Meet Our Providers

Dakota Dreher, M.D.
Hospitalist
Dr. Dreher completed his internal medicine residency at St. Louis University Hospital in St. Louis, MO. He received his medical degree from the University of Kansas School of Medicine in Wichita. Dr. Dreher is board certified through the American Board of Internal Medicine.

Chris Glendenning, D.O.
Hospitalist
Dr. Glendenning is a graduate of Oklahoma State University College of Osteopathic Medicine in Tulsa. He completed his residency at Garfield County Family Practice Residency Program OU/Enid Family Medical Clinic in Enid, OK and his fellowship at the Department of Family Medicine at UNC at Chapel Hill, Chapel Hill, NC. Dr. Glendenning is certified in Family Medicine through the American Osteopathic Board of Family Physicians.

Geraint Harris, M.D.
Hospitalist
Dr. Harris completed his Family Medicine Residency at Integris Great Plains Family Medicine in Oklahoma City, OK. He received his medical degree from the University of Oklahoma College of Medicine and Doctorate of Pharmacy from the University of Oklahoma College of Pharmacy in Oklahoma City.

Hong Nguyen, MD
Hospitalist
Dr. Nguyen is a graduate of University of Kansas Medical School, Kansas City, Kansas and completed his residency at University of Missouri-Kansas City, Missouri. Dr. Nguyen is certified in Family Medicine through the American Board of Family Medicine.

Dr. Drew Rose, D.O.
Hospitalist
Dr. Rose is a graduate of Rocky Vista University of Osteopathic Medicine and completed his residency at Swedish Covenant Hospital in Chicago, Illinois. Dr. Rose is certified in Internal Medicine through the American Osteopathic Board of Internal Medicine.

Katrina Siemiesz, M.D.
Hospitalist
Dr. Siemiesz completed her residency at Wayne State University Family Medicine Residency in Rochester, Ml. She received her medical degree from American University of the Caribbean School of Medicine in Sint Maarten, Netherland Antilles. Dr. Siemiesz is board certified through the American Board of Family Medicine.

Brenda Sullivan, APRN
Master of Science in Nursing – Family Nurse Practitioner
Fort Hays State University
Bachelor of Science in Nursing from Coe College in Cedar Rapids, Iowa

Harry Tsamolias, MD
Hospitalist
Dr. Tsamolias completed his residency at the University of Florida in Clearwater, FL. He received his medical degree from the University of Kansas School of Medicine, Kansas City, KS. Dr. Tsamolias is certified in Family Medicine through the American Board of Family Medicine.