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Leadership Team

Meet the Banner|Aetna Leadership Team

Thomas J. Grote

Chief Executive Officer

Thomas J. Grote leads the newly formed Banner|Aetna joint venture as chief executive officer. He’s responsible for building a more sustainable model of care enhanced by a distinctive member experience for joint venture members throughout Arizona. Grote is also responsible for enhancing product offerings, while lowering costs, creating a clinically integrated network and growing Banner|Aetna’s footprint throughout the state.

Prior to his current role, Grote managed operations of the Arizona and New Mexico markets for a year and a half. He also provided oversight of the west territory markets, including California, Alaska, Oregon Washington, Colorado, Nevada and Utah.

Before moving to Arizona, Grote served as president of Aetna's Capitol market, which includes Maryland, DC, and Virginia, from 2010-2015. 

As the former local market president, Grote’s responsibilities included: development and execution of the local market strategy, management of a geographic P&L covering all business in the market, oversight of local market network design and contracting, and management of local market sales. Grote has robust experience in the development of Accountable Care Organization relationships. He also participated on the development team for Innovation Health, the Aetna and Inova joint venture, and currently serves on its board.  More recently, Grote played an instrumental part in the formation of Banner|Aetna. 

Grote joined Aetna in 1987 as an employee benefits representative, and has held a variety of sales and profit and loss management roles throughout his 30-year career.

Grote is a graduate of the University of Notre Dame, where he received his Bachelor of Arts in Finance. And in 1988, he received his Certified Employee Benefits Specialist designation.

Dr. Robert Groves

Chief Medical Officer

Dr. Groves received his M.D. degree from the Medical College of Georgia and completed Internal Medicine training at the University of Texas Southwestern Medical Center. Subsequently he completed fellowships in Critical Care Medicine and Pulmonary Diseases at the University of Alabama at Birmingham. As Vice President of Health Management, Banner Health and Chief Medical Officer, Banner Health Network, Dr. Groves’ responsibilities include, physician leadership in population health management as well as delivering on clinical performance and utilization management in the volume to value transition for a network of over 3,000 employed and aligned physicians with over 400,000 covered lives.  

Additionally Dr. Groves serves as Chief Medical Officer, Banner|Aetna, a new insurance company in Arizona that leverages the strengths of both the number one healthcare delivery organization in Arizona (Banner Health) along with a highly respected and successful national insurance brand (Aetna). Each company is empowered to do what it does best in a single, tightly aligned entity.

Dan Keller

Chief Financial Officer

Dan Keller joined Banner|Aetna as the Chief Financial Officer in August of 2017. In this role, Keller will oversee the financial performance of Banner|Aetna and support the CEO in driving the strategic plan.

Keller joins Banner|Aetna with over 20 years of health care management experience primarily in finance, actuarial, and underwriting roles.  Previously, he served as CFO of Aetna’s Arizona, Colorado, and New Mexico markets. Prior to relocating to Arizona in 2014, Dan was the Head of America’s pricing for Aetna International based in Hartford, CT.

Dan is a graduate of the University of Wisconsin – Eau Claire, where he received his Bachelor of Science in Mathematics.

Joanne Mizell

Chief Operating Officer

Joanne Mizell joined Banner|Aetna as Chief Operating Officer in February 2018, with over 20 years Aetna experience and nearly 30 years in the Employee Benefits industry. In this role, and as a member of the executive leadership team, Mizell will oversee operations of the organization and support the execution of the strategic goals set by Banner|Aetna’s Board of Directors and Chief Executive Officer.

Mizell is a proven leader who has consistently delivered growth to various organizations and market segments by developing strong teams, crafting creative strategies and fostering deep community and client relationships. As Chief Operating Officer of Banner/Aetna, Mizell leverages her experience and well-established network in Arizona to execute the organization’s mission of helping employers improve the health and well-being of their workforce, while simplifying the coverage-to-care-to-payment of health care for its members.

Mizell started her career in Orange County and Los Angeles, California before relocating to Arizona in 1998. Mizell’s previous roles at Aetna Included building sales and service teams for large employers, managing the growth, client satisfaction, and profit & loss for a four state market that included Arizona. Mizell also led the creation and build of a new product portfolio for Aetna's National Accounts segment, simplifying the selection, purchasing and administration of voluntary products for Aetna’s largest clients. Outside of Aetna, Mizell was a broker/advisor at an international insurance brokerage firm, where she served as lead health care and benefits design strategist for larger, complex clients.

Mizell has also worked in both paid and volunteer leadership roles for several humanitarian and animal protection organizations. She continues to be actively involved in formal local and state advocacy aimed at improving lives through proposed legislative and policy changes in Arizona and in the United States.

Prior to beginning her career at Aetna, Mizell studied Business Administration at California State University at Fullerton, while working full-time in the employee benefits department of Hughes Aircraft Company. Making lives better by delivering best-in-class employee benefits has been her career journey ever since. Mizell’s role at Banner|Aetna takes that experience and passion to the next level.

Transforming health care, together

Together, Banner Health and Aetna aim to offer more efficient and effective patient care at a more affordable cost. We join the right medical professionals with the right technology, so patients benefit from quality, personalized health care designed to help them reach their health ambitions.

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Banner|Aetna is the brand name used for products and services provided by Banner Health and Aetna Health Insurance Company and Banner Health and Aetna Health Plan Inc. Health benefits and health insurance plans are offered and/or underwritten by Banner Health and Aetna Health Insurance Company and/or Banner Health and Aetna Health Plan Inc. (Banner|Aetna). Each insurer has sole financial responsibility for its own products. Banner Health and Aetna Health Insurance Company and Banner Health and Aetna Health Plan Inc. are affiliates of Banner Health and, of Aetna Life Insurance Company and its affiliates (Aetna). Aetna provides certain management services to Banner|Aetna.

This material is for information only and is not an offer or invitation to contract. An application must be completed to obtain coverage. Health benefits and health insurance plans contain exclusions and limitations. Providers are independent contractors and not our agents. Provider participation may change without notice. We do not provide care or guarantee access to health services. Not all health services are covered. See plan documents for a complete description of benefits, exclusions, limitations and conditions of coverage. Plan features and availability are subject to change and may vary by location. Information is believed to be accurate as of the production date; however, it is subject to change.

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Banner|Aetna is the brand name used for products and services provided by Banner Health and Aetna Health Insurance Company and Banner Health and Aetna Health Plan Inc. Health benefits and health insurance plans are offered and/or underwritten by Banner Health and Aetna Health Insurance Company and/or Banner Health and Aetna Health Plan Inc. (Banner|Aetna). Each insurer has sole financial responsibility for its own products.  Banner Health and Aetna Health Insurance Company and Banner Health and Aetna Health Plan Inc. are affiliates of Banner Health and, of Aetna Life Insurance Company and its affiliates (Aetna). Banner Health provides certain management services to Banner|Aetna.

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