big horn mountain medicine internal medicine sheridan memorial hospital sheridan wyoming Sheridan Memorial Hospital Sheridan Wyoming
Welcome to Big Horn Mountain Medicine
Patient Info
Physician Recruitment
Staff Information
Big Horn
Mountain Medicine

1435 Burton St.
Sheridan, WY 82801

1428 5th Street
Sheridan, WY 82801

(307) 675-2650

Office Hours:
Monday - Thursday
8 a.m. - 5 p.m.
8 a.m. - 4 p.m.

After Hours:
Call 675-2650 or go to
Urgent Care located next to
the emergency room at
Sheridan Memorial Hospital

Sheridan Memorial Hospital Sheridan Wyoming

Big Horn Mountain Medicine is dedicated to providing Advanced Care with a Hometown Style. We opened in September of 2009, and have continued to grow and offer excellent Internal Medicine care to our patients. We are pleased to offer highly trained, friendly staff to assist you with all of your medical needs.

We are happy to announce the expansion of locations and providers to meet the needs of our community.  Call today to make your appointment:  307-675-2650.

Locations & Providers in Sheridan

1428 5th Street                                              1435 Burton Street

Juli Ackerman, MD                                                  Jason Ackerman, MD

Hannah Hall, MD                                                       David Walker, DO

Ian Hunter, MD                                                          Kim Gilbert, NP-C, FNP

Autumn Barrett, PA-C                                             Melanie Martin, NP-C, FNP

Jason Otto, PA-C                                                        Stephanie Sander, PA-C


As an Internal Medicine practice, we treat patients 16 years of age and older for any of their medical conditions. Internists are trained to diagnose and treat severe, chronic illnesses. They also help patients understand preventive medicines, men's and women's health issues, as well as common problems of the eyes, ears, skin, nervous system and reproductive organs. Most older adults in the United States see internists as their primary medical practitioners.

Hours of Operation:
Monday – Thursday 8:00 a.m. to 5:00 p.m.
Friday 8:00 a.m. to 4:00 p.m.
(Closed Daily Noon to 1:00 p.m. for lunch)


Ranchester Clinic

Tuesdays from 8:30 am - 4:30 pm

Location:  719 Dayton Street, Suite 2 in Ranchester

   (on the back side of EATSTREET Restaurant)

Call (307) 675-2650 for an appointment -- Walk-ins are welcome

Stephanie Sander, PA-C and Kim Gilbert, NP-C, FNP

will alternate in conducting internal medicine outreach clinics for adults (age 16 years and older) in Ranchester on Tuesdays beginning August 19, 2014.

click here for flyer


Big Horn Surgical Sheridan Wyoming