Despite their best efforts, UW Medicine has not yet been able to reach fair and sustainable agreements with Aetna that ensure continued access to care and are in the best interests of patients. Effective June 1, 2025, UW Medicine’s contracts with Aetna for Medicare Advantage and Commercial services have expired and we are now out of network with Aetna. Learn more about what this means for you and what you should do next.
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Valley Medical Group Provider
Provider Bio
Garland Castañeda, MD, is a board-certified internal medicine physician. He specializes in treating hospitalized patients with acute care needs. This includes a wide range of conditions including congestive heart failure, pneumonia, diabetes and strokes. He has a particular interest in gastrointestinal disease and has published a few journal articles in this area.
Dr. Castañeda grew up in Modesto, California before attending Princeton University and getting his medical degree from University of Colorado – Denver. He completed his residency at Highland Hospital in Oakland, CA where he served a socioeconomically diverse patient population. Following residency he worked at the nearby Alameda Hospital including during the COVID-19 pandemic. When he is not working at the hospital he can usually be found working on his small business, a horse boarding farm.
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Scheduling & Locations
This provider works at the location(s) listed below. If you haven’t had an appointment with this provider before, please look near the provider’s photo above to make sure they are accepting new patients. Telehealth appointments are available for some conditions. Please call the clinic to learn more about telehealth options.
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