Built on Experience.
Grounded in Compassion.
Our Story
The Cornerstone Oral Surgery Center was founded with a singular purpose: to reshape the standard of oral surgical care in Sioux Falls. After two decades of practice in the community, Dr. Andrew Hille created a private practice clinic where patients receive focused, unhurried attention in a facility built entirely around their comfort.
This is the destination — a brand-new, state-of-the-art oral surgery center where every detail, from the clinical environment to the pace of care, reflects what great oral surgery care should look like.
Meet Dr. Andrew Hille
Oral & Maxillofacial Surgeon
Dr. Hille has been practicing oral and maxillofacial surgery in Sioux Falls since 2004. His scope of expertise spans the full range of OMS procedures — from routine wisdom teeth extractions and dental implants to complex oral pathology and reconstructive cases. With more than 20 years of surgical experience, Dr. Hille brings a level of proficiency and clinical judgment that is unmatched in the region.
His decision to open Cornerstone reflects a commitment to a better model of care: one where the patient, not the schedule, drives the experience. At this stage of his career, Dr. Hille is focused on doing things right — not fast, not at volume, and not at the expense of the people in his chair.
Meet Jeremy
CRNA
Jeremy is the dedicated anesthesia provider at Cornerstone — a distinction that sets this practice apart from every other oral surgery center in Sioux Falls. As a CRNA, Jeremy’s sole focus during your procedure is your comfort, safety, and physiological response to sedation. He is not the surgeon. He is not multitasking. He is a specialist focused entirely on you. This separation of roles allows Dr. Hille to perform at his best while Jeremy ensures you never have to worry about a thing.
Meet Our Team
The Cornerstone team is not new to oral surgery — they are some of the most experienced surgical professionals in Sioux Falls. Combined, the clinical staff brings more than 20 years of hands-on oral surgery experience to every patient encounter. This is a team that has seen nearly every clinical situation, knows how to move with precision and calmness, and is deeply invested in the patient experience at every step.
Registered Nurses
Sara
Registered Nurse
Bio
Coming Soon!
Registered Dental Assistants
Lenny
Certified Dental Assistant
Oral Surgery
Bio
Lenny is a highly experienced CDA specializing in oral surgery. With years of chair-side surgical experience, Lenny ensures procedures run smoothly and that patients feel informed and at ease throughout. His depth of surgical knowledge is a direct asset to the quality and efficiency of every procedure at Cornerstone.
Jamie
Certified Dental Assistant
Oral Surgery
Bio
Jamie brings the same level of clinical expertise and patient-centered focus as the rest of the Cornerstone team. As a CDA specializing in oral surgery, Jamie is skilled in pre-operative preparation, intra-operative support, and helping patients understand what to expect before, during, and after their procedure.
Our Facility
Our clinic at 8030 S Cinnamon Ridge Place, Suite 100 in Sioux Falls was designed from the ground up as a modern oral surgery center — and built to fully conform to current building code standards for surgical facilities. Every room, every system, and every safety consideration was informed by decades of knowing what works in an oral surgery environment and what patients actually need to feel safe and cared for. When we built Cornerstone, we made the decision to do it right — because that’s the standard our patients deserve.
Our Values
The name Cornerstone is intentional. It reflects our belief that the best care is built on a foundation of integrity, faith, and genuine concern for every patient. We do not overbook. We do not rush. We do not bill for procedures you don’t need. We practice the way patient care was meant to be delivered.
That commitment runs deeper than policy — it’s who we are. Our team is made up of people who are later in their careers and still choose to be here, because this work matters to us. We’re not going through the motions. We genuinely care about our patients, and we genuinely care about each other. That kind of team doesn’t happen by accident, and it shapes every interaction you’ll have when you walk through our doors. You’ll feel it from the first phone call.
Meet the Team Behind the Care
Dr. Hille and the Cornerstone staff have spent decades perfecting the surgical experience. We’d love the opportunity to show you what that means for you.