Cornerstone Physical Therapy
Cornerstone Physical Therapy is a healthcare organization registered as Physical Therapist in Williston, VT, holding Type 2 (organization) NPI 1821161720 since 2006. The authorized official on file is Ryan Allendorf, Office Manager.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821161720 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Cornerstone Physical Therapy |
| Practice address | 277 BLAIR PARK RD, SUITE 110, Williston, VT, 05495 |
| Phone | 8028783600 |
| Fax | 8028793041 |
| Enumeration date | 2006-11-16 |
| Last updated in NPPES | 2013-04-16 |
Authorized official
| Name | Ryan Allendorf |
|---|---|
| Title | Office Manager |
| Phone | 8028783600 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 225100000X | Physical Therapist | Primary | — | — |
Copy-ready billing details
Provider: Cornerstone Physical Therapy NPI: 1821161720 Taxonomy: 225100000X (Physical Therapist) Address: 277 BLAIR PARK RD, SUITE 110, Williston, VT, 05495
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1861422735 | Caroline Tassey | Individual | Psychiatric/Mental Health Nurse Practitioner | Williston, VT |
| 1902035116 | Wendy Friant | Individual | Physical Therapist | Williston, VT |
| 1992052047 | Sarah Maas | Individual | Clinical Psychologist | Williston, VT |
| 1578960753 | Nash Psychological Services, LLC | Organization | Clinical Psychologist | Williston, VT |
Verify this record
Cross-check NPI 1821161720 against the authoritative CMS record: view Cornerstone Physical Therapy on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
What is the NPI number for Cornerstone Physical Therapy?
Who is the authorized official for Cornerstone Physical Therapy?
Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2013-04-16.