Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Stacey Su-Chio Peak, PSY.D.
Clinical Psychologist in Tracy, CA · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881119113
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Registry record
Entity type Individual (Type 1)
Name Stacey Su-Chio Peak
Credential PSY.D.
Sex Female
Practice address 35 E 10th St Ste E3, Tracy, CA, 95376
Phone (209) 210-2906
Enumeration date Aug 8, 2017
Last updated in NPPES May 7, 2024
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY32621 (CA) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD 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 Stacey Peak?
Stacey Peak is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-07.