Counselor

Mr. Sean P Donnelly, PEER SUPPORT SPECIAL

416 2nd Ave, San Mateo, California, 94401-3205

About Mr. Sean P Donnelly

Mr. Sean P Donnelly is a therapist based in San Mateo, California who is specialized in Counselor. Active license number of Mr. Sean P Donnelly is SUDRCI25906 for Addiction (Substance Use Disorder) Counselor in California. His current practice location is 416 2nd Ave, San Mateo. Patients can reach him at 650-579-7881. Mr. Sean P Donnelly is PEER SUPPORT SPECIAL in Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1255229530.

Mr. Sean P Donnelly is a trained and licensed mental health professional who helps individuals, couples, or groups manage and overcome emotional, psychological, behavioral, or relationship challenges. He works with people dealing with anxiety, depression, mood disorders, trauma, post-traumatic stress disorder (PTSD), grief and loss etc. He support his clients by understanding their thoughts, emotions, and behaviors.

Practice Information

Mr. Sean P Donnelly 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. Sean P Donnelly
Specialization Counselor
Credentials PEER SUPPORT SPECIAL
Gender Male
Practice Address: 416 2nd Ave,
San Mateo, CA - 94401-3205

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 Number1255229530
NPI Enumeration Date: 25 Jun, 2025
NPI Last Update On: 17 Jun, 2026

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. Sean P Donnelly are as mentioned below.

License NumberSpecializationStateStatus
SUDRCI25906Addiction (Substance Use Disorder) Counselor CaliforniaPrimary
MPSS-MKGVZOPeer Specialist CaliforniaSecondary

Mailing Address

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

Mr. Sean P Donnelly
114 S Delaware St,
San Mateo, CA - 94401-3222
Phone: 650-579-7881

Book an Appointment with Mr. Sean P Donnelly

To schedule an appointment, contact Mr. Sean P Donnelly at 416 2nd Ave, San Mateo, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mr. Sean P Donnelly:

Sean P Donnelly 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, Sean P Donnelly is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Sean P Donnelly practices at 416 2nd Ave, San Mateo, California, 94401-3205.

To schedule an appointment with Sean P Donnelly, please contact the office at 650-579-7881.

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