Yellowstone Up Close & Personal
Yellowstone Up Close & Personal

Clinics / Medical Facilities
Yellowstone National Park


The Mammoth Clinic located at Mammoth Hot Springs, is the only medical facility that is Open Year Round. There are other clinics that are open during the tourist season at Lake and Old Faithful.


Yellowstone National Park Medical Clinics
Clinic Open Close Hours Days Phone
Mammoth 02 Jan - 24 May * Sat/Sun 8:30 am - 5:00 pm / 8:30 am - 1:00 pm Mon - Thu / Fri 307-344-7965
  25 May - 29 Sep - 8:30 am - 5:00 pm All Week
  30 Sep - 31 Dec Sat/Sun 8:30 am - 5:00 pm / 8:30 am - 1:00 pm Mon - Thu / Fri
  Year Round - No After Hour Calls  
Lake 13 May - 13 Oct * - 8:00 am - 8:00 pm All Week 307-242-7241
Old Faithful 22 Apr - 27 Oct * Sat/Sun 8:30 am - 5:00 pm Mon - Fri 307-545-7325

Updated: May 10, 2026

* On Call After Hours through 911

The Mammoth Clinic is “CLOSED” on the following Holidays:
New Years Day / Martin Luther King Day / Presidents' Day / Memorial Day / Veterans Day / Thanksgiving / Christmas

For all in park Emergencies: Dial 911

Yellowstone National Park Clinic Map
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Entrance Cities and Gateway Towns
Gardiner, Montana Silver Gate, Montana West Yellowstone, Montana Cooke City, Montana
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