About HarmonyCares

Meet Our Leadership Team

Meet the leaders driving our mission to provide high-quality personalized
healthcare in the home for people who have difficulty accessing care.

Matthew Chance

Chief Executive Officer

Michael Millie, MD

Chief Medical Officer

Jennifer Gilchrist

President, Medical Group

Zack Mulligan

Chief Financial Officer

Kristin Darby

Chief Information Officer

Alexander Sozdatelev

Chief Business Officer

Scott Vasey

President, Home Health, Hospice, and Palliative Care

Lorraine Quintanar

Senior Vice President, Talent

Purav Bhatt

Chief Transformation Officer
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Meet Our Leaders

Matthew Chance

Chief Executive Officer
Get to Know Matt

With over 20 years of experience and a career dedicated to improving home-based healthcare, Matt has been actively helping healthcare organizations solve their most challenging problems. In May 2022, Matt became CEO of HarmonyCares (then U.S. Medical Management) and has been part of further defining the standard for home-based care for the most vulnerable patients who need it most across the country. Prior to joining HarmonyCares, Matt was the CEO of Ready Responders and President of myNEXUS, where he worked to innovate in-home care models which improve health equity and access to care. Before his tenure with Ready Responders and myNEXUS, Matt provided enterprise-wide strategic and operational oversight for all health engagement initiatives for Cigna-Healthspring, including STARS/quality, risk adjustment, customer analytics and engagement. Matt worked with HealthSpring for 9 years and was the COO of HealthSpring of Alabama before moving to Cigna-HealthSpring enterprise operations. While in Alabama, he helped develop various aligned models within the delivery system to better connect the health plan and provider community. Matt began his career in healthcare, working with hospitals and insurers at AIM Healthcare Services. He led operations for the southeast region and was with AIM for 5 years. 

Why HarmonyCares?


“The everyday hard work and commitment by our teams is a testament to the passion they feel and their dedication to the patients whom we serve. We believe that every patient has a unique story, and each deserves a tailored approach to their care. Our success is about people devoted to taking care of people.”

Meet Our Leaders

Michael Millie, MD

Chief Medical Officer
Get to Know Mike

Mike has a proven track record of achieving financial success, strategic growth and quality improvement while leading a large portion of our growing business. One of the most important strategies in these successes was pursuing increased engagement and investment in physician leaders at a time when physician leadership budgets were being gutted. The return on this investment was surprising, even to him, and confirmed the theory that providers still have meaningful control in ambulatory medicine.

Mike started by driving small projects within his surgery department and quickly moved to leadership roles in their professional liability insurance group. In 2011 he became chair of their large general surgery department. In 2013 he was promoted to surgery chief for the surgery section and ambulatory surgery centers. Together, with his physician leader colleagues, they have achieved operational excellence, including safety and quality, strategic growth and continuously improving financial performance. Through all of this work Mike has followed the same principles: honor the patient and respect the provider. Slowly, we are aligning incentives, improving healthcare delivery and, ultimately, improving the nation’s health.

Why HarmonyCares?

“I want to transform healthcare. Nothing less. The goal is to align incentives for all stakeholders to increase value in the system. A daunting task, for certain. Through a mix of population health, business expertise and creativity the task is attainable as certainly as it is difficult. ”

Meet Our Leaders

Jennifer Gilchrist

President, Medical Group
Get to Know Jenn

Jenn has been in the healthcare industry for 25 years, spending the last decade concentrating in the value-based care space. Jenn has extensive experience leading clinical operations teams in start-ups and transformational organizations. This role brings her back to a space she knows well and has been passionate about for years. It is important to her that HarmonyCares is successful in driving quality healthcare services into the home for people who need it most.

Why HarmonyCares?

“I chose Harmony Cares as the mission of our company aligns with my passion for delivering quality healthcare to individuals who need it most and struggle to find access in the traditional healthcare system.  As an operator, I am able to support our clinical teams by removing barriers so they can deliver the highest level of quality care to our patients.”

Meet Our Leaders

Zack Mulligan

Chief Financial Officer
Get to Know Zack

As Chief Financial Officer at HarmonyCares, Zack Mulligan is responsible for overseeing and managing the overall financial performance of the business and for helping set strategic financial priorities.  Prior to joining HarmonyCares, Zack was the Chief Financial Officer at naviHealth, a post-acute care coordination business that partners with health plans, health systems, and risk-bearing physician groups. Zack also previously worked in growth equity investing at Pamlico Capital and investment banking at Wells Fargo Securities.

Why HarmonyCares?

