MPMC Specialty Clinic970.887.58001000 Granby Park Drive SouthGranby, CO 80446

Yampa Valley Medical Associates970.887.5864940 Central Park Dr. Suite 100Steamboat Spring


Internal medicine physician Mark McCaulley, MD, FACP,  is uniquely trained and experienced in the management of  diseases of the gastrointestinal tract and liver. He treats conditions and diseases of the esophagus, stomach, small intestine, colon and rectum, pancreas, gallbladder, bile ducts and liver; specifically, colon polyps and cancer, hepatitis, heartburn, peptic ulcer disease, colitis, gallbladder and biliary tract disease, nutritional problems, irritable bowel syndrome and pancreatitis. Dr. McCaulley has had several publications in the scientific medical literature on gastroenterology and other medical topics. He has been in private practice in Steamboat Springs since 1982.

Dates and locations of clinics for each specialty physician are published twice monthly in local newspapers and are available here on our Specialty Clinic Calendar.

Instructions for Patients Scheduled for GI Procedures

  1. Bring your driver’s license and insurance card.
  2. You should not ingest alcoholic beverages or take un-prescribed medications prior to your procedure. Dr. McCaulley requests that you remain on your usual medication. If it becomes necessary to adjust your medications, you will receive those instructions from a preoperative nurse. No diabetic medications, ACE inhibitors (ie: Lisinopril), or diuretics (ie: HCTZ, Lasix) the morning of procedure.
  3. Do not wear jewelry, cosmetics (such as lipstick, eye shadow, mascara, or nail polish) the day of the procedure. Leave all valuables at home.
  4. You will receive intravenous (IV) fluids before and during your procedure. After your procedure, you will be kept in the recovery room for approximately 30-45 minutes. Your family will be asked to wait in another area of the hospital until you are stable.
  5. You will receive a sheet of discharge instructions prior to going home.
  6. Wear comfortable clothing.
  7. No smoking, chewing tobacco, chewing gum or hard candy after midnight before the procedure.
  8. Important decision making should be delayed 48 hours.
  9. Please take all cardiac, pulmonary, hypertension or anti-seizure medications with a small sip of water the day of procedure at least 3 hours prior to your procedure.
  10. All surgical outpatients will be discharged from the hospital only in the care of a responsible adult.  If the patient does not have a responsible adult to assume discharge responsibility, we will not schedule the procedure.  If the patient presents to the hospital without a responsible adult to assume care, the procedure will be cancelled.
  11. Patients may not ride home after procedures in a taxi or medi-van without a responsible adult to assume their care during the transport and after arrival at home.
  12. In the event that the physician would need to speak with the adult responsible for the patient undergoing a surgical procedure, we ask for that person to stay in the lobby waiting area during the procedure.  For all surgical procedures on minors, a parent or legal guardian is required to stay in the lobby area of the hospital at all times during the child’s procedure.

If you have any questions, please contact the Surgical Services desk at Middle Park Medical Center Granby 970-887-5827 or 970-887-5826

Colonoscopy Preparation Instructions

Purchase at Grocery store or pharmacy:

  • 1-gallon of water
  • 1-bottle of Miralax or Polyethylene Glycol (238 Grams – 14 doses – 8.3 oz)
  • 1-bottle Magnesium Citrate (10 oz of any flavor)
  • Emergen C (5 packets of any flavor)
  • 1-box Gas Ex tabs (any flavor is fine)


If your weight is:

150 Ibs or over – discard 6 cups of water from the gallon jug, then add the following mixture to the remaining water….

  • Add bottle of Miralax
  • Add bottle of Magnesium Citrate
  • Add Emergen C (5 packets)

Mix all ingredients together in the gallon water jug, save and set aside 2 cups of the prep for the morning of your procedure.

Day before your procedure:

  1. Breakfast and Lunch needs to be low in Fiber: No fruits, vegetables, nuts, berries, seeds or oatmeal. Avoid potato skins, tomatoes or Chinese food. Absolutely no corn, jalapenos, mushrooms or olives 5 days prior to colonoscopy!  Refer to attached menu.
  2. Beginning at 1 pm the day before your procedure drink one 8 oz. glass of the prep every 15-30 mins until finished. You may have only clear liquids until 3 hours prior to your arrival time.
  3. Take 2 Gas-Ex tablets any time in the evening.

The morning of your procedure:

  • 3 hours prior to your arrival time, drink the remaining 2 cups of the prep over a 30 minute time period along with 2 more Gas-Ex tablets
  • Do Not Eat or Drink anything after taking the remaining prep.
  • Please take all your morning meds except any Diabetic medication and Lisinopril with a sip of water the morning of the procedure.
  • Leave all jewelry and valuables at home the day of your procedure
  • Absolutely no chewing gum, chewing tobacco or smoking the morning of your procedure

** You will need a responsible adult to drive you home after the procedure.
** Please call the Pre-Operative Nurse at 970-887-5827 or Outpatient Scheduling at 970-887-5886

Sample Menu for Day Prior to Colonoscopy


White Toast with Butter
Apple Juice
Coffee – Black or Cream, Non-Fat Milk, Tea, Soy Milk
Yogurt, Plain or Vanilla


Plain Cooked Chicken or Turkey
Broiled Fish
Tuna Fish
White Bread – Mayonnaise or butter
Pasta with Butter or Olive Oil

After Lunch (1:00 p.m.):

Clear Liquids
Bouillon Cubes
Black Coffee
Plain Tea
Jello (any kind)

Remember: The day before and the day of the procedure, do not eat any fruits, vegetables, nuts, berries, oatmeal, or seeds. Especially no potato skins or tomatoes.

Absolutely do not eat any corn, jalapenos, mushrooms or olives for 5 days prior to colonoscopy.

You may have clear liquids up to 3 hours before your arrival time.