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About Us

Our Executive Team

Jamie Reynoso
Jamie ReynosoChief Executive OfficerMemorial Hermann Health Solutions, Inc.Houston, TX

Jamie Reynoso joined the Memorial Hermann Health Plan team as the Chief Operating Officer in April 2016. In this role, she is responsible for the oversight and management of the health plan day-to-day operations as well as key external strategic partner relationships. In October 2017, Jamie was promoted to Chief Executive Officer.

Previously, Jamie was RVP, Payer Strategy and Operations – Midwest Region for Catholic Health Initiatives (CHI) as well as Interim COO for its health plan subsidiary, Prominence Health. Jamie was with CHI for three and a half years. Prior to CHI, Jamie was with UnitedHealth Group for 16+ years in various roles. Jamie has over 25 years’ experience in the healthcare industry with a strong background in payer and provider contracting, ACO/CIN organizations, product development, product management, compliance, reimbursement methodologies, system integrations, and service operations.

Although born in Nebraska, Jamie moved to South Texas to attend high school and college. Jamie received a Bachelor’s of Business Administration (B.B.A.) from Texas A&M University – Kingsville.

Glen Dawes
Glen DawesVice President of FinanceMemorial Hermann Health Solutions, Inc.Houston, TX

Glen Dawes joined the Memorial Hermann Health Solutions team as Vice President of Finance in October, 2016. In this role, he is responsible for the leadership, vision and formulation / implementation of financial, operational and fiscal policies and control procedures. In addition, Glen works closely with the senior executive team of the Health Plan along with the corporate executive team of Memorial Hermann Health System. Additional responsibilities include assisting in developing, implementing and monitoring the Health Plan's strategic plan while also overseeing the daily operations of the Finance, Underwriting and Medical Data Management functions, including systems.

Before joining Memorial Hermann, Glen was the Vice President Controller of the Southern California region for Kaiser Permanente Health Plan. In this position, Glen was directly responsible for leading a 125-member financial accounting team as they managed a $24B operating division. Glen was with Kaiser Permanente for a total of 8+ years in various roles. He also previously held the position of Vice President of Corporate Support Operations (CSP) at Washington Mutual.

Glen grew up in central Florida. He holds a finance degree from the University of Central Florida and an MBA from Nova Southeastern University and is a licensed CPA in the state of Georgia.

Kristyn Greifer
Kristyn GreiferChief Medical OfficerMemorial Hermann Health Solutions, Inc.Houston, TX

Dr. Kristyn Greifer currently serves as The Memorial Hermann Health Plan Chief Medical Officer. She joined in June, 2016. In this role, she is responsible for clinical policies, medical management (including prior authorizations and medical review), pharmacy services and quality improvement.

Before joining Memorial Hermann, Kristyn was the Vice President, Population Health Management at WellStar Health System in Marietta, Georgia. She was responsible for building the Population Health program in support of the WellStar Accountable Care Organization, Piedmont WellStar Health Plan and the WellStar Clinically Integrated Network. Dr. Greifer is a well-respected speaker on the topic of Population Health. Dr. Greifer joined WellStar in 2013. Prior to this she spent 15 years with Kaiser Permanente in Atlanta, Georgia as a practicing primary care physician, palliative care physician and hospitalist with escalating leadership roles including Associate Medical Director for Primary and Specialty Care, and Associate Medical Director for Hospital, Acute Care and Resource Stewardship.

Kristyn grew up in Pennsylvania. She received her bachelor’s degree in Chemistry at Temple University in Philadelphia. Dr. Greifer received her MD and completed her Internal Medicine Residency at The University of Pennsylvania School of Medicine.

Jason Nichols
Jason NicholsMedical DirectorMemorial Hermann Health Solutions, Inc.Houston, TX

Dr. Jason Nichols joined Memorial Hermann Health Plan as Medical Director in early 2018. Dr. Nichols is a graduate of the University of Louisville is a pediatric hospitalist. Dr. Nichols spent five years as a hospitalist in South Bend, Indiana, and at Memorial Hermann Memorial City. He most recently served as the South Regional Case Management Medical Director with the Memorial Hermann Care Management team. He has worked closely with the health plan medical management team and our CMO, Dr Kristyn Greifer over the last two years. He is a strong patient advocate and is interested in improving access to care and partnering with our network physicians on outcomes. Dr. Greifer and Dr. Nichols will be working together to ensure our members receive high quality care. Dr Nichols lives in the Katy area with his wife and son.

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