COMPANY INFO
HarmonyCares, originally founded in 1993 as U.S. Medical Management LLC, is a private company headquartered in Troy, Michigan, operating in the Elder and Disabled Care industry. It has between 1001 and 5000 employees and provides comprehensive home-based healthcare services including primary and specialty care, durable medical equipment, diagnostics, and hospice care, focusing on individuals with complex medical needs. The company is majority-owned by Rubicon Founders, with Matt Chance serving as CEO. While the founders' names are not publicly detailed, HarmonyCares is recognized for its coordinated, physician-driven care model that serves patients in the comfort of their homes.
HarmonyCares, originally founded as U.S. Medical Management LLC in 1993, is a leading provider of comprehensive home-based healthcare services for individuals with complex medical needs across the United States. The company is headquartered in Troy, Michigan and operates in the Elder and Disabled Care industry with a focus on primary and specialty care, durable medical equipment, diagnostics, and hospice care.
HarmonyCares executives represent a diverse and experienced leadership team, blending medical expertise, operational excellence, financial acumen, and innovative thinking. The management team drives the company’s mission to deliver high-quality, coordinated care in patients’ homes, reflecting a strong commitment to clinical outcomes, technological advancement, and health equity. With backgrounds spanning value-based care, healthcare operations, compliance, technology, actuarial science, and patient experience, HarmonyCares’ leadership and management team is structured to sustain growth and set new standards in elder and disabled care.
As CEO of HarmonyCares since May 2022, Matthew Chance leads the company in innovating in-home care models that improve health equity and access to care. He drives overall strategy, operations, and growth initiatives, leveraging his extensive leadership experience in post-acute care management and healthcare operations to maintain HarmonyCares’ role as a critical player in the home-based primary care sector.
Matthew holds a Bachelor of Science in Psychology from Lipscomb University and has over 20 years of healthcare leadership experience. Prior to joining HarmonyCares, he served as CEO at Ready, President & COO at myNEXUS®, and held senior roles at Cigna-HealthSpring and Healthspring of Alabama, where he demonstrated expertise in sales, strategy, operations, and value-based contracting in healthcare.
Jennifer Gilchrist serves as President of HC Medical Group at HarmonyCares since July 2023, overseeing medical group operations and strategic growth. She brings operational excellence and business development expertise to enhance the company's healthcare delivery and strengthen patient outcomes.
Jennifer earned a Bachelor's degree in Business/Corporate Communications from Bentley University. Her prior experience includes COO roles at Lightship and Springtide Child Development, and other leadership roles at Landmark Health and Insight Imaging, where she gained a strong background in healthcare operations, business development, and regional management.
Zack Mulligan has served as Chief Financial Officer of HarmonyCares since 2022, responsible for financial strategy, corporate development, and fiscal management. His background in healthcare private equity, investment banking, and finance leadership directly supports company growth and financial health.
Zack holds a Bachelor of Arts in Economics with a Business Minor from The University of the South. He has previously held CFO and VP of Finance roles at naviHealth, was an associate at Pamlico Capital, and gained foundational experience as a healthcare investment banking analyst at Wells Fargo Securities.
Jonathan D'Souza has been Chief Product & Technology Officer since November 2024, guiding HarmonyCares’ data, analytics, and technology innovation. He leads product strategy and technological transformation, enabling the company to deliver enhanced, data-driven healthcare solutions for patients.
Jonathan received his Master of Information & Data Science from University of California, Berkeley and a Bachelor of Technology from the Indian Institute of Technology, Bombay. His leadership path features roles at MedArrive, Optum Analytics, Advisory Board, Microsoft, and Epic Systems, with a focus on product and technology in healthcare.
Janine Valdez, HarmonyCares’ Chief Compliance Officer since May 2022, oversees all compliance program elements, regulatory adherence, and risk management. She ensures ethical standards and regulatory compliance across the organization, leading comprehensive education and audit initiatives.
Janine holds a Bachelor of Arts in Accounting from The College of Santa Fe and a Bachelor of Arts in Humanities from Providence College. She has significant compliance expertise, honed through leadership roles at US Medical Management and Genesis HealthCare.
Dan Santmyer joined HarmonyCares as Chief Actuarial Officer in December 2024, overseeing actuarial consulting, risk advisory, and healthcare economics. He supports data-driven risk management and financial forecasting to optimize both care delivery and cost management.
Dan holds a Bachelor of Science in Mathematics from Loyola College in Maryland. He brings over 20 years of experience from Cedar Gate Technologies, UnitedHealth Group, Beacon Health Options, Milliman, Wellpoint, and Blue Cross Blue Shield of North Carolina.
Shannon Adams, Chief Experience Officer since January 2025, spearheads engagement, patient experience, marketing, and service operations at HarmonyCares. She prioritizes company culture and leverages customer insights to improve both patient and employee satisfaction.
Shannon holds a Master’s in Social Science Research from Vanderbilt University and a B.A. in Sociology and Political Science from Western Kentucky University. Her career includes 20+ years in healthcare engagement and marketing with former roles at Honest Health and Cigna.
Michael Niffenegger, SVP and General Manager since November 2023, is responsible for business operations and strategic growth at HarmonyCares. He leverages financial leadership and operational expertise to drive excellence and market expansion.
Michael earned a B.S. in Accounting from Penn State University and an MBA from Mississippi State University. Previously, he held senior finance and strategy roles at Cigna and audit positions at KPMG, and is an inactive Certified Public Accountant.
Dr. Michael Millie, Chief Medical Officer since April 2022, leads clinical innovation, value-based care programs, and physician leadership development at HarmonyCares. He aims to align clinical incentives, improve quality of care, and optimize outcomes for patients.
Michael holds an MBA from University of Washington and an MD from University of Nebraska Medical Center, with extensive surgical training. His clinical leadership includes key roles at Optum and Everett Clinic.
Scott Vasey, Chief Strategy Officer, brings visionary leadership in product management, provider network development, and health plan implementations. He shapes HarmonyCares’ growth strategies and product innovation for future success.
Scott has a strong background in healthcare strategy and network operations, including past leadership at myNEXUS and other organizations, making him an expert in agency processes and health plan implementations.
The HarmonyCares executive team brings together a dynamic mix of clinical, operational, financial, and technological expertise needed to advance value-based care and home-based healthcare services across the U.S. This seasoned management team is organized to support company agility, regulatory compliance, and long-term innovation, with clear lines of accountability for key functional areas. The company’s collaborative leadership structure enables HarmonyCares executives to set and execute strategy that meets evolving patient and market needs while expanding the company’s national footprint.
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