Location(s): Holton, Onaga, St. Marys
At Community HealthCare System, attentive staff cares 24/7 for patients of all ages who have medical conditions or have had surgery. The services we provide are focused on safe, effective, patient- centered, high-quality care. Our concern for you and your family extends throughout our organization.
Registered and licensed practical nurses strive to ensure that our patients receive excellent clinical care. Respiratory therapists work with patients who have lung conditions or need supplemental oxygen. Physical, occupational and speech therapists evaluate patients' abilities and work with them to regain strength and independence with a focus on safety. Environmental services staff ensure cleanliness throughout the unit to promote a healing environment. Dietary staff ensure that patients' nutritional needs are met and that food simply tastes good.
Every facet of our care is centered on your needs.
General Surgery
At Community HealthCare System, our general surgery team takes a comprehensive, personalized approach to care.
In this age of technology and rapidly advancing medical science, no procedure is a one-surgeon show. At CHCS, our surgeons approach surgery as a collaboration, working closely with your primary care provider, experts in comfort and pain control (nurse anesthetists), laboratory physicians (pathologists), imaging experts (radiologists), and your family. Every staff member and every process exists to respond to your needs. We believe this team approach leads to the best outcomes.
Our Services Include:
Bariatric sleeve
Ear, nose and throat
Endoscopy services
General
Laparoscopic procedures
Podiatry
Urology
Anesthesia pain management services are also available
CHCS delivers an uncompromising dedication to the quality surgical services you need, close to home.
To make an appointment with a surgical specialist, please view the calendar of upcoming clinics or contact us.
Contact Us
Community HealthCare System
Surgery Department
Monday-Thursday, 7:30 a.m. to 5:00 p.m.; Friday 6:30 a.m. to 4:00 p.m.
Closed on holidays and weekends except for emergencies
785-889-5108

Alfredo Iloreta, MD
Medical Staff
Location: Onaga
Position: Specialty Clinic Provider
Medical Service: Medical & Surgical Care
Alfredo Iloreta, MD
Dr. Iloreta graduated from the University of St. Thomas College of Medicine and Surgery.
David Allen, MD
Medical Staff
Location: Holton
Position: Physician
Medical Services: Childbirth, Emergency Department, Medical & Surgical Care, Family Practice, Diabetic Care, Senior Care, Youth Services, Men's Health, Women's Health
David Allen, MD
Dr. David Allen holds degrees from Kansas State University and the University of Kansas School of Medicine. He completed his residency at Via Christi Regional Medical Center in Wichita. His specialties are family medicine and obstetrics, including C-sections, GI procedures (upper and lower endoscopy), and pediatric services.
John Devine, MD
Medical Staff
Location: Onaga
Position: Specialty Clinic Provider
Medical Services: Medical & Surgical Care, Specialty Clinics
John Devine, MD
Dr. Devine received his medical degree from the University of Kansas School of Medicine. He completed an internship at St. Lukes Hospital, Kansas City, Missouri, and his residency at University of Kansas School of Medicine, Kansas City, Kansas. Dr. Devine is a fellow of the American Board of Urology.
Rebecca Kramer, CRNA
Medical Staff
Locations: Onaga, Holton, St. Marys
Position: Anesthesia
Medical Service: Medical & Surgical Care
Rebecca Kramer, CRNA
Rebecca Kramer is a member of the American Association of Nurse Anesthetists and the Kansas Association of Nurse Anesthetists. She holds an undergraduate degree from Wichita State University and a master's degree from Texas Wesleyan University in Fort Worth, Texas.
Sam Jeffers, CRNA
Medical Staff
Locations: Onaga, Holton, St. Marys
Position: Anesthesia
Medical Service: Medical & Surgical Care

Scott McCormick, CRNA
Medical Staff
Locations: Onaga, Holton, St. Marys
Position: Anesthesia
Medical Service: Medical & Surgical Care
Scott McCormick, CRNA
Scott McCormick is a member of the American Association of Nurse Anesthetists and the Kansas Association of Nurse Anesthetists. He is a registered nurse anesthetist. He graduated from Kansas Newman College in Wichita.
Timothy Gateley, DPM
Medical Staff
Location: Onaga
Position: Specialty Clinic Provider
Medical Services: Podiatry, Medical & Surgical Care, Specialty Clinics
Timothy Gateley, DPM
Timothy B. Gateley, D.P.M., has been practicing podiatry with Kansas Foot Care since 2008. Dr. Gateley moved to Topeka and Kansas Foot Care from Kansas City, where he had been practicing since 2005. Dr. Gateley attended the University of Oklahoma, where he received his Bachelor of Science degree in zoology in 1999. He then attended the Dr. William M. Scholl College of Podiatric Medicine in Chicago, Illinois, where he received his Doctor of Podiatric Medicine in 2003. Dr. Gateley completed a two-year surgical residency at the Leavenworth VA Medical Center, where he was the chief resident.
