Individual provider · Type 1 NPI

William Patrick Callahan

Mental Health Counselor · Orange, CA

NPI number 1194292318 Active

Practice location

1855 W Katella Ave Ste 150
Orange, CA 92867-3432

Fax (714) 399-3481

Mailing address

1646 Cabrillo Ave # 203
Torrance, CA 90501-2819

Specialties and licenses

TaxonomyCodeLicense
Mental Health Counselor Primary 101YM0800XNone listed

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About NPI 1194292318

William Patrick Callahan's National Provider Identifier is 1194292318, issued on Oct 25, 2018. The primary taxonomy on file is Mental Health Counselor (101YM0800X), and the practice location is in Orange, CA. The record was last updated on Sep 29, 2026.