Doctor profile · Federal record

Dr. William Greissinger, DO

Emergency Medicine Physician · Erie, PA

  • NPI 1194700641
  • 21 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
4950 Buffalo RD
Erie, PA 165102304
(814) 898-2576
Additional location
232 W 25Th St
Erie, PA 165440002
(814) 452-5000
fax (814) 452-5442
Additional location
4247 W Ridge RD Ste 101
Erie, PA 165061746
(814) 835-2580

Credentials & registration

NPPES · NUCC
NPI registered
December 2005 — 21 yrs on file
Profile last updated
October 6, 2020
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Pennsylvania #OS008805L

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1194700641. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
334
Distinct HCPCS
3
Medicare allowed
$55,233
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 220 209 $164
99291 Critical care, first 30-74 minutes 66 65 $204
99284 Emergency department visit with moderate level of medical decision making 48 46 $118

In context: peer comparison

Among 43 peers in this city , average services per provider: 98. This provider delivers 3.4× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$119
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Inari Medical, Inc. 1 $98.63
CSL Behring 1 $20.00

By nature of payment

Food and Beverage
$99
Education
$20

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
33
Patients
32
Total drug cost
$174
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 19 19 $79
Cephalexin Generic 14 13 $95

Frequently asked questions

Auto-generated from federal data
What is Dr. William Greissinger's medical specialty?
Dr. William Greissinger practices Emergency Medicine Physician in Erie, PA.
Where does Dr. William Greissinger practice?
Dr. William Greissinger practices at 4950 Buffalo RD, Erie, PA 165102304. Office phone: 8148982576.
What is Dr. William Greissinger's NPI?
Dr. William Greissinger's National Provider Identifier (NPI) is 1194700641, issued by NPPES.
What procedures does Dr. William Greissinger commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.