Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. John L Prinzivalli, P.T.
Physical Therapist in Amherst, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942264064
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Registry record
Entity type Individual (Type 1)
Name Mr. John L Prinzivalli
Credential P.T.
Sex Male
Practice address 31 Hall Dr, Amherst, MA, 01002
Phone (413) 256-8561
Fax (866) 644-0869
Enumeration date Apr 14, 2006
Last updated in NPPES Dec 13, 2023
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 7665 (MA) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation.
About the PT credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 626166 | Other | MA | HARVARD PILGRIM HEALTHCAR |
| 712451 | Other | MA | CONNECTICARE |
| Y67776 | Other | MA | BLUE CROSS BLUE SHIELD |
| 650020185 | Other | MA | RAILROAD MEDICARE |
| 2329180 | Other | MA | AETNA US HEALTHCARE |
| 0399329 | Medicaid | MA | - |
| 24189 | Other | MA | HEALTH NEW ENGLAND |
| 408459 | Other | MA | TUFTS HEALTH PLAN |
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
How do I verify John Prinzivalli's NPI record?
Cross-check NPI 1942264064 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1942264064 active?
Yes, as of the latest NPPES snapshot, NPI 1942264064 is active (record last updated 2023-12-13).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-13.