Our Leadership

Meet our team

Our team brings a full spectrum of health care leadership experience to CareAllies. From clinical operations, to consumer health and physician engagement, the expertise and innovation at CareAllies shines through.

Our Leadership
Headshot of Julian Harris, MD, MBA

Julian Harris, MD, MBA


Dr. Julian Harris is President of CareAllies, an innovative population health management services company focused on helping physician groups and delivery systems navigate the transition to value-based care.

Julian joined Cigna in September 2015 to accelerate the company's delivery of value-based products and solutions to customers and providers in local markets. He became President of CareAllies in June 2016.

Prior to Cigna, Julian served as the Associate Director for Health in the White House Office of Management and Budget (OMB). As the federal government's chief health care budget official, he oversaw $1 trillion in spending and policy for a range of coverage programs, including Medicare, Medicaid, Marketplaces, the Centers for Medicare & Medicaid Services (CMS) Innovation Center, and the Federal Employees Health Benefits Program. Julian led OMB's engagement and oversight of agencies on initiatives as diverse as developing new CMS Medicare ACO and bundled payment models, streamlining the Meaningful Use rules, replacing Sustainable Growth Rate (SGR), and establishing the federal government's 50/90 value-based payment goal.

During his time as the chief executive of the $11 billion Medicaid program in Massachusetts, Julian led the development of a primary care-centered ACO program, built value-based payment into the country's first Medicare-Medicaid duals demonstration, and launched the Delivery System Transformation Initiative to accelerate safety net hospitals' transition to value-based payment.

Julian has supported and led public and private sector delivery system reform and population health projects in the U.S. and abroad. He has also advised technology startups, physician groups, investors and delivery systems on innovative approaches to navigating and supporting the transition to value-based payment.

Julian trained in internal medicine and primary care at Harvard Medical School's Brigham & Women's Hospital, and he worked as a hospitalist at Cambridge Health Alliance. He graduated with a Bachelor of Arts degree in Health Policy & Medical Ethics from Duke University, and he holds a Master of Science degree from Oxford University. He is also a graduate of the Health Care Management MBA Program at the Wharton School of Business and the School of Medicine at University of Pennsylvania.

Headshot of Nicholas Gettas, MD

Nicholas Gettas, MD

Senior Vice President & Chief Medical Officer

Dr. Nicholas (Nick) Gettas is the senior vice president and chief medical officer of CareAllies. Providing clinical expertise to CareAllies service solutions and leading local market clinical operations, Nick is responsible for clinical strategy supporting CareAllies medical and population health services. Nick also designs innovative clinical models that assist providers with improving quality health outcomes and cost management.

Prior to joining CareAllies, Nick provided market clinical leadership for Cigna's delivery system alliances and value-based collaborative arrangements across the country, bringing deep expertise that will directly benefit CareAllies customers and the patients they serve. In 2004, he was awarded the Cigna HealthCare President's and Pinnacle awards in recognition of work to define and value the integration of medical and pharmacy benefits.

Before his career with Cigna, Nick served as CEO, president and medical director of Commonwealth Care of Virginia, where he initiated and developed a multi-practice Independent Physician Association (IPA) as Central Virginia's first physician-led IPA. He also served on the faculty at Medical College of Virginia and as medical director for NYLCare during this time.

Nick has more than 35 years of clinical, teaching and administrative experience. He earned a medical degree from the University of Toronto, Faculty of Medicine.

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Beckie Croes

Senior Vice President, Provider Engagement

Beckie Croes leads physician engagement for CareAllies. Previously, Beckie was the Vice President of Delivery System for Cigna-HealthSpring, responsible for National Contracting, Provider Engagement Strategies and Delivery System Enablement. She had operational leadership responsibility for incentive agreement structures, hospital contracting strategies, and technology solutions that enable scalability. She led the development of a management service organization stand-alone product offering to support delivery system needs and other development opportunities.

