Meet our board-certified urologists
Our board-certified urologists are focused on expert care for your most pressing medical needs. For the most advanced, specialized urologic care, schedule your appointment today.
Joshua K. Modder, MD
A strong patient/physician relationship is what Dr. Modder values most as a doctor. You can expect a thorough evaluation of your problem and understanding of its significance. Dr. Modder listens to your concerns and works together to find treatment options that will fit your needs. In addition to being a general urologist, Dr. Modder’s clinical areas of expertise include erectile dysfunction, male sexual health and male infertility.
Board-Certified: American Board of Urology
Fellowship-Trained: Andrology & Male Infertility, Northwestern University, Chicago, IL
Residency: Urology, UCSD Medical Center, San Diego, CA
MD: University of Wisconsin School of Medicine, Madison, WI
BSc: Zoology, University of Wisconsin, Madison, WI
Member: American Urological Association, American Association of Clinical Urologists, Wisconsin Urological Society, Wisconsin State Medical Society, LUGPA
Matthew S. Anderson, MD
Dr. Anderson’s clinical areas of expertise include prostate disorders, evaluation and treatment of urinary disorders, and kidney stones. Dr. Anderson performