MAMMOTH CLINIC
(307) 344-7965
Holiday Closures:
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Veterans Day
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Thanksgiving
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Christmas
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New Years Day
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Martin Luther King Day
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Presidents Day
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Memorial Day
Monday - Thursday
8:30am - 5pm
Friday
8:30am - 1pm
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Sunday - Saturday
8:30am - 5pm​
September 29, 2025 - May 22, 2026
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May 26, 2026 - September 27, 2026
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OPEN YEAR-ROUND
OLD FAITHFUL CLINIC
(307) 545-7325
no appointment necessary
Monday - Friday
8:30am - 5:00pm​
Monday - Sunday
7:00am - 7:00pm
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Monday - Sunday
8:30am - 5:00pm
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Thursday - Monday
8:30am - 5:00pm
April 20-24 and
April 27 - May 1
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May 13 - September 26
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September 27 - October 12
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October 15 - October 26
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Closures:
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May 4th - 12th
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October 13, 14, 20, 21
OPEN SEASONALLY
OPEN SEASONALLY
LAKE CLINIC
(307) 242-7241
no appointment necessary
Closures:
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September 29-30
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October 6-7
May 13 - September 26
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September 27
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September 28 - October 12
Sunday - Saturday
8:00am - 8:00pm
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8:30am - 5:00pm
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Thursday - Monday
10:00- 6:30pm
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