Leadership
Guided by a steadfast commitment to pioneering excellence, the visionary leadership at the helm of the world's foremost Integrative Medicine Center not only shapes the trajectory of modern healthcare but also embodies the profound belief that the advancement of medicine heralds a brighter, healthier future for all.
Stephen Dahmer, MD
Director of the Andrew Weil Center for Integrative Medicine / College of Medicine Dean of Wellness
Andrew Weil, MD
Founder of the Andrew Weil Center for Integrative Medicine / Professor of Medicine and Public Health / Lovell-Jones Endowed Chair in Integrative Medicine
Scott Gimple, MBA
Executive Director
Ann Marie Chiasson, MD MPH ABOIM
Director of Education / Fellowship Program Director / Associate Professor of Clinical Medicine
Randy Horwitz, MD, PhD
Medical Director / Director of Integrative Medicine Distinction Track / Professor, Medicine
Victoria Maizes, MD
Head of Alumni Relations, Founding Executive Director / Andrew Weil Endowed Chair in Integrative Medicine / Professor, Medicine / Professor, Public Health
Mari Ricker, MD
Director of Integrative Medicine in Residency and Professor of Family and Community MedicineMolly Burke, CMT, MFA
Director of Online Education / Director of IHW ProgramsDenise Millstine, MD
Associate Director of the Fellowship in Integrative MedicineDavid O. Garcia, PhD, FACSM
Associate Director of ResearchStephanie Feder
Sr. Director of Business DevelopmentNic Dahl
Director of Communications, Marketing & EventsStephen Dahmer, MD
Stephen Dahmer, MD is our new director at the Andrew Weil Center for Integrative Medicine and the chief of Integrative Medicine at University of Arizona College of Medicine - Tucson. He is a recognized expert in the field of Integrative Medicine who seamlessly integrates clinical expertise, research initiatives, and entrepreneurial leadership. He comes to the Center from a distinguished career reinventing healthcare approaches and shaping holistic healthcare paradigms including as Lead Physician at Iora Health, Chief Medical Officer at Goodness Growth and his most recent position as founding Primary Care Physician at Sana Care.
Dr. Dahmer's exploration of medicinal plant uses in diverse cultures has led him from Brazil's slums, to Maori clinics in New Zealand, and to serving as a hospitalist for the Navajo Tribe in Arizona. His academic pursuits include active roles at Mount Sinai School of Medicine and Albert Einstein College of Medicine. His research, encompassing clinical trials on medical plants, emphasizes a compassionate and integrative approach to clinical care.
Dr. Dahmer completed his medical school training at the University of Wisconsin-Madison. He chose to attend a family medicine residency at Beth Israel Hospital in New York due to his dedication to comprehensive patient care, particularly in underserved communities. He completed his fellowship in Integrative Family Medicine at the Andrew Weil Center for Integrative Medicine at the University of Arizona. He then practiced integrative primary care at the Beth Israel Continuum Center for Health and Healing. Dr. Dahmer's volunteer work and advisory roles for healthcare ventures also reflect his commitment to community welfare.
Dr Dahmer's professional journey epitomizes a nuanced approach to Integrative Medicine with an emphasis on blending tradition and innovation, compassionate patient care, and a global perspective.
Scott Gimple, MBA
Scott Gimple is the Executive Director at the University of Arizona Andrew Weil Center for Integrative Medicine (AWCIM), where he collaborates with the Director to establish the strategic vision and roadmap for expanding the Center and advancing Integrative Medicine.
Prior to his appointment at AWCIM, Scott garnered extensive experience in leadership across varied industries. He served as the President and CEO of Ability Dogs of Arizona, a nonprofit organization based in Tucson. Preceding this, he dedicated thirteen years to the American Youth Soccer Organization (AYSO), where he held the positions of Director of Finance and Operations and Deputy Executive Director, overseeing operations for an organization with 800 programs and serving over 400,000 children, and with annual revenue of just over $80 million.
Scott's professional trajectory encompasses a sixteen-year tenure within the entertainment sector. At Universal Studios Hollywood, Recreation Division, he fulfilled the role of Corporate Security Director. Additionally, he played a pivotal role as a member of the startup team at DreamWorks S.K.G., assuming responsibilities as Head of Security, Safety, and Travel.
