Together at the Top


Doctors, nurses, psychologists, social workers, mental health counselors, CASACs

Our staff is composed of an interdisciplinary team of professionals who will work with you to achieve your goals and maintain your sobriety



Executive Director and Clinical Director



Clinical Supervisor and Consultant


Medical Director

David M. Ockert, PhD is the founder of the Parallax Center. He currently serves as the Executive Director and Clinical Director. Dr. Ockert has developed methodologies for outpatient detoxification and stabilization from all drugs of abuse. 

Barbara Feldmann, LCSW-R, CASAC has worked in the field of addiction treatment since 2006. She was Parallax Center's Clinical Director, from 2010 to 2017, and continues to serve as a Clinical Supervisor and Consultant for Parallax Center, from 2018 to present. 

Alexandra Fingesten, MD has served as the Medical Director for Parallax Center since 2002. She manages and supervises all medical services, including psychiatric and withdrawal treatments.


Senior Counselor

Patricia Sparks, BA, CASAC has been providing services for people with mental health and substance use disorders for over 22 years.  She has been working with Parallax Center since 2000. 


Operations Director

Jane Marin, BS has been working with Parallax Center since 2007. Starting as an entry level biller, she currently serves as the Operations Director, overseeing the general operations of the agency and coordinating administrative departments.  

Employee Spotlight

Zoë Sheinberg,
Clinical Coordinator

Meet Zoë, LMSW! Zoë is a social worker and one of the Clinical Coordinators at Parallax Center helping to oversee both of our detoxification and continuing care programs. She has been with Parallax since 2017 when she began as a graduate school intern. What she says about working here:


My favorite thing about working at Parallax is the collaboration among staff and the team-oriented approach we take in order to help clients succeed. In addition, I love seeing clients who made lasting changes while in care. Although the COVID-19 pandemic has made treatment and sobriety more challenging, I am happy we were able to stay open and continue to provide services.


In her free time, she enjoys watching the New York Rangers, football, spending time with her family and friends, and being a first-time aunt to her new nephew.

Want to meet our former Employee Spotlight holders? 

Check them out here!

Employee Spotlight: Director of Outreach

Meet Natalie Helpern! She joined our team in 2015 as a graduate intern from New York University’s Silver School of Social Work. Read more about her by clicking below:

Employee Spotlight: Senior Counselor

Meet Patricia Sparks! She has been working with the Parallax Center for over 20 years. Read more about her by clicking below:

Employee Spotlight: Therapist

Meet Ariel Hurley! She has been working with the Parallax Center for almost 2 years. Read more about her by clicking below:

Employee Spotlight: Nurse

Meet Joe Nebbia! He has been working with the Parallax Center for over 2 years. Read more about him by clicking below: