William Paul Greissinger, DO
Emergency Medicine Physician · Erie, PA
William Paul Greissinger, DO is an emergency medicine physician with a practice address in Erie, Pennsylvania, and NPI 1194700641, issued on Dec 7, 2005. Check the license (Pennsylvania OS008805L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Paul Greissinger
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- OS008805L PA
Self-reported in NPPES; status is on the state search - Practice location
- 4950 Buffalo RD, Erie, PA 16510
- Phone
- (814) 898-2576
- Enumerated
- Dec 7, 2005
- Record last updated
- Oct 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,911 in Pennsylvania → Look up another NPI →
Also registered at 4950 Buffalo RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jestin Carlson, M.D.Emergency Medicine Physician1164615175
- Caroline Colleran, D.O.Emergency Medicine Physician1033376553
- Marjorie Cua, M.D.Pediatrics Physician1487096152
- Kelsey Cunningham, CRNPFamily Nurse Practitioner1457996092
- Cynthia Dahlkemper, CRNPPrimary Care Nurse Practitioner1023277118
- Whitney Double, CRNPFamily Medicine Physician1669255899
Verify William Paul Greissinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS008805LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average emergency medicine physician in 2024
101 Medicare Part D claims for 73 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen21 claims
- Prednisone12 claims
- Cephalexin11 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: $118.63
2 payments; by number, the most common kind was education; the largest payer was Inari Medical, Inc. The 12,335 providers of this specialty with any payment received $953.79 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.
William Paul Greissinger among 3,911 emergency medicine physician records in Pennsylvania
William Paul Greissinger, DO 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2020 · 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).
120 emergency medicine physician records list a practice address in Erie
They are 120 of the 5,083 NPPES records with a practice address in Erie, and 3,911 emergency medicine physician records in Pennsylvania.
All 3,911 in Pennsylvania → Every provider in Erie → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jestin Carlson, M.D.Erie, PA 165101164615175
- Caroline Colleran, D.O.Erie, PA 165101033376553
- Alan GoffErie, PA 165101205280872
- Susan Robbins, DOErie, PA 165091023088226
- Mary Kozlowski, D.O.Erie, PA 165081972535888
- Zachary Miller, DOErie, PA 165081568193753
- Nancy Flynn-McGarvie, MDErie, PA 165061861447070
- Brandon Kramer, D.O.Erie, PA 165061871938498
Common questions
What is William Paul Greissinger, DO's NPI number?
William Paul Greissinger, DO's National Provider Identifier (NPI) is 1194700641, issued on Dec 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Paul Greissinger, DO located?
The NPPES record lists a practice address at 4950 Buffalo RD, Erie, PA, 16510. Phone: (814) 898-2576. Providers update this record themselves, so call before visiting.
How can I verify William Paul Greissinger, DO's license?
NPPES lists Pennsylvania license number OS008805L, 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 William Paul Greissinger, DO prescribe under Medicare Part D?
In 2024, William Paul Greissinger, DO had 101 Medicare Part D claims for 73 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.