Addiction Therapist

Sean Sullivan

14715 E. Hwy 20, Clearlake Oaks, California, 95423

About Sean Sullivan

Sean Sullivan is a therapist based in Clearlake Oaks, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Sean Sullivan is 17429 for Addiction (Substance Use Disorder) Counselor in California. His current practice location is 14715 E. Hwy 20, Clearlake Oaks. Patients can reach him at 707-998-1800 or can fax him at 707-998-0122. Sean Sullivan NPI number (Unique professional ID assigned by NPPES) is 1356049191.

Sean Sullivan 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

Sean Sullivan 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 Sean Sullivan
Specialization Addiction (Substance Use Disorder) Counselor
Gender Male
Practice Address: 14715 E. Hwy 20,
Clearlake Oaks, CA - 95423
Fax 707-998-0122

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 Number1356049191
NPI Enumeration Date: 21 Feb, 2023
NPI Last Update On: 21 Feb, 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 Sean Sullivan are as mentioned below.

License NumberSpecializationStateStatus
17429Addiction (Substance Use Disorder) Counselor CaliforniaPrimary

Mailing Address

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

Sean Sullivan
Po Box 366,
Clearlake Oaks, CA - 95423-0366
Phone: 707-998-1800
Fax: 707-998-0122

Book an Appointment with Sean Sullivan

To schedule an appointment, contact Sean Sullivan at 14715 E. Hwy 20, Clearlake Oaks, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Sean Sullivan:

Sean Sullivan is a therapist specializing in Addiction (Substance Use Disorder) Counselor. He 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.

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

Sean Sullivan practices at 14715 E. Hwy 20, Clearlake Oaks, California, 95423.

To schedule an appointment with Sean Sullivan, please contact the office at 707-998-1800.

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