Cornerstone Day Treatment Program
Cornerstone Day Treatment Program is a healthcare organization registered as Preferred Provider Organization in Redwood Valley, CA, holding Type 2 (organization) NPI 1922207018 since 2007. The authorized official on file is Marsha Thatcher, Clinician.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1922207018 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Cornerstone Day Treatment Program |
| Practice address | 9551 N STATE ST, Redwood Valley, CA, 95470 |
| Phone | 7074851301 |
| Fax | 7074857944 |
| Enumeration date | 2007-07-17 |
| Last updated in NPPES | 2007-07-17 |
Authorized official
| Name | Marsha Thatcher |
|---|---|
| Title | Clinician |
| Phone | 7074851301 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 305R00000X | Preferred Provider Organization | Primary | — | — |
Copy-ready billing details
Provider: Cornerstone Day Treatment Program NPI: 1922207018 Taxonomy: 305R00000X (Preferred Provider Organization) Address: 9551 N STATE ST, Redwood Valley, CA, 95470
Verify this record
Cross-check NPI 1922207018 against the authoritative CMS record: view Cornerstone Day Treatment Program 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 Day Treatment Program?
Who is the authorized official for Cornerstone Day Treatment Program?
Source: CMS NPPES (public data). Snapshot 2026-07-09. Provider record last updated 2007-07-17.