Dr. Brian Gillenwater, Family Medicine in Liberty, MO. See Reviews & Make an Appointment! LIST YOUR PRACTICE ... Based on patient feedback. Read the reviews. RATINGS AND REVIEWS. Dr. Gillenwater's Rating ... Write a review . Office Rating. Showing ratings for: 2609 Glenn Hendren Dr, Liberty, MO, 64068 . Liberty Clinic. 2609 Glenn Hendren Dr ....