Addiction Therapist

Dr. Ronald D Gellis, PH.D.

25 Floramar, Rancho Santa Margarita, California, 92688-1308

About Dr. Ronald D Gellis

Dr. Ronald D Gellis is a therapist based in Rancho Santa Margarita, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Dr. Ronald D Gellis is PSY9191 for Clinical Neuropsychologist in California. His current practice location is 25 Floramar, Rancho Santa Margarita. Patients can reach him at 949-533-6075. Dr. Ronald D Gellis is PH.D. in Addiction (Substance Use Disorder) Counselor and his NPI number (Unique professional ID assigned by NPPES) is 1891038352.

Dr. Ronald D Gellis 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

Dr. Ronald D Gellis 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 Dr. Ronald D Gellis
Specialization Addiction (Substance Use Disorder) Counselor
Credentials PH.D.
Gender Male
Practice Address: 25 Floramar,
Rancho Santa Margarita, CA - 92688-1308

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 Number1891038352
NPI Enumeration Date: 03 Apr, 2013
NPI Last Update On: 09 Jun, 2020

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 Dr. Ronald D Gellis are as mentioned below.

License NumberSpecializationStateStatus
PSY9191Clinical Neuropsychologist CaliforniaPrimary
PSY9191Addiction (Substance Use Disorder) Counselor CaliforniaSecondary
PSY9191Mental Health Counselor CaliforniaSecondary
PSY9191Professional Counselor CaliforniaSecondary

Mailing Address

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

Dr. Ronald D Gellis
25 Floramar,
Rancho Santa Margarita, CA - 92688-1308
Phone: 949-533-6075

Book an Appointment with Dr. Ronald D Gellis

To schedule an appointment, contact Dr. Ronald D Gellis at 25 Floramar, Rancho Santa Margarita, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Ronald D Gellis:

Ronald D Gellis is a therapist specializing in Clinical Neuropsychologist. He An individual with a doctorate degree, licensure in clinical psychology and specialized training or board certification in neuropsychology who practices or adheres to the principles of neuropsychology; a specialty within the field of psychology focusing primarily on neurobehavioral functioning.

Yes, Ronald D Gellis is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Ronald D Gellis practices at 25 Floramar, Rancho Santa Margarita, California, 92688-1308.

To schedule an appointment with Ronald D Gellis, please contact the office at 949-533-6075.

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