Mental Health Therapist

Mr. William Patrick Callahan

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

About Mr. William Patrick Callahan

Mr. William Patrick Callahan is a therapist based in Orange, California who is specialized in Mental Health Counselor. His current practice location is 1855 W Katella Ave Ste 150, Orange. Patients can reach him at 714-399-3480 or can fax him at 714-399-3481. Mr. William Patrick Callahan NPI number (Unique professional ID assigned by NPPES) is 1194292318.

Mr. William Patrick Callahan is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. He assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.

Practice Information

Mr. William Patrick Callahan speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Mr. William Patrick Callahan
Specialization Mental Health Counselor
Gender Male
Practice Address: 1855 W Katella Ave Ste 150,
Orange, CA - 92867-3432
Fax 714-399-3481

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1194292318
NPI Enumeration Date: 25 Oct, 2018
NPI Last Update On: 03 Feb, 2022

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Mr. William Patrick Callahan are as mentioned below.

License NumberSpecializationStateStatus
Mental Health Counselor CaliforniaPrimary

Other Medical Identifiers

Other legacy medical identifiers associated with Mr. William Patrick Callahan such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
913744300FOtherCaliforniaMEDI-CAL

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Mr. William Patrick Callahan
1646 Cabrillo Ave # 203,
Torrance, CA - 90501-2819
Phone: 310-227-4885

Book an Appointment with Mr. William Patrick Callahan

To schedule an appointment, contact Mr. William Patrick Callahan at 1855 W Katella Ave Ste 150, Orange, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mr. William Patrick Callahan:

William Patrick Callahan is a therapist specializing in Mental Health Counselor. He is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. He assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.

Yes, William Patrick Callahan is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

William Patrick Callahan practices at 1855 W Katella Ave Ste 150, Orange, California, 92867-3432.

To schedule an appointment with William Patrick Callahan, please contact the office at 714-399-3480.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.