Medical Clinics

Rangers provide emergency medical services within Yellowstone National Park. Call 911 in case of an emergency.

Three medical facilities are available within Yellowstone National Park. As we strive to provide the most up to date information, please note that the actual hours and seasons may change at these medical clinics. Please call 911 in case of an emergency. 

Mammoth Clinic
Open Year Round
8:30 am to 5:00 pm
Monday - Friday
(Closed Thanksgiving and Christmas)
Phone: 307-344-7965

Old Faithful Clinic
Open Summer Months Only
7:00 am to 7:00 pm
Phone: 307-545-7325

Lake Medical Clinic
Open Summer Months Only
8:30 am to 5:00 pm
Phone: 307-242-7241

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