“HarmonyCares is solving a critical need in the healthcare system today, bringing high-quality and much needed care to complex seniors across the country.  I am extremely lucky to be part of the team and seek to ensure the sustainability and growth of a service that enhances the quality of life for our current and future patients.”

Meet Our Leaders

Kristin Darby

Chief Information Officer
Get to Know Kristin

Kristin is a healthcare executive who is passionate about building and leveraging technology to improve the experience of the patients we serve. She is experienced in leading complex organizational transformations, product development and IT integrations for large multi-site, multi-state, healthcare organizations. Her previous experience includes Envision Healthcare, Tenet, Cancer Treatment Centers of America, Fresenius and Risk Management Foundation of Harvard Medical Institutes.

Why HarmonyCares?

“I am inspired to be part of a company that is transforming access to care in the home. The opportunity to develop and execute a technology strategy that enables this model and improves the patient experience motivates me every day.”

Meet Our Leaders

Alexander Sozdatelev

Chief Business Officer
Get to Know Alex

Alex Sozdatelev is a Chief Business Officer of HarmonyCares in charge of business development, growth, strategy, and our Accountable Care Organizations. Prior to joining HarmonyCares, Alex was a Partner at Rubicon Founders, a healthcare services focused investment firm where he led deals in primary care, specialty care, and home-based care. He has spent over ten years at McKinsey & Co, most recently as a Partner at Healthcare practice serving health plans, PBMs, retail pharmacies, PE funds, and PE-backed healthcare companies. Alex holds an MBA from University of Chicago Booth School of Business.

Why HarmonyCares?

“I grew up in Russia where it is a norm, not an exception, that physicians and nurses are coming to homes to see patients who need care: from children to seniors. I know firsthand that it is a better model to treat patients, especially older and frail. I was genuinely surprised when I first learned that in the US sick patients need to come to a clinic or Emergency Room to get care. So, when I learned about home-based model like HarmonyCares’, I immediately recognized its benefits and got excited to grow such model and make it available to more patients across the country.”

Meet Our Leaders

Scott Vasey

President, Home Health, Hospice, and Palliative Care
Get to Know Scott

Scott Vasey has worked in health care for over thirty years.  Starting out as a social worker, he has a passion for “communities of caring”, with an emphasis on the quadruple aim of improving quality, reducing overall cost, and improving both member and provider satisfaction.  Over the course of his career he has led payer and provider strategy for such organizations as UPMC, UHC/Optum, VNS Health, myNEXUS/Carelon, and AmeriHealth Caritas, with a focus on improving quality and outcomes, operational performance and technology integration, and lowering total cost, with ten-plus years solely focused on the home and community.  Scott has worked with thousands of organizations in almost every state, and has also been a speaker on value-based care models in post-acute and community-based care. 

Why HarmonyCares?

“I joined HarmonyCares, because I believe in the community-based model of care, and the continuum that HarmonyCares brings to patients and families in their homes, to ensure that everyone has access to quality healthcare.”

Meet Our Leaders

Lorraine Quintanar

Senior Vice President, Talent
Get to Know Lorraine

Lorraine is a healthcare talent leader with deep and broad experience across multiple care settings. She known amongst her peers as a skilled liaison and trusted leader with a strong reputation of guiding teams, driving innovative strategies and programs with clear communications, identifying and including key partners, and transforming business processes to achieve strong outcomes.  Lorrain has been consistently recognized for achieving high impact, visible results in fast-paced, rapidly changing environments.

Why HarmonyCares?

Our mission and our people.  We model care in a way that our patients feel seen and heard.  We strive to be the partner of choice to clinicians, our patients, and our team members. Because we work relentlessly to understand what matters most to all that we serve, every day is filled with the opportunity to contribute to our mission and our people. It doesn’t get any better than that…

Meet Our Leaders

Purav Bhatt

Chief Transformation Officer
Get to Know Purav

Purav joined Harmony Cares in September 2023 as the Chief Transformation Officer, where he oversees Clinical Product Operations, Lab & Diagnostics, CHA operations, Data analytics and Technology. Prior to joining Harmony Cares, he served as the Chief Operating Officer at Evergreen Health Medical Group (WA state) and has held multiple value based medical group operational leadership roles in Optum.  He has also served on the advisory committee for Healthcare Cost Transparency Board in WA state. With over a decade of experience leading technology enabled clinical operations, he is leading the charge for scaling care delivery infrastructure at Harmony Cares.

Why HarmonyCares?

“Working on systematic solutions to eliminate barriers to high quality clinical care – especially in very complex populations is a calling for me and HarmonyCares is at the forefront of delivering home based complex primary care in the US. The opportunity to serve alongside this extremely talented group of passionate leaders and care providers is an honor.”

Meet Our Leaders

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