Addiction Therapist

Mr. James Clark Gessner, ADDICTION SPECIALIST

7000 South Center Dr, Clearlake, California, 95422-7000

About Mr. James Clark Gessner

Mr. James Clark Gessner is a therapist based in Clearlake, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Mr. James Clark Gessner is G0402270902 for Addiction (Substance Use Disorder) Counselor in California. His current practice location is 7000 South Center Dr, Clearlake. Patients can reach him at 707-994-6414. Mr. James Clark Gessner is ADDICTION SPECIALIST in Addiction (Substance Use Disorder) Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1225199227.

Mr. James Clark Gessner 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

Mr. James Clark Gessner 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. James Clark Gessner
Specialization Addiction (Substance Use Disorder) Counselor
Credentials ADDICTION SPECIALIST
Gender Male
Practice Address: 7000 South Center Dr,
Clearlake, CA - 95422-7000

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 Number1225199227
NPI Enumeration Date: 13 Dec, 2006
NPI Last Update On: 08 Jul, 2007

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. James Clark Gessner are as mentioned below.

License NumberSpecializationStateStatus
G0402270902Addiction (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.

Mr. James Clark Gessner
9555 Chippewa Trail,
Kelseyville, CA - 95451-9555
Phone: 707-277-0881
Fax: 707-994-7164

Book an Appointment with Mr. James Clark Gessner

To schedule an appointment, contact Mr. James Clark Gessner at 7000 South Center Dr, Clearlake, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mr. James Clark Gessner:

James Clark Gessner 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, James Clark Gessner is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

James Clark Gessner practices at 7000 South Center Dr, Clearlake, California, 95422-7000.

To schedule an appointment with James Clark Gessner, please contact the office at 707-994-6414.

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