Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Nancy C Case, PHD
Psychologist in Mill Valley, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629051271
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Registry record
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 (415) 454-4326
Fax (415) 389-8719
Enumeration date Nov 28, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
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.
Frequently asked questions
Is NPI 1629051271 active?
Yes, as of the latest NPPES snapshot, NPI 1629051271 is active (record last updated 2007-07-08).
How do I verify Nancy Case's NPI record?
Cross-check NPI 1629051271 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.