Cornerstone First Assisting
Cornerstone First Assisting is a healthcare organization registered as Surgical Physician Assistant in Lake St Louis, MO, holding Type 2 (organization) NPI 1427441492 since 2015. The authorized official on file is Saraya Guariglia, Surgical First Assistant.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1427441492 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Cornerstone First Assisting |
| Practice address | 267 COUNTRYSHIRE DR, Lake St Louis, MO, 63367 |
| Phone | 6363451305 |
| Enumeration date | 2015-03-14 |
| Last updated in NPPES | 2015-03-20 |
Authorized official
| Name | Saraya Guariglia |
|---|---|
| Title | Surgical First Assistant |
| Phone | 6363451305 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 363AS0400X | Surgical Physician Assistant | Primary | — | — |
Copy-ready billing details
Provider: Cornerstone First Assisting NPI: 1427441492 Taxonomy: 363AS0400X (Surgical Physician Assistant) Address: 267 COUNTRYSHIRE DR, Lake St Louis, MO, 63367
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1033503701 | Saraya Guariglia | Individual | Surgical Physician Assistant | Lake St Louis, MO |
Verify this record
Cross-check NPI 1427441492 against the authoritative CMS record: view Cornerstone First Assisting 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 First Assisting?
Who is the authorized official for Cornerstone First Assisting?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-03-20.