About Us

InSite Health is redefining outpatient psychiatry for children and adults. InSite provides local communities access to in-network, high quality psychiatric care. We meet patients where they are: at home, at school, or at one of our convenient locations.

We offer mental health care to families, schools, nonprofits, colleges and organizations throughout New Jersey. InSite also offers preventative mental health training and programming for school districts.

InSite Health logo

Leadership Team

Christopher Gaeta

Christopher Gaeta

Chief Executive Officer
Anthony DeSena, MSPT

Anthony DeSena, MSPT

Chief Operations Officer
Nassir Ghaemi, MD, MPH

Nassir Ghaemi, MD, MPH

Chief Medical Officer
James J. Gillespie, PhD, JD

James J. Gillespie, PhD, JD

Chief Health Equity Officer
Andrew Fullmer, MBA

Andrew Fullmer, MBA

Chief Financial Officer
Amy Carnall, DNP, APN, PMHNP-BC

Amy Carnall, DNP, APN, PMHNP-BC

Co-Director of Mental Health Services
Cristina Sertway, MSN, APN, PMHNP-BC

Cristina Sertway, MSN, APN, PMHNP-BC

Co-Director of Mental Health Services
Andy Inman

Andy Inman

VP of Marketing & Communications
James Rossi

James Rossi

VP of Sales & Partnerships

Our Providers

Allen Masry, MD

Allen Masry, MD

Child & Adult Psychiatrist
Michelle Guarnizo, MSN, APN, PMHNP-BC

Michelle Guarnizo, MSN, APN, PMHNP-BC

Psychiatric Nurse Practitioner
Josh Schorr, MSN, APN, PMHNP-BC

Josh Schorr, MSN, APN, PMHNP-BC

Psychiatric Nurse Practitioner
Amy Carnall, DNP, APN, PMHNP-BC

Amy Carnall, DNP, APN, PMHNP-BC

Co-Director of Mental Health Services
Cristina Sertway, MSN, APN, PMHNP-BC

Cristina Sertway, MSN, APN, PMHNP-BC

Co-Director of Mental Health Services
Matthew Minteer, MSN, APN, PMHNP-BC

Matthew Minteer, MSN, APN, PMHNP-BC

Psychiatric Nurse Practitioner
Aaron Spector, MSN, APN, PMHNP-BC

Aaron Spector, MSN, APN, PMHNP-BC

Psychiatric Nurse Practitioner
Alfina Evans, MSN, APN, PMHNP-BC

Alfina Evans, MSN, APN, PMHNP-BC

Psychiatric Nurse Practitioner
Diane Burt, RN, MSN, PMHNP-C, FNP-C

Diane Burt, RN, MSN, PMHNP-C, FNP-C

Psychiatric Nurse Practitioner
Bianca Valentin, MSW, LCSW, LCADC

Bianca Valentin, MSW, LCSW, LCADC

Therapist - LCSW
Nikki Tierney, MS, JD, LPC, LCADC, NCC

Nikki Tierney, MS, JD, LPC, LCADC, NCC

Therapist - LPC and LCADC

Advisory Board

Sabrina Braham, MD

Sabrina Braham, MD

Stephen Klasko

Stephen Klasko

Dr. Marnie McCoy

Dr. Marnie McCoy

Mason Plumlee

Mason Plumlee

Andrew Zalasin

Andrew Zalasin

Have questions? Contact us and our team will get back to you as soon as possible.