Meet the Team
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David T. Ahn, MD
- Endocrinologist / Bariatrician
- Program Director at the Mary and Dick Allen Diabetes Center
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Mackenzie Brewer, RD, CDCES
- Certified Diabetes Care and Education Specialist
- Registered Dietitian
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Cristi Bristol, BSN, RN, CDCES
- Certified Diabetes Care and Education Specialist
- Registered Nurse
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Karen Engelman
- Manager of Operations
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Ellie Fong, PA-C, CDCES
- Certified Physician Assistant
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Meghan Gonzalez, RD, CDCES
- Certified Diabetes Care and Education Specialist
- Registered Dietitian
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Ruth Hwang, PA-C
- Physician Assistant
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Kris V. Iyer, M.D., F.A.C.P., F.A.C.E
- Senior Vice President & Chief Physician Development Officer
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Samantha Markovitz, NBC-HWC
- Supervisor, Health and Wellness Initiatives
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Veronica Merino, LVN
- Licensed Vocational Nurse
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Christine Miller
- Front Office Supervisor
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Kristen Nguyen, MD
- Endocrinologist
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David Pham, PharmD, BCPS, DCES, BC-ADM
- Pharmacist
- Diabetes Care and Education Specialist
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Michelle Speetzen, BSN, RN
- Inpatient Diabetes Educator RN
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Elizabeth Vitale, RD, CDCES
- Certified Diabetes Care and Education Specialist
- Registered Dietitian
- Training in Adult Weight Management
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Valerie Wolf, BSN, RN, RD, CDCES
- Research Coordinator
- Certified Diabetes Care and Education Specialist
- Registered Nurse