Executive Leadership


David Nemiroff, LCSW
President & CEO
Appointed President and CEO in 2014
David Nemiroff has been the President and CEO Director of Harmony Healthcare Long Island since April 2014. Harmony Healthcare Long Island currently provides over 150,000 medical and support visits to more than 40,000 patients per year in multiple sites across Nassau County.
Mr. Nemiroffs’ professional career includes the leadership of the Nassau Queens Performing Providers System working with over 8000 partners to transform the health care of almost half a million Long Islanders, as well as leading the Mental Health Association of Nassau County, Inc. as its Executive Director. He was instrumental in the efforts to shape public policy to support people with mental illness and autism in the ever changing world of health and human services delivery.
Mr. Nemiroff began his career in the Health and Human Services field at Catholic Charities and Family Residences and Essential Enterprises, Inc. (FREE) supervising case management programs for individuals with traumatic brain injury and intellectual disabilities, Mr. Nemiroff’s 14 year career with FREE concluded with him holding the position as its Chief Support Services Officer.
His early career path has had him working as a staff psychotherapist for the United Cerebral Palsy Association of Suffolk County, Inc. and a Certified Field Instructor for both Social Work and Mental Health Counselor students.
Mr. Nemiroff is the Board Chairperson of the Health and Welfare Council of Long Island, a board member of the following organizations: Community Health Care Association of New York State, Community Advocates and Homes Anew I & II. Mr. Nemiroff is a member of the Long Island Health Collaborative, Board of Managers for Community Health Centers IPA. Mr. Nemiroff is on the advisory Board for the MPH Program at Hofstra University and a member of the Energia Partnership.
Mr. Nemiroff lives in Huntington Station, NY with his wife and two children. He is a graduate of State University of New York in Oneonta and holds a Masters in Social Welfare from SUNY Stony Brook.


Savitree Pestano, CFO
Chief Financial Officer
Savitree Pestano, HHLI’s Chief Financial Officer, has more than nineteen years of experience in accounting and financial analysis in nonprofit health care organizations. Before joining the HHLI, she served as the Associate Chief Financial Officer at the Institute for Community Living. Before the Institute for Community Living, she served at the Jewish Board of Family and Children Services and William F Ryan Community Health Center (FQHC) in Senior Financial Management roles. Ms. Pestano has a Master’s of Science-Health Systems degree from Binghamton University.


Stacey C. Jackson-Harley, RN, MA, BSN
Chief Operating Officer
Joined HHLI in 2014
Stacey C. Jackson-Harley, RN MA, BSN is the Chief Operating Officer for Harmony Healthcare Long Island (HHLI), Nassau County, New York.
Stacey earned her Bachelor of Science in Nursing (BSN) degree from the University of Florida in Gainesville, Florida. Returning home to New York, she started her nursing career at New York University Medical Center. She matriculated through her Master of Arts (MA) degree in Nursing Administration from NYU. She knew her calling to serve was as a Nurse Executive Leader.
Stacey has worked as a Transformational Nurse Executive Leader for over 25 years. She has worked in various health settings and has held multi-faceted nursing leadership roles. Prior to joining HHLI, Stacey has held various leadership positions with the NYU Medical Center, the North Shore LIJ Health System and Visiting Nurse Service of NY. She has initiated programs for patients and their families. She is a believer in rendering excellent quality safe care – as one day we will also be consumers of that care.
Stacey is a visionary leader who has focused her talents and expertise into the public and community health arena at HHLI. Stacey continues her quest for equitable access to healthcare for the undeserved communities and promotion of health initiatives with a comprehensive focus on quality improvement of health services and innovation.


Julie Harnisher, MHA
Vice President Population Health
Joined HHLI in 2011
Julie Harnisher, MHA Julie Harnisher joins HHLI as Vice President of Population Health to lead our new Population Health Department and continue to lead our outreach efforts. Her most recent position was the Director of Physician Recruitment and Community Outreach for NuHealth’s Ambulatory Care and Business Development Department, where her responsibilities included: practice assimilation/acquisition, physician relations, recruitment and retention, strategic planning, event planning, payer relations, marketing and sales.
Prior to working at Harmony Healthcare Long Island, she held positions at North Shore/LIJ and HealthPlus where she found her passion for working with the most vulnerable and medically underserved populations.
Julie holds a Master’s degree in Health Care Administration from Hofstra University and a Bachelor’s degree in Psychology from Adelphi University. She has been working in the health care field for over 20 years in various leadership roles.


Sunny Brown
Vice President Human Resources
Appointed Vice President of Human Resources in 2014
Sunny Brown is the Vice President of Human Resources at Harmony Healthcare Long Island (HHLI). Sunny Joined the HHLI in June of 2014 and began assembling a progressive HR team. Prior to joining HHLI, Sunny was the Director of HR at the Mental Health Association of Nassau County. Sunny has over 15 years of experience in HR in various industries including manufacturing and service and has worked in various regions of the US as well as Europe and Asia. Sunny has a Bachelor’s degree in Economics and a Master’s degree in Human Resources and Industrial Relations, both from the University of Illinois.
Administrative Leadership


Suanne Kowal-Connelly, MD
Director of Pediatric Clinical Quality
Joined HHLI in 2014


Snezhana Mullokandov, MD
Director of OB/GYN Clinical Quality
Joined HHLI in 2009


Melinda Carbonell, LMSW
Director Care Coordination
Joined HHLI in 2015


Yadia Hinds, MHA, CDN, CLC
Director WIC Program
Joined HHLI in 2015


Emilly Trice, MSHA
Director of Dental Services
Joined HHLI in 2017


Rebecca Charles, MHA
Director of Operations
Joined HHLI in 2015


Vanessa Morillo
LCSW Director of Behavioral Health Quality


Amy Fleischer
Development Director
Joined HHLI in 2022
Board of Directors


Jessica Sparrow
2nd Chair
Health Center Representative Westbury


Dr. Don C. Hinds, PhD
Board Member
Health Center Representative Westbury


Ann Hickson
Secretary
Health Center Representative Roosevelt


Mary Beth Heiskell
Board Member
Health Center Representative Westbury


Sr. Evelyn Lamoureux
Board Member


Lance Elder
Board Member
Frank Piscetelli
Board Chair
Health Center Representative Westbury
Marianela Casas
Board Member
Health Center Representative Freeport
Elizabeth Rouse
Board Member
Health Center Representative Elmont
Robert Detor
Board Member
Gwen O’Shea
Nominating Committee Chair
Lori Rung
Board Member
Health Center Representative, Oceanside
Mary Beth Heiskell
Board Member
Health Center Representative Westbury
Meet our Team of Health Care Professionals