Katharine Costello, LMFT

NPI 1457269508 · on the registry since 2026 · sole proprietor

Practice

Address: 232 W Main St Ste 103
Tustin, CA 92780
Phone: (714) 584-9345
Organisation at this address: Van T Nguyen
Weisenburger Inc.
Courtney Shen Psychology, Inc.
Growing Sideways Counseling Inc
Inferred from a shared address, not stated in the registry.
Clinicians at this address: 10

Registry record

Primary taxonomy: 106H00000X
106H00000X
Licence states on file: CA
From the registry's licence fields, which are often incomplete.
Sex: Female
Record last updated: 2026-08-31

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California