James Donald Williamson
Addiction (Substance Use Disorder) Counselor
301 Grand Ave Ste 301, South San Francisco
California, 94080-3641
650-244-1447 650-244-1447
Maps & DirectionsJames Donald Williamson is a South San Francisco, California based counselor who is specialized as Addiction (Substance Use Disorder) Counselor. His current practice location is 301 Grand Ave Ste 301, South San Francisco. Patients can book an appointment with him at 650-244-1447.
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.
Complete Profile:
James Donald Williamson 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: | James Donald Williamson |
| Specialization: | Addiction (Substance Use Disorder) Counselor |
| Gender: | Male |
| Accepts Medicare Assignment: | No |
| Practice Address: | 301 Grand Ave Ste 301, South San Francisco,
California, 94080-3641 |
| Phone: | 650-244-1447 |
| 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 Number: | 1174934012 |
| NPI Enumeration Date: | 14 May, 2014 |
| NPI Last Update On: | 14 May, 2014 |
Other Medical Identifiers:
Other legacy medical identifiers associated with James Donald Williamson such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| AD418603 | Other | California | ENTREFAMILIA |
| AD414903 | Other | | ENTRE FAMILIA IOP |
| 97037 | Other | California | CASA OLLIN |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | 301 Grand Ave Ste 301,
South San Francisco, California |
| Zip: | 94080-3641 |
| Phone Number: | 650-244-1447 |
| Fax Number: | 650-244-1447 |
Patients can reach James Donald Williamson at
301 Grand Ave Ste 301, South San Francisco, California or can
call to book an appointment on 650-244-1447.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 09 February, 2026.