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
  28 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 - 29 Sep * - 8:00 am - 8:00 pm All Week 307-242-7241
  02 Oct - 13 Oct Mon/Tue 10:00 am - 6:30 pm Wed - Sun  
Old Faithful 22 Apr - 03 May * Sat/Sun 8:30 am - 5:00 pm Mon - Fri 307-545-7325
  04 May - 12 May CLOSED CLOSED CLOSED CLOSED
  13 May - 29 Sep   7:00 am - 7:00 pm All Week  
  30 Sep - 13 Oct   8:30 am - 5:00 pm All Week  
  16 Oct - 27 Oct Mon/Tue 8:30 am - 5:00 pm Wed - Sun  

Updated: March 31, 2024


* 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 Hours 2024

Yellowstone National Park Clinic Map

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