About Us

About Us

Dr. Waterbrook's Philosophy

A prominent part of Waterbrook’s practice is his emphasis on treating the whole patient — not just whatever physical challenge the patient brings. “I like the motto of the medical school at Loma Linda University, which is To Make Man Whole“. In fact, along with helping patients deal with the emotional aspects of their diagnosis and treatments, I have integrated prayer into my general surgery practice, as long as the patient is comfortable with it. I tend to let my patients lead”. As a Seventh Day Adventist Christian, I view Jesus Christ as “the Great Physician” and I try my best to emulate Christ’s model as a healer, preacher, and teacher. Especially when they face health challenges, many patients must contend with emotional and spiritual concerns. “There can be a lot of anxiety. I try to provide support by exploring the patient’s support systems, and how they and their families are handling a diagnosis and treatment that may include surgery, radiation, or chemotherapy. I can help them plug into a breast cancer support group, or assist them in navigating their emotions.

I try to help them understand what they’re facing, offer support, and if appropriate I pray with them. ”There have been studies that assert the positive impact of prayer in healing, but I am content to simply witness the comfort it can bring to patients. “To me, it’s an individual patient experience, and very personal. “I’ve never seen prayer do any harm; I’ve only seen it help. ”Sometimes, a physical cure is just not possible. But emotional and spiritual healing is”. In fact, I nearly took a spiritual path. While an undergrad at the University of Michigan, I struggled between choosing the ministry and becoming a physician. I prayed over it and fasted. In the end, I felt led to medicine. I knew that through medicine I would help heal a patient’s body, but as a physician, I could also address their emotional and spiritual concerns.

Why Grass Valley for Medical Center

Dr. Waterbrook and his wife, Katie, moved from Dayton Ohio to be closer to family. Since they both enjoy outdoors, Grass Valley was the perfect place to be close to all the activities they like doing, skiing, running, hiking, gardening. Since their move, they have been blessed with you two children who keep them very busy. So being near the Grandparents is a big perk. They really enjoy being part of the Nevada County community. That's why they choose Grass Valley for medical center

Meet Our Staff

Tammy Hughes

Tammy Hughes, CPC, CPPM Tammy brings 28 years of experience in the medical field to our office. She is a Certified Professional Coder
and a Certified Professional Practice Manager. She enjoys the challenges the medical profession brings. She is married to her husband of 35 years, they have two grown children and three grandchildren. In her spare time she enjoys biking, kayaking, crafting and spending time in her gardens.


Sarah’s love for medicine began while working in a physical therapy office while in High School. From there she received her Diploma in Health Science as well as her Certification in Massage Therapy. Creating an easy and pleasant healing journey for patients is her goal and she has a passion particularly in the area of surgical recovery. Outside of the office she enjoys spending time with her family and squeezing in as many outdoors adventures as possible.

Professional Affiliations

Fellow of the American College of Surgeons
California Medical Association
Placer-Nevada County Medical Society
Loma Linda University Alumni -Lifetime member
Association of International Medical Services


Sierra Nevada Memorial Hospital
155 Glasson Way
Grass Valley CA 95945
(530) 274-6000

Grass Valley Surgery Center
408 Sierra College
Grass Valley CA 95945
(530) 271-2282

Wound Healing and Hyperbaric Medicine Center
300 Sierra College Drive, Suite 270
Grass Valley Ca 95945
(530) 272-8619

Our Office