Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark W Wrathall, PSY.D.
Clinical Psychologist in Corona, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043400518
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark W Wrathall
Credential PSY.D.
Sex Male
Practice address 16756 Chino Corona Rd, Corona, CA, 92880
Phone (909) 597-1771
Enumeration date Jul 31, 2007
Last updated in NPPES Jul 31, 2007
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY20023 (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
What specialty is Mark Wrathall?
Mark Wrathall 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.
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.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-31.