Educationally, Scott is an alumnus of the University of Arizona, where he obtained a Bachelor of Arts degree in Political Science. He holds a Master's in Business Administration with a concentration in Finance from Pepperdine University.
Mari Ricker, MD
Director of Integrative Medicine in Residency and Professor of Family and Community Medicine
Dr. Ricker graduated from the University of Virginia with a BA in Biology and from the University of Arizona with her degree in Medicine. She completed her Family Medicine Residency at Oregon Health and Science University, in Portland Oregon. After residency, Dr. Ricker served as Chief Resident and Faculty Development Fellow. During this fellowship year Dr. Ricker also completed the Fellowship in Integrative Medicine though the Andrew Weil Center for Integrative Medicine and is certified as a diplomate of the ABOIM.
Dr. Ricker is a Professor in the Department of Family and Community Medicine. She practices outpatient Family Medicine. She is the Director for the Integrative Medicine in Residency Program at the Andrew Weil Center for Integrative Medicine.
Robert (Rocky) Crocker, MD
Robert Crocker joined the Arizona Center for Integrative Medicine in 2012. His first task was to open the Integrative Health Center in Phoenix and is instrumental in future health centers. He has been involved in the development of the Integrative health and lifestyle program, has been a key leader for the Integrative Health Coaching Program, and is deeply involved in the IMPACT study for clinical outcomes.
Prior to coming to AzCIM, Dr. Crocker was with American Specialty Health (ASH) as its chief medical officer. He was involved in the management and ongoing development of the company's medical management programs and products, as well as oversight of ASH's clinical service operations.
Dr. Crocker had a distinguished career in private practice and as national medical director for both UNICARE/Cost Care and WellPoint Health Networks. He also previously served as chief of staff at River Oaks Hospital in Jackson, Mississippi, and as a part-time clinical instructor in the University of Mississippi's family medicine program.
Dr. Crocker is a fellow of the American Academy of Family Practice and has held leadership positions in many industry organizations, including America's Health Insurance Plans (AHIP) and the American Association of Preferred Provider Organizations (AAPPO). In addition, Dr. Crocker served on the board of directors of URAC from 2001 through 2010 including serving as chairman of URAC's board of directors.
Dr. Crocker holds a bachelor's of science degree in chemistry from Mississippi College, he later graduated from the University of Mississippi School of Medicine and he is a graduate of the Fellowship in Integrative Medicine at the University of Arizona. He has served as a health consultant, provided oversight of previous humanitarian relief efforts in Central Asia, and more recently has been working with aboriginal communities in Australia.
Devorah Morris Coryell
Ms. Coryell has been director of IMER since 2018, and has served as faculty and advisor to the AWCIM Medicine from its inception. She has been a pioneer, educator and author in the fields of health and wellness since developing and directing the original wellness/education program at Canyon Ranch Wellness Resorts in Tucson, Az. (1982) and Lenox, Mass. (1989). She went on to create wellness programs at The Pritikin Longevity Institute (Avventura, FL.) and King Ventures (San Luis Obispo, CA.). In the corporate sector, she has been instrumental in developing corporate wellness programs for Four Seasons Resorts; Sandler Capital Management; Bramalea Ltd and Watermark Corp. Upon leaving Canyon Ranch, she founded and directed the Shiva Foundation, a not-forprofit dedicated to education and counseling for those engaged with grief and loss; and authored Good Grief: Healing through the Shadow of Loss (1997) which continues to be used in training grief educators and counselors. Ms. Coryell has a private practice counseling individuals and families facing catastrophic life events.
Molly Burke, MFA
Molly K. Burke joined the Andrew Weil Center for Integrative Medicine (AWCIM) at the University of Arizona in February of 2000. She has enjoyed being a part of all aspects of creating and delivering online educational offerings. As Director of Online Education since 2012, she works with program directors, faculty, and the development team to design, create, improve and maintain our many and diverse online educational offerings. She is passionate about driving accessibilty of integrative health and medicine education to as many healthcare professionals as possible with a core focus on self-care and sees this as critical to heal the healthcare system.
Molly designed and directs the Integrative Health and Wellness program (IHeLp), an 8-month interprofessional online certificate program that launched in 2014, the Integrative Health and Wellness Coaching certification, one of the first NBHWC approved programs, that ran from 2015-2025, and the Wellness & Lifestyle Series open to anyone passionate about integrative health and wellness, that launched in 2019.
