Addiction Therapist

John Walter Marshall, SUDCC

4065 3rd Ave, San Diego, California, 92103-2184

About John Walter Marshall

John Walter Marshall is a therapist based in San Diego, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of John Walter Marshall is 12527 for Addiction (Substance Use Disorder) Counselor in California. His current practice location is 4065 3rd Ave, San Diego. Patients can reach him at 619-515-2545. John Walter Marshall is SUDCC in Addiction (Substance Use Disorder) Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1285394114.

John Walter Marshall 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

John Walter Marshall 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 John Walter Marshall
Specialization Addiction (Substance Use Disorder) Counselor
Credentials SUDCC
Gender Male
Practice Address: 4065 3rd Ave,
San Diego, CA - 92103-2184

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 Number1285394114
NPI Enumeration Date: 20 Dec, 2021
NPI Last Update On: 26 Feb, 2025

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 John Walter Marshall are as mentioned below.

License NumberSpecializationStateStatus
12527Addiction (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.

John Walter Marshall
6515 Glenroy St,
San Diego, CA - 92120-2715
Phone: 619-756-1537

Book an Appointment with John Walter Marshall

To schedule an appointment, contact John Walter Marshall at 4065 3rd Ave, San Diego, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about John Walter Marshall:

John Walter Marshall 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, John Walter Marshall is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

John Walter Marshall practices at 4065 3rd Ave, San Diego, California, 92103-2184.

To schedule an appointment with John Walter Marshall, please contact the office at 619-515-2545.

Reviews & Feedback

Have you visited John Walter Marshall? Share your experience to help others looking for a Addiction (Substance Use Disorder) Counselor in San Diego, CA.

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