Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Katie Hoellwarth, PPSP
School Psychologist in Oakley, CA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013495969
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mrs. Katie Hoellwarth
Credential PPSP
Sex Female
Practice address 1141 Laurel Rd, Oakley, CA, 94561
Phone (925) 625-7090
Fax (925) 625-8300
Enumeration date Aug 2, 2018
Last updated in NPPES Aug 2, 2018
Taxonomy & licenses
103TS0200X School Psychologist Behavioral Health & Social Service Providers · License 150140781 (CA) Primary
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
Where does Katie Hoellwarth practice?
The practice location on file with NPPES is in Oakley, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Katie Hoellwarth?
The National Provider Identifier (NPI) for Katie Hoellwarth is 1013495969, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-02.