Additionally, she has led efforts at AWCIM with offerings for the public - the largest being My Wellness Coach, a mobile health app based on motivational interviewing, integrative principles, and health coaching. She has engaged in researching the app across a diverse population and how it supports health behavior changes. She led the development and launch of CanHEAL, an integrative cancer resource toolkit for patients, caregivers, and health providers.
Prior to joining the Center, Molly earned a 1000 hour certification in massage therapy and practiced as a licensed massage therapist in the state of Arizona for 7 years. She has a bachelor's degree in media arts and an MFA in creative writing - both from the University of Arizona. She has been a board member of IM4US (2018-2020).
Stephanie Feder
Stephanie Feder is the Sr. Business Development Director for The Andrew Weil Center for Integrative Medicine. She is responsible for the strategic vision and execution of the Center's Marketing efforts, partnerships, experiential events, and business expansion. Stephanie comes with over 10 years of experience in high-growth start-ups. During her 6 years at Uber, as one of the first 500 employees, she launched 10 US markets, worked/lived in China on the National Marketing Team working on experimental and experiential marketing campaigns, and sat on the Business Development team negotiating and managing West Coast Professional Sports Partnerships. Most recently she was the Vice President of Business Development for Qwick, where she was responsible for new market launches, corporate partnerships, revenue generation, and sales strategy. Stephanie is a University of Arizona graduate, and she earned her degree in Regional Development and Business Administration.
Nic Dahl
Nicole "Nic" Dahl is the Director of Communications, Marketing, and Events for the Andrew Weil Center for Integrative Medicine. She leads the Center's brand strategy, content development, press relations, and signature events—helping shape how integrative medicine is communicated to the world. Nic brings more than 15 years of experience in brand storytelling, digital marketing, and strategic communications. Her leadership background spans government, nonprofit, hospitality, and healthcare. Before joining AWCIM, Nic built and directed communications programs across mission-driven organizations, specializing in translating complex, clinical, and content into compelling narratives that resonate with diverse audiences. Nic is a University of Arizona graduate with deep expertise in positioning brands and thought leaders at the intersection of healthcare, education, and social impact.
Andrew Weil, MD
Founder and Director of the Andrew Weil Center for Integrative Medicine at the University of Arizona holds the Lovell-Jones Endowed Chair in Integrative Medicine and is a Clinical Professor of Medicine and Public Health. Dr. Andrew Weil is the leading figure in integrative medicine, renowned for his integrative approach to health and wellness. He was educated at Harvard University and combines conventional and evidence-based alternative medicine practices to promote overall well-being. Dr. Weil advocates for natural remedies, emphasizing herbal supplements, dietary changes, and mind-body practices. His focus on preventive health measures and proactive lifestyle changes has earned him credibility and popularity among those seeking evidence-based integrative approaches to health. Through his accessible communication style via books, articles, lectures, and media appearances, Dr. Weil inspires individuals worldwide to take control of their health and embrace a holistic approach to wellness.
Ann Marie Chiasson, MD MPH ABOIM
Ann Marie Chiasson, MD, MPH is the Director of the Fellowship at the University of Arizona Andrew Weil Center for Integrative Medicine and Professor of Clinical Medicine in Family and Community Medicine in the College of Medicine. She is board-certified in Family Medicine, Integrative Medicine and Hospice and Palliative Medicine. She earned a Master’s in Public Health from Johns Hopkins Bloomberg School of Health and an MD with honors from Dalhousie School of Medicine. She is a 2004 alumnus of the University of Arizona Fellowship in Integrative Medicine has been on faculty since 2005. Dr. Chiasson currently serves as the past president of the American Board of Physician Specialties Chair and was a previous chair of the American Board of Integrative Medicine. She has worked in Integrative Medicine, Family Practice, Addiction Medicine, and Hospice and Palliative care. She is an a nationally recognized speaker on Integrative Medicine, Integrative Pain Management, End of Life care, Mind Body Medicine, and Energy Healing Techniques from a multi-cultural perspective.
Lise Alschuler, ND, FABNO
Associate Director of the Fellowship in Integrative Medicine at the Andrew Weil Center for Integrative Medicine. She is a leading naturopathic doctor specializing in integrative oncology. She combines conventional cancer treatments with evidence-based natural therapies, emphasizing personalized care for patients. Dr. Alschuler is an educator and author, known for empowering patients and healthcare professionals with knowledge about holistic cancer care. Her approach integrates lifestyle interventions, nutrition, botanical medicine, and mind-body techniques, making her a respected authority in the field.