Tyler Grindal, MD
Medical Staff
Locations: Onaga, St. Marys
Position: Specialty Clinic Provider
Medical Services: Ear, Nose & Throat, Medical & Surgical Care, Specialty Clinics
Tyler Grindal, MD
Dr. Grindal's clinical interests are adult and pediatric earn, nose and throat and head and neck surgery. He holds a bachelor's degree in biology from Kansas State University and attended medical school at the University of Kansas. He completed his residency at the University of Florida department of otolaryngology.
C. Bruce Carroll, MD
Medical Staff
Location: St. Marys
Position: Physician
Medical Services: Family Practice, Medical & Surgical Care, Diabetic Care, Senior Care, Youth Services, Men's Health, Women's Health
C. Bruce Carroll, MD
Married to his lovely wife Cindy since 1983, Dr. Bruce Carroll graduated from Southwestern Medical School in Dallas in 1987. He has been in practice in St Marys since 1990. He and his wife have four children and seven grandchildren (and counting!). Dr. Carrol enjoys the full spectrum of family medicine in a small town and has enjoyed knowing and taking care of multiple generations of many, many families over the past 30 years. He delivered just under 1,000 babies before retiring from that duty in 2012. When not in the clinic, he can often be found at CrossFit Benedictus, where he is a Level 2 coach; he also enjoys cycling as part of his fitness program. Not surprisingly, sports medicine and lifestyle medicine are parts of family medicine that have special appeal to Dr Carroll. He puts fitness into practical application with his first real passion: hiking and climbing, especially in Colorado.
David Cancelada, MD
Medical Staff
Locations: Onaga, Holton, St. Marys
Position: Surgery
Medical Services: Medical & Surgical Care, Specialty Clinics
David Cancelada, MD
Dr. David Cancelada attended the nation’s military medical school at the Uniformed Services University of the Health Sciences (USUHS) in Bethesda, Maryland. He completed his surgical training at Brooke Army Medical Center in San Antonio, Texas. He is board-certified in both general surgery and surgical critical care. He has 25 years of experience in the U.S. Army, which included assignments in numerous military medical facilities to include the U.S. Army Burn Unit, multiple deployments to Iraq as commander of a forward surgical team, as well as Honduras and Haiti in support of the 2010 earthquake disaster. Military decorations include the Bronze Star and the Legion of Merit. He and his family moved to Kansas in 2006 when he was transferred to Fort Riley, and since leaving the military in 2010, Dr. Cancelada has continued to serve the people of Kansas as a general surgeon. Dr. Cancelada’s professional memberships include Fellowship in the American College of Surgeons (FACS), the Eastern Association for the Surgery of Trauma (EAST), and the American Society of Metabolic and Bariatric Surgery (ASMBS). His interests include trauma/critical care, bariatric and anti-reflux surgery, cancer (breast, colon), and thyroid surgery. Hospital memberships include Community HealthCare System and Stormont-Vail Medical Center (SVMC), where Dr. Cancelada is an active member of their Level 2 trauma service as well as Course Director for their Advance Trauma Life Support (ATLS) training program. Dr. Cancelada is also an assistant professor of surgery at USUHS.
Marcus Weiser, DO
Medical Staff
Location: Onaga
Position: Physician
Medical Services: Childbirth, Emergency Department, Family Practice, Medical & Surgical Care, Diabetic Care, Senior Care, Youth Services, Men's Health, Women's Health
Marcus Weiser, DO
Dr. Marcus Weiser graduated from Bethany College with a bachelor’s degree in biology and from medical school at Kansas City University of Medicine and Biosciences. He completed his residency at Via Christi (St. Joseph and St. Francis) in Wichita and served as chief resident. Dr. Weiser is board-certified in family medicine. He is also trained to do obstetrics and performs EGDs (esophagogastroduodenoscopy), colonoscopies, and C-sections. He particularly enjoys teaching both third- and fourth-year medical students as a clinical assistant professor in the University of Kansas Medical Center Department of Family Medicine and as a clerkship preceptor for the Kansas City University of Medicine and Biosciences. Dr. Weiser enjoys caring for others in a variety of settings. “I love family medicine, and it is a privilege to serve others as a family medicine physician. I find the variety that rural family medicine offers both challenging and rewarding,” he says. Dr. Weiser was born and raised in northwest Kansas and lives in Onaga with his wife and five children. Outside of work, he enjoys spending time with his family, helping coach his kids’ sports teams, and, occasionally, golfing. He also likes basketball, hunting, fishing, shooting, and grilling or smoking meats.