About Stellaris Health Network

Stellaris Health Network- A Health Care Partnership

Organizational History and Profile

In August of 1996, Health Star Network, Inc. (d/b/a Stellaris Health Network) was formed by White Plains Hospital Center (White Plains, NY) and Northern Westchester Hospital (Mt. Kisco, NY).  In recognition of dramatic changes occurring in the regional health care marketplace, HealthStar was created to partner like-minded healthcare entities.  These organizations recognized the value of collaboration, synergy, and leverage, and determined to form an alliance to improve health care quality and performance, and reduce costs.   Stellaris Health Network, the region’s first community hospital network, evolved out of the member organizations' shared vision to maintain local decision making and delivery of high quality health care services.

Together, the organizations set an agenda for working together to accomplish goals that, alone, would be more difficult (or impossible) to achieve.  Among the most important initiatives, the organizations envisioned the design and installation of a high quality information technology infrastructure.  Other core objectives included reduction of expenses through supply chain centralization initiatives, and sharing of best practices to improve the quality of services and clinical care offered to our patients.

In March, 1997 Lawrence Hospital Center (Bronxville, NY) joined the Network, and in October 1997 Phelps Memorial Hospital Center (Sleepy Hollow, NY) followed suit.  In recognition of the importance of the Medical Staff of the four hospitals, an independent Physician Practitioner Association (NorthStar IPA) was established in 1999 to represent the needs and voice of our Attending Physicians.  Also in 1999, the Network sponsored the formation of a physician Management Services Organization (Stars MSO) to address the practice management needs of our affiliated physicians. 

Starnet Health Plan was licensed by the New York State Department of Health in 1999, as the first Integrated Delivery System (IDS) in the State of New York.   The IDS enables the Network to offer health insurance directly though our hospitals and affiliated physicians to our community, though currently the Network does not provide this commercial health insurance product.  To reduce health care costs for our institutions and their employees, and to ensure the best quality care, Stellaris serves as a Third Party Administrator (TPA) for a self insured health plan offered to the employees of our hospitals.

In 2000 the Network sponsored the formation of an Emergency Medical Service (EMS), which provides municipal paramedic services to nearly one third of Westchester County, New York.  In addition, Starnet Emergency Services (trade name- Westchester EMS) also provides ambulance, ambulette and related services for the Network, individual clients, and other (non-affiliated) institutions.

 In 2001 HealthStar Network, Inc. began operating under the trade name of Stellaris Health Network.  Stellaris represents the stellar level of care and services we strive to deliver, and, poetically, refers to the growing constellation of affiliates in our network.  Based in Armonk, NY, Stellaris Health Network is managed by Arthur A. Nizza, President and CEO. 

Strategic goals for Stellaris include cost reduction initiatives such as supply chain management; consolidated business functions such as joint insurance procurement programs, managed care contracting, and HIPAA compliance; the implementation of a state-of-the-art information system; and clinical initiatives such as the sponsorship of an Emergency Medical Service (EMS).

As Stellaris pursues new program developments and joint initiatives, it will continue to evolve as the region’s leading healthcare system, dedicated to preserving high quality, community-based care for residents of Westchester, Putnam, Rockland, Dutchess, Northern Bronx and Fairfield Counties.

Mission, Vision, Values

Our Mission:

Stellaris is dedicated to promoting and supporting the missions of its member institutions by facilitating the best and highest use of resources and by distinguishing its members as leaders.

Our Vision:

 To be the model community-based Healthcare Delivery System in the region

Our Values:










Market Leadership



Mutual Trust

Mutual Commitment



Openness to new ideas

Timely and Effective Execution


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Community Health Initiatives

In addition to pursuing numerous business initiatives, the hospitals work collaboratively to sponsor health fairs and programs to improve the health of residents in our community.

Following the tragic events of terrorism of September 11, 2001, each of our institutions have expended significant funds and human effort to train our staff, acquire additional equipment, and implement contingency plans to ensure the welfare of our community in the event of a disaster or emergency.

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Developing a State-of-the-Art Information System

The Stellaris Health hospitals have jointly invested in a multi-million dollar, state-of-the-art information system which enables the hospitals to share resources more efficiently, increase access to valuable clinical and financial data, and prepare the hospitals for the information needs of the 21 century.


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Collaborating with Our Physicians and Academic Affiliates

Attending Physicians affiliated with Stellaris Health Network hospitals are leading practitioners. These doctors have trained at the best institutions, and have met the rigorous credentialing requirements of our hospitals.

Our hospitals and physicians maintain relationships with leading academic medical centers such as New York Presbyterian, Mount Sinai-NYU, and Memorial Sloan Kettering.  Our affiliations enable us to share in the resources and expertise of these teaching centers of excellence.

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Reaching Our Corporate Community

As one of the areas largest employers, with nearly 5,000 employees, and operating revenue of approximately $470,000,000, Stellaris Health understands the importance of businesses having access to quality healthcare. Stellaris Health’s Business Health Services program provides occupational health services including wellness programs; comprehensive physical exams; injury management; travel medicine and immunizations; case management; and regulatory compliance consulting for companies in Westchester and the surrounding area.  In 2001 our centralized Corporate Business Health Unit split into four centers: one at each Stellaris hospital.  For information about occupational health, or for a referral for service, link to a Stellaris hospital.

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Planning for the Future

In collaboration with the NorthStar physicians Independent Practitioner Association (IPA), Stellaris Health filed the first application in New York State to develop an Integrated Delivery System (IDS). The IDS allows the network to provide high quality health care insurance services.  Currently, the Network serves as a third party administrator to consolidate self insured health plans that are offered to the employees of our hospitals.

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