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Meet the team


OptumRx Consultant Relations Team

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Don Houchin, R.Ph.

National Vice President, Consultant Relations

Don has responsibility for the Consultant Relations team and brings business development leadership to the Consultant Relations group. Don joined OptumRx through its acquisition of Catamaran, where he was responsible for leading sales for the Employer, State, Government, and Labor and Trust markets.

Don has more than 30 years of experience in the PBM, retail pharmacy, and healthcare markets and brings extensive sales and management experience to OptumRx. Don holds a Bachelor of Science degree in Pharmacy from the University of Houston.

Sharon M. Montgomery, R.Ph., MA

Vice President, Consultant Relations

Sharon has been with OptumRx since March 2014 and serves as the chair of the OptumRx Consultant Advisory Board.

Sharon brings a rich legacy of experience to OptumRx, having held clinical and leadership positions in managed health care pharmacy, the consulting industry, the pharmaceutical industry, hospital pharmacy and the home health care industry.

Prior to joining OptumRx, Sharon was the National Vice President for Public Sector Pharmacy Development for UnitedHealthcare. Sharon received her B.S. in Pharmacy from Howard University in Washington, D.C. and a Masters’ in Health Care Administration from Central Michigan University.

Mark Prueter

Vice President, Consultant Relations

Mark will develop and manage relationships with national consultant firms, and will build and maintain relationships within the consulting and broker communities. Mark has 28 years of healthcare sales and business development experience in the PBM, pharmacy services and pharmaceutical industries. Mark joins us from Prime Therapeutics, where he led an account management team serving Medicare and Medicaid programs. He joins Sharon Montgomery in supporting the OptumRx Direct business.

Caroline Atwood, Pharm.D.

Vice President, Consultant and Broker Relations UHC/UMR

Caroline brings more than 20 years' experience in managed health care including pharmacy benefits management, retail pharmacy, specialty pharmacy and health plans. Caroline will build and maintain relationships within the consulting and broker communities, specifically serving UnitedHealthcare Pharmacy and UMR.

Caroline is a national thought leader in pharmacy healthcare where she serves as the Co-Chair for the Academy of Managed Care Pharmacy (AMCP) Public Policy Committee and the Chair for the Academy of Managed Care for California Pharmacists Association (CPhA). Caroline received her Doctor of Pharmacy degree from the University of Southern California.

Robyn Schumacher

Senior Director, Broker and Consultant Relations

Robyn will develop and manage relationships with national middle market consultant groups, other regional and boutique firms, and pharmacy consultants specializing in health plans for OptumRx Direct Business. Robyn has been with Optum for 12 years and was formerly national sales manager for mid-market, carve-in UnitedHealthcare and UMR.

Darlene Angell

Director, Consultant Relations Business Development

Darlene manages and monitors the OptumRx broker and consultant internal resources, engagement strategy and activity to drive business development through these channels. Darlene brings more than 20 years of UnitedHealthcare experience, most recently as National RFI Manager on the National Proposal Services team.

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