Meet Our Clinical Team

Our staff members are chosen for their ability to provide you with the most advanced care possible and their dedication to delivering an extraordinary treatment experience. When you arrive at Crownview Co-Occurring Institute, you will know that you are in a safe place—one of kindness, expertise, and genuine compassion for the healing process.

Mark Melden, DO/DABPN
Psychiatrist, CEO/President

Jeffrey Klein
Executive Director, CCI

Nathan Kuemmerle, MD
Psychiatrist

Rebecca McKnight, PsyD
Psychologist

Milena Dun, PhD
Psychologist

Brittany Perkins, MA, LMFT
Therapist

Joanne Talbot-Miller, M.A., LMFT
Therapist

Alexis Weintraub, PsyD
Psychological Assistant

Kathleen McCarrick, MSW, LSW
Therapist

Christina Lam, N.P.
Nurse Practitioner

Timothy Wieland
Medical Services Manager

Kelly Schwarzer
Medical Services Supervisor

Meet Our Administrative Support Staff

Our support staff is comprised of a closely interwoven team of professionals. They manage the institute’s operational needs, coordinating seamlessly with the therapists to provide the highest quality service to our clients. The spirit of compassion and individual care permeates the entire CCI staff.

Stacy Morris
Administrative Coordinator

John P. Flores, SUDCC-IV-CS, CADC II
Compliance Director

David Dalton
Facility Operations Director

Brittany Iparaguirre
Operations Director

Jovanna Wiggins
Administrative Assistant

Kenny Gladstone
Program Director

Michelle Ertel
Director of Case Management

Chris Hammett
Admission/Discharge Coordinator

Gabriel Good
Marketing and Business Development Director

Jake Hackman
Admission/Discharge Coordinator

Ready to Get Started Now?

Get In-Touch

Looking for treatment for yourself or a loved one? Get started by connecting with one of our compassionate treatment specialists. Use the Contact Form here or, call us now at  760.433.4357.

Verify Your Insurance

Go here to “Verify your Insurance.” One of our admissions staff members will be in touch with you as soon as possible. We’ll help answer any questions and guide you through the intake process.


Address: 315 N. Clementine Street, Oceanside, CA 92054 © Crownview Co-Occurring Institute
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