10 10 17 Pmc 0087


Ace Walker, M.D.

Michelle Lizotte, M.D.

Sarah Walton, FNP

Hours of Service

Monday – Friday
8:00 a.m. to 5:00 p.m.

Saturday - Walk-in clinic
9:00 a.m. to 12:00 p.m.

Although patients are encouraged to book appointments in advance, we try and accommodate patients who want to be seen on the same day they call in.

The Clinic is Closed: New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas Day

Contact Information

Pioneer Medical Center 701 Stock Street Big Timber, MT 59011 (406) 932-4199

Save time by filling out the registration packet before your appointment: Clinic Registration Packet

Click here for: Patient Medical Records Release

Registration Checklist:

Please have your insurance card(s) available when you call or register in person.  Please note that registration could take up to ten minutes to complete.  For this reason we ask that you arrive early for your appointment(s). The information you will need available to complete registration includes:

  • Your full legal name, including maiden name or any other former names, including nicknames
  • Your birth date
  • Your street address (or the address of the parents or guardians of minor children.)
  • Your home, work, and cell phone numbers (or phone numbers for the parents or guardians of minor children.)
  • Health insurance information (name of the insurance company, name of the insured person and his/her place of work, mailing address for claims, and group and policy numbers)
  • Medicaid or Medicare card (if the patient receives federal or state assistance)
  • Name, address and telephone number for person who will be responsible for payments
  • Special requirements (interpreter, wheel-chair access, etc.)
  • Date, location and type of injury (This information is necessary only if you are seeking treatment because of an accident).