Addiction Therapist

William Larkin, LCSW

4045 Bayberry Dr, Chino Hills, California, 91709-3311

About William Larkin

William Larkin is a therapist based in Chino Hills, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of William Larkin is 118024 for Social Worker in California. His current practice location is 4045 Bayberry Dr, Chino Hills. Patients can reach him at 909-680-8161. William Larkin is LCSW in Addiction (Substance Use Disorder) Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1629559299.

William Larkin is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his clients by manage and overcome the psychological, emotional, and behavioral challenges related to substance use. Counselors also work closely with families and support systems to help them better understand their loved one’s illness. SUD counselors help to promote long-term sobriety, emotional stability, and overall mental wellness for both the individual and their family.

Practice Information

William Larkin 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 William Larkin
Specialization Addiction (Substance Use Disorder) Counselor
Credentials LCSW
Gender Male
Practice Address: 4045 Bayberry Dr,
Chino Hills, CA - 91709-3311

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 Number1629559299
NPI Enumeration Date: 22 Aug, 2018
NPI Last Update On: 04 Oct, 2023

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 William Larkin are as mentioned below.

License NumberSpecializationStateStatus
118024Social Worker CaliforniaPrimary
Addiction (Substance Use Disorder) Counselor Secondary

Mailing Address

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

William Larkin
4045 Bayberry Dr,
Chino Hills, CA - 91709-3311
Phone: 909-680-8161

Book an Appointment with William Larkin

To schedule an appointment, contact William Larkin at 4045 Bayberry Dr, Chino Hills, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William Larkin:

William Larkin is a therapist specializing in Social Worker. He A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

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

William Larkin practices at 4045 Bayberry Dr, Chino Hills, California, 91709-3311.

To schedule an appointment with William Larkin, please contact the office at 909-680-8161.

Reviews & Feedback

Have you visited William Larkin? Share your experience to help others looking for a Addiction (Substance Use Disorder) Counselor in Chino Hills, CA.

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