John Walter Marshall
SUDCC | Addiction (Substance Use Disorder) Counselor
4065 3rd Ave, San Diego
California, 92103-2184
619-515-2545 Maps & DirectionsJohn Walter Marshall is a San Diego, California based counselor who is specialized as 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 book an appointment with him at 619-515-2545.
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.
Complete Profile:
John Walter Marshall speciality, credentials, practice address, contact phone number and fax are as below.
Patients can directly walk in or can call on the below given phone number for appointment.
| Name: | John Walter Marshall |
| Specialization: | Addiction (Substance Use Disorder) Counselor |
| Gender: | Male |
| Credentials: | SUDCC |
| Accepts Medicare Assignment: | No |
| Practice Address: | 4065 3rd Ave, San Diego,
California, 92103-2184 |
| Phone: | 619-515-2545 |
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 Number: | 1285394114 |
| NPI Enumeration Date: | 20 Dec, 2021 |
| NPI Last Update On: | 26 Feb, 2025 |
Medical Licenses:
Doctors can have 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 Number | Specialization | State | Status | |
| 12527 | Addiction (Substance Use Disorder) Counselor | California | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | 6515 Glenroy St,
San Diego, California |
| Zip: | 92120-2715 |
| Phone Number: | 619-756-1537 |
Patients can reach John Walter Marshall at
4065 3rd Ave, San Diego, California or can
call to book an appointment on 619-515-2545.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 09 February, 2026.