Professional Therapist

Eugene Chien

9390 Base Line Rd, Rancho Cucamonga, California, 91701-5839

About Eugene Chien

Eugene Chien is a therapist based in Rancho Cucamonga, California who is specialized in Professional Counselor. Active license number of Eugene Chien is 7991 for Professional Counselor in California. His current practice location is 9390 Base Line Rd, Rancho Cucamonga. Patients can reach him at 909-484-5151. Eugene Chien NPI number (Unique professional ID assigned by NPPES) is 1821414590.

Eugene Chien is a licensed mental health practitioner trained to help individuals, couples, and groups address emotional, psychological, and behavioral challenges. He uses talk therapy and evidence-based counseling methods to support clients in managing mental health conditions, improving relationships, and developing coping strategies for life’s difficulties.

Practice Information

Eugene Chien 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 Eugene Chien
Specialization Professional Counselor
Gender Male
Practice Address: 9390 Base Line Rd,
Rancho Cucamonga, CA - 91701-5839

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 Number1821414590
NPI Enumeration Date: 05 Mar, 2014
NPI Last Update On: 29 Jan, 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 Eugene Chien are as mentioned below.

License NumberSpecializationStateStatus
7991Professional 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.

Eugene Chien
9390 Base Line Rd,
Rancho Cucamonga, CA - 91701-5839
Phone: 909-484-5151

Book an Appointment with Eugene Chien

To schedule an appointment, contact Eugene Chien at 9390 Base Line Rd, Rancho Cucamonga, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Eugene Chien:

Eugene Chien is a therapist specializing in Professional Counselor. He is a licensed mental health practitioner trained to help individuals, couples, and groups address emotional, psychological, and behavioral challenges. He uses talk therapy and evidence-based counseling methods to support clients in managing mental health conditions, improving relationships, and developing coping strategies for life’s difficulties.

Yes, Eugene Chien is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Eugene Chien practices at 9390 Base Line Rd, Rancho Cucamonga, California, 91701-5839.

To schedule an appointment with Eugene Chien, please contact the office at 909-484-5151.

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