Meet Our Staff

Kathleen Prendergast, MSN, APN-C
Psychiatric Nurse Practitioner

Kathleen Prendergast is a nurse practitioner, board certified by the American Nurses Credentialing Association in adult psychiatry/mental health. She graduated cum laude from Jersey City State University with a Bachelor of Science degree in Nursing. Ms. Prendergast then went on to receive a Master of Science in Nursing degree from Rutgers University with the specialty of Adult Psychiatry and Mental Health.

Ms. Prendergast had worked for over 30 years as a Registered Nurse in a variety of areas including psychiatry and substance abuse. As a nurse practitioner, Ms. Prendergast has treated individuals and their families in outpatient settings dealing with many conditions, including anxiety, depression, obsessive compulsive disorder, attention deficit disorder and alcohol and substance abuse. Additionally, Ms. Prendergast has served on the graduate faculty of Rutgers University. Ms. Prendergast has been a Clinical Expert on the Scholarly Review Committee for the American Psychiatric Nurses Association. She is also the President of the Society of Psychiatric Advanced Practice Nurses.

Christopher Tomkins, LPC, ACS, CCS

Christopher Tomkins is a Licensed Professional Counselor with experience treating a wide range of disorders, including substance abuse and mental health. He is a National Credentialed Counselor with a Master's degree in Clinical and Counseling Psychology from William Paterson University. In addition to private practice, he is the Deputy Director of Treatment at The Harbor, a treatment center in Newark, NJ. He has prior experience at Talbot Hall, Wayne Counseling and Family Services and Community Service Foundation. He is experienced in providing treatment for issues such as substance abuse, mood disorders, anxiety disorders, grief, trauma, multicultural issues, and traumatic brain injury. He is also an Approved Clinical Supervisor and Certified Clinical Supervisor.

Matthew Navitski, MA

Matthew Navitski is the Intake Counselor for Caldwell Mental Health Center. Mr. Navitski graduated from Fairleigh Dickinson University with a Masters degree in Social and Community Psychology. He has had experience in individual and group counseling at multiple settings including Wayne Counseling Center and Addiction Recovery Systems. Additionally, he has been a Recovery Support Specialist at Recovery Centers of America.

Melissa Navitski

Melissa Navitski is a psychiatric assistant and office manager for Caldwell Mental Health Treatment Center. She assists with patient inquiries and is a liason with the laboratories, pharmacies and insurance providers.


Caldwell Mental Health is a private practice providing individualized mental health services including medication and counseling.


Caldwell Mental Health
12 Smull Avenue
Caldwell, NJ 07006