Corby S. Kessler, M.D., Inc
Corby S. Kessler, M.D., Inc is a healthcare organization registered as Medical Specialty Clinic/Center in Napa, CA, holding Type 2 (organization) NPI 1669800405 since 2013. The authorized official on file is Michele Castagnola, Office Manager.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1669800405 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Corby S. Kessler, M.D., Inc |
| Practice address | 935 TRANCAS ST STE 1B, Napa, CA, 94558 |
| Phone | 7072556115 |
| Fax | 7072556613 |
| Enumeration date | 2013-10-14 |
| Last updated in NPPES | 2013-10-14 |
Authorized official
| Name | Michele Castagnola |
|---|---|
| Title | Office Manager |
| Phone | 7072556115 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 261QM2500X | Medical Specialty Clinic/Center | Primary | G76902 | CA |
Copy-ready billing details
Provider: Corby S. Kessler, M.D., Inc NPI: 1669800405 Taxonomy: 261QM2500X (Medical Specialty Clinic/Center) Address: 935 TRANCAS ST STE 1B, Napa, CA, 94558
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1548272404 | Janet Cain | Individual | Psychologist | Napa, CA |
Verify this record
Cross-check NPI 1669800405 against the authoritative CMS record: view Corby S. Kessler, M.D., Inc 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-10-14.