Dr. Nancy C Case, PHD
Dr. Nancy C Case is a Psychologist provider (Psychologist) practicing in Mill Valley, CA, registered in the NPPES registry with NPI 1629051271 since 2005. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1629051271 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Nancy C Case |
| Credential | PHD |
| Sex | Female |
| Practice address | 10 WILLOW ST, #1, Mill Valley, CA, 94941 |
| Phone | 4154544326 |
| Fax | 4153898719 |
| Enumeration date | 2005-11-28 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Primary | PSY6224 | CA |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Copy-ready billing details
Provider: Nancy Case, PHD NPI: 1629051271 Taxonomy: 103T00000X (Psychologist) Address: 10 WILLOW ST, #1, Mill Valley, CA, 94941
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1801091319 | Barbara Nelson | Individual | Marriage & Family Therapist | Mill Valley, CA |
| 1124269972 | Patricia Holden | Individual | Marriage & Family Therapist | Mill Valley, CA |
| 1588011845 | Cooper Differding | Individual | Dentist | Mill Valley, CA |
Verify this record
Cross-check NPI 1629051271 against the authoritative CMS record: view Dr. Nancy C Case 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 2007-07-08.