Addiction Therapist

James Donald Williamson

301 Grand Ave Ste 301, South San Francisco, California, 94080-3641

About James Donald Williamson

James Donald Williamson is a therapist based in South San Francisco, California who is specialized in Addiction (Substance Use Disorder) Counselor. His current practice location is 301 Grand Ave Ste 301, South San Francisco. Patients can reach him at 650-244-1447 or can fax him at 650-244-1447. James Donald Williamson NPI number (Unique professional ID assigned by NPPES) is 1174934012.

James Donald Williamson 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

James Donald Williamson 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 James Donald Williamson
Specialization Addiction (Substance Use Disorder) Counselor
Gender Male
Practice Address: 301 Grand Ave Ste 301,
South San Francisco, CA - 94080-3641
Fax 650-244-1447

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 Number1174934012
NPI Enumeration Date: 14 May, 2014
NPI Last Update On: 14 May, 2014

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 James Donald Williamson are as mentioned below.

License NumberSpecializationStateStatus
Addiction (Substance Use Disorder) Counselor Primary

Other Medical Identifiers

Other legacy medical identifiers associated with James Donald Williamson such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
AD418603OtherCaliforniaENTREFAMILIA
AD414903OtherENTRE FAMILIA IOP
97037OtherCaliforniaCASA OLLIN

Mailing Address

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

James Donald Williamson
301 Grand Ave Ste 301,
South San Francisco, CA - 94080-3641
Phone: 650-244-1447
Fax: 650-244-1447

Book an Appointment with James Donald Williamson

To schedule an appointment, contact James Donald Williamson at 301 Grand Ave Ste 301, South San Francisco, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about James Donald Williamson:

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

James Donald Williamson practices at 301 Grand Ave Ste 301, South San Francisco, California, 94080-3641.

To schedule an appointment with James Donald Williamson, please contact the office at 650-244-1447.

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