Part D?
In 2024, David Matthew Ermak, D.O. had 17 Medicare Part D claims; the average among neurology physician prescribers was 1,370. 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.