We are pleased to announce that a new agreement has been reached with Aetna. This allows Valley to continue to be an in-network provider for Aetna-insured patients and will cover services provided since previous contracts ended June 1, 2025. We understand how important it is for our patients to retain in-network access to the doctors, programs, and expert care teams they know and trust. Thank you for your patience throughout this process.
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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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