The Indian Health Service is seeking qualified firms to provide 24/7/365 synchronous audio-video telebehavioral health services for emergency department patients with suicide attempts, acute psychiatric crises, substance-related emergencies, and co-occurring disorders. Services must be performed at five specified hospitals: Pine Ridge, Rosebud, and Eagle Butte in South Dakota, and Fort Yates and Belcourt in North Dakota. The contractor must supply licensed behavioral health clinicians and prescribing providers, with coverage required every day of the year. The anticipated contract is a firm-fixed-price, performance-based award with a base period from August 1, 2027 through July 31, 2028, plus four one-year option periods extending to July 31, 2032. This is a sources sought notice for market research only; no solicitation has been issued.