Beckie has held numerous leadership positions at Cigna-HealthSpring in local network operations, corporate contracting, pharmacy operations and business development. Before joining Cigna-HealthSpring, she held several leadership positions with North American Medical Management, including network operations, payer contracting and business transformation roles. Beckie has a Bachelor of Science degree in Economics and Political Science from Texas A&M University.

Headshot of Brian Ough

Brian Ough

Chief Financial Officer

Brian Ough leads financial strategy and execution for CareAllies, focusing on creating financial strategies for our provider partners that enable their success in value-based arrangements. His expertise includes developing and implementing value-based arrangements with both employed and independent providers.

Prior to joining CareAllies, Brian was the Chief Financial Officer for Cigna Medical Group, a multi-specialty practice as well as the Cigna Medicare Advantage plan of Arizona. His vast experience with Cigna includes financial planning and analysis, capital planning, medical economics, underwriting and risk management. Brian has a Bachelor of Science degree from the University of Hartford in Connecticut.

Headshot of Allen Perez, MBA

Allen Perez, MBA

Senior Vice President, Sales and Contracting

Allen Perez leads partnership development efforts with providers at CareAllies. He has a long track record of working with providers to develop strategies and partnership arrangements that accelerate their transition and increase their success in value-based payment arrangements.

Prior to his role at CareAllies, Allen led new Market Development for Cigna-HealthSpring, including its work to establish new partnerships with physician groups and delivery systems. Earlier in his tenure, Allen oversaw the physician management company for one of Cigna-HealthSpring's most successful provider partnerships. Before joining Cigna-HealthSpring, he served in strategic and operational roles at Hospital Corporation of America (HCA).

Allen holds a Bachelor of Science in Psychology from Sam Houston State University and Master of Business Administration from Our Lady of the Lake University in San Antonio, Texas.

Headshot of Rajesh Shrestha

Rajesh Shrestha

Senior Vice President & General Manager, Population Health
President, Alegis Care

Rajesh Shrestha leads population health management, including strategy and operational execution, and Alegis Care, a home-based care delivery business of CareAllies. He is responsible for the capabilities and services that help providers manage the longitudinal care of their patients and the success of their value-based models. Rajesh oversees clinical operations, practice transformation strategy, care delivery model development, provider population health analytics, patient health engagement, clinical operating effectiveness and the administration of ACO programs from CMS.

Rajesh recently served as Chief Operating Officer for Cigna Medical Group (CMG), a multi-specialty group practice, where he led operations, business development ventures and strategic partnerships. Rajesh also led Cigna HealthCare of Arizona to a 5 Star Medicare Plan Rating. He was responsible for practice transformation of CMG's care delivery model to a team-based care model and led operations of productizing CMG for multiple payer segments.

As Vice President, Accountable Care Organization Development for Cigna Medical Group, Rajesh transformed CMG into an Accountable Care market leader. He has also held the positions of Vice President, Quality and Informatics for both Cigna Medical Group and Cigna Onsite Health. Prior to joining Cigna, Rajesh spent over a decade working closely with health plans and providers as well as state and federal agencies to set up quality programs, performance measure validation, value-based purchasing and network arrangements.

Rajesh holds a Bachelor of Science and a Masters of Public Health from the University of Arizona. He is also an alumnus of the University of California-Berkeley, Haas School of Business and a graduate of the Global Leadership 2030 Program at the Tuck School of Business at Dartmouth College.

Headshot of Dave Zegzdryn

Dave Zegzdryn

Chief Information Officer

As the chief information officer, David Zegzdryn leads the technology roadmap for CareAllies, ensuring the quality and timeliness of technology deployment to CareAllies customers.

Prior to joining CareAllies, David was a senior director at Cigna, responsible for information technology capabilities supporting customer health engagement initiatives. Within this role, David implemented enterprise technology solutions in utilization and case management, wellness and disease management, population health stratification and customer health incentives.

David has also held a number of IT leadership positions at Cigna focusing on optimizing the quality and effectiveness of enterprise technology in the marketplace. Prior to joining Cigna, David worked as an information management consultant in health care, reinsurance, electric utilities and manufacturing. David has a degree in Business Administration from Bryant University.