More Surgeons at More Locations

December 19, 2012


WASHINGTON, Mo. – Mercy Clinic Surgical Specialists has grown to six physicians in three towns to serve patients better. Mercy Clinic Surgical Specialists has two offices in Washington and office hours in O’Fallon, Mo., and Sullivan. The surgeons are James Cassat, MD, FACS; K. Anthony Gildehaus, MD; Lisa R. Martin Hawver, MD, FACS; James Jansen, MD, FACS; Jonathan N. Limpert, MD, FACS, and Thomas B. Riechers, MD, FACS.

“Mercy has made a commitment to the communities we serve to bring doctors and services to where patients live and work, so they don’t have to spend their day driving to get the medical attention they need,” said Dr. Riechers. “We started by opening practices in more towns for primary care physicians, and now we’re bringing specialists to those locations.”  

Mercy Clinic Surgical Specialists provides complete surgical care. The surgeons specialize in general surgery, breast surgery and biopsies, hemorrhoid surgery, thyroid surgery, cancer excision and resections, advanced laparoscopic surgery, gallbladder removal, single incision laparoscopic surgery (SILS),  hernia repair, colorectal surgery, liver and pancreas surgery, bariatric (weight loss) surgery, vascular surgery, carotid artery surgery, leg bypass surgery, vein surgery, wound care and hyperbaric treatment. Inpatient and outpatient surgeries can be scheduled at Mercy Hospital Washington and Mercy Outpatient Surgery Center Washington.

Drs. Cassat, Gildehaus and Jansen practice at Mercy Medical Building South, 901 Patients First Dr. in Washington. Drs. Hawver, Limpert and Riechers see patients in Suite 108 in the Mercy Medical Building North, 851 E. Fifth St. in Washington. Dr. Riechers and Dr. Limpert hold additional office hours at Mercy Clinic at 102 Grande Center in Sullivan. Dr. Hawver has office hours in Suite 206 at Mercy Clinic 300 Winding Woods Dr. O’Fallon, Mo., on the second and fourth Thursdays of each month.

Same day consultations and physician referrals are often available. For more information about Drs. Cassat, Gildehaus and Jansen, call 636-239-7727. For more information about Drs. Hawver, Limpert and Riechers, call 636-861-7870.

As part of Mercy Clinic, all of these doctors belong to a health care team that’s thousands strong, linking patients to experts everywhere Mercy is. It’s coordinated, responsive care that’s all about the patient. With MyMercy, Mercy’s free online health management tool, patients can take their health care with them and stay in touch with their Mercy Clinic care teams, request appointments, see lab results and more, anytime or anywhere. For a complete and searchable list of Mercy physicians, visit or call our referral hotline toll free at 866-416-4664.


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