Addiction Therapist

Katherine Mariscal

3286 E Guasti Rd, Ontario, California, 91761-8645

About Katherine Mariscal

Katherine Mariscal is a therapist based in Ontario, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Katherine Mariscal is R1508730523 for Addiction (Substance Use Disorder) Counselor in California. Her current practice location is 3286 E Guasti Rd, Ontario. Patients can reach her at 909-906-9844. Katherine Mariscal NPI number (Unique professional ID assigned by NPPES) is 1578256236.

Katherine Mariscal is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. She helps her 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

Katherine Mariscal 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 Katherine Mariscal
Specialization Addiction (Substance Use Disorder) Counselor
Gender Female
Practice Address: 3286 E Guasti Rd,
Ontario, CA - 91761-8645

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 Number1578256236
NPI Enumeration Date: 30 May, 2023
NPI Last Update On: 08 Jul, 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 Katherine Mariscal are as mentioned below.

License NumberSpecializationStateStatus
R1508730523Addiction (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.

Katherine Mariscal
3286 E Guasti Rd,
Ontario, CA - 91761-8645
Phone: 909-906-9844

Book an Appointment with Katherine Mariscal

To schedule an appointment, contact Katherine Mariscal at 3286 E Guasti Rd, Ontario, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Katherine Mariscal:

Katherine Mariscal is a therapist specializing in Addiction (Substance Use Disorder) Counselor. She is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. She helps her 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, Katherine Mariscal is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Katherine Mariscal practices at 3286 E Guasti Rd, Ontario, California, 91761-8645.

To schedule an appointment with Katherine Mariscal, please contact the office at 909-906-9844.

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