Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William P Arsenault, EMTP
Paramedic in Boise, ID · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558509570
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name William P Arsenault
Credential EMTP
Sex Male
Practice address 4850 N Rosepoint Way, Suite 100, Boise, ID, 83713
Phone (208) 939-2100
Fax (208) 939-4411
Enumeration date Jan 29, 2009
Last updated in NPPES Jan 29, 2009
Taxonomy & licenses
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for William Arsenault?
The National Provider Identifier (NPI) for William Arsenault is 1558509570, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Arsenault practice?
The practice location on file with NPPES is in Boise, ID. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Tom Faciszewski Orthopaedic Surgery Physician · Boise, ID NPI 1992817167 Richard Radnovich Sports Medicine (Family Medicine) Physician · Boise, ID NPI 1407944655 Richard Radnovich Do PC Sports Medicine (Family Medicine) Physician · Boise, ID NPI 1417143926 Injury Care Emergency Medical Services Land Ambulance · Boise, ID NPI 1093952947
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-29.