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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 03 Jan/30 May Sat/Sun 8:30 am - 5:00 pm / 8:30 am - 1:00 pm Mon - Thu / Fri 307-344-7965
  01 Jun/28 Sep - 8:30 am - 5:00 pm All Week
  29 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 12 May/14 Sep - 8:30 am - 8:30 pm All Week 307-242-7241
  15 Sep/23 Sep   10:00 am - 6:30 pm All Week  
Old Faithful 12 May/14 Sep - 7:00 am - 7:00 pm All Week 307-545-7325
  15 Sep - 01 Oct   8:30 am - 5:00 pm All Week  

Updated: July 14th, 2017


The Mammoth Clinic is “Closed” on the following Holidays:
January 1st & 2nd, November 22nd, 23rd & 24th, December 25th & 26th


For all in park Emergencies: Dial 911



Yellowstone National Park 2017 Clinic Opening, Closing and Hours
Yellowstone National Park Clinic Map


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