Victoria Maizes, MD
Internationally recognized as a leader in integrative medicine, she stewarded the growth of the Andrew Weil Center for Integrative Medicine. She is the founding co-chair of the Consortium of Academic Health Centers for Integrative Medicine education committee. Dr. Maizes speaks worldwide to audiences on integrative medical education, women's health, healthy aging, nutrition, and cancer. She has published numerous articles and book chapters on integrative medicine and is the co-editor of the Oxford University textbook Integrative Women's Health and the author of Be Fruitful: The Essential Guide to Maximizing Fertility and Giving Birth to a Healthy Child. Dr Maizes is the Body of Wonder podcast co-host with Dr Andrew Weil. Her groundbreaking work, vibrant advocacy, and empowering guidance have made her a true icon in the field, inspiring both patients and healthcare professionals worldwide.
Randy Horwitz, MD, PhD
Medical Director of the Andrew Weil Center for Integrative Medicine and a Professor of Medicine at the University of Arizona who received an MD from the University of Illinois, and a PhD (Immunology & Molecular Biology) from the University of Florida. He completed postdoctoral research training at the National Institutes of Health, residency training in Internal Medicine at University Hospitals, Cleveland (Case Western Reserve University), and a three-year fellowship in Allergy & Clinical Immunology at the University of Wisconsin. Dr. Horwitz also completed a Residential Fellowship in Integrative Medicine at the University of Arizona, focusing on mind-body approaches to illness. He is triple board-certified in Internal Medicine, Allergy & Clinical Immunology, and Integrative Medicine.
In 2012, his textbook Integrative Rheumatology was released (Oxford University Press). In 2016, Dr. Horwitz was appointed to the National Board of Medical Examiners (NBME) and USMLE test committee for Immunology. He also served as the Founding Chair of the American Board of Integrative Medicine (ABOIM). He was also recently named an Adjunct Professor of Medicine, University of Western Australia Medical School where he is helping to develop a Global Medical School.
David O. Garcia, PhD, FACSM
Dr. David O. Garcia, PhD, FACSM, serves as Associate Director of Research for the University of Arizona Andrew Weil Center for Integrative Medicine, where he guides the expansion and coordination of integrative medicine research across the university. His focus centers on patient outcomes, pragmatic n-of-1 studies, and community-to-clinic care models, alongside mentoring junior researchers and strengthening the research infrastructure of the Center's Fellowship program.
An associate professor in the Zuckerman College of Public Health, Garcia is a nationally renowned researcher in obesity, cardiometabolic disease, and health disparities. He built one of the Southwest's most robust community-driven research programs, enrolling more than 5,800 participants—primarily of Mexican-origin and Indigenous descent—within five years and delivering over $3.5 million in health services to underserved populations in southern Arizona.
His ongoing work at AWCIM includes a Coors Foundation-supported sleep intervention using a Delphi consensus method and mobile health app, a youth yoga collaboration with Tucson elementary schools, active studies on metabolic-associated fatty liver disease and genetic risk in Mexican-origin communities, and capacity-building efforts in the Navajo Nation.
Denise Millstine, MD
Denise Millstine, MD is the Associate Director of the Integrative Medicine Fellowship at the University of Arizona Andrew Weil Center for Integrative Medicine and an Associate Professor of Medicine.
She is a board-certified internist focused on women’s health and completed the University of Arizona Integrative Medicine Fellowship in 2011.
Dr. Millstine previously served as Director of the Integrative Medicine Section at Mayo Clinic Arizona, where she was also the Medical Director of the Office of Joy & Wellbeing. She founded and hosted the narrative medicine health education podcast Read.Talk.Grow and partnered with Mayo Clinic Press for their Women's Health Channel and on the Mayo Clinic Health Letter.
Her clinical, educational, and scholarly work focuses on integrative medicine, women's health, menopause, cancer support, well-being, and narrative medicine. She is an award-winning educator and nationally recognized speaker who has authored numerous peer-reviewed publications, book chapters, and educational resources. Dr. Millstine is passionate about mentoring clinicians and helping fellows develop the knowledge, skills, and presence needed to deliver evidence-informed, whole-person care.