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Patient Consultations


Worthwhile treatment plans and second opinions for doctors and patients as regards to proven cures and worthwhile therapy for various medical conditions.

Patient Consultations

Book Now with William B. Ferril, M.D.


If you are interested in becoming a new patient of Dr. Ferril, please consider the following before making an appointment.

Dr. Ferril would be pleased to have you as a new patient. However, you may find it more convenient and more affordable to obtain Dr. Ferril’s treatment plan for your condition and make a copy of his treatment plan to give to your local provider for health care.

Dr. Ferril does not accept insurance or file any insurance forms.

Dr. Ferril does not handle emergencies. Dr. Ferril works with patients on a second opinion or consultation basis, by appointment only, and does not function as the patient’s primary care physician.

You should carefully read over and study the treatment plan for your condition before making an appointment with Dr. Ferril. This makes the initial consultation dramatically more productive for you.

You will likely be asked by Dr. Ferril to take a blood test for food allergy antibodies and/or a 24-hour urine test for hormone metabolites, billed at Dr. Ferril’s actual wholesale cost of about $350 and $400, respectively, and paid directly to the particular laboratory that processes the test. The 24-hour urine test is generally covered by Medicare.

The first consultation should be 30 minutes with monthly followup consultations of 15 minutes each until you are satisfied that you are getting well. Thereafter, there should be an annual consultation of 15 minutes so Dr. Ferril can remind you why you are getting well and to encourage you on your road to health.

You should be willing, if recommended by Dr. Ferril, to make significant dietary changes and to take an active role in improving your health. You should do your homework assignments.

Appointments are paid in advance and require a 24-hour cancellation notice.

Prior to making an appointment, please complete a Patient Intake Form. Once this is completed, you may make an online appointment at your convenience.

You can watch a video tutorial on how to book, cancel, or change an appointment.

Please do not make a new patient appointment until after you have completed the Patient Intake Form.This will allow Dr. Ferril to carefully review your medical information prior to your appointment.

If you are a current patient, or, if you are a new patient who (1) is referred by a current patient, and (2) has completed the Patient Intake Form, please call us at 406-862-3308. This will allow us to schedule appointment times allocated only for current patients, and, for patients referred by current patients.

If you are a new patient, who is not referred by a current patient, please complete the Patient Intake Form and make your appointment online by clicking on the link above for “Book Now with William B. Ferril, M.D.”

Food Allergy and/or 24-Hour Urine Test Kits

If Dr. Ferril has requested that you take a Food Allergy Test for antibodies and/or a 24-Hour Urine Test for hormone metabolites, please make the payment below for the shipping of the test kit(s). Payment for the actual testing will be billed to you directly from the laboratories at Dr. Ferril’s wholesale price.