Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Chanda Rankin, PHD
Psychologist in Petaluma, CA · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689138299
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Registry record
Entity type Individual (Type 1)
Name Chanda Rankin
Credential PHD
Sex Female
Practice address 7 4th St Ste 52, Petaluma, CA, 94952
Phone (310) 980-9163
Enumeration date Jan 28, 2019
Last updated in NPPES Nov 15, 2019
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Chanda Rankin?
Chanda Rankin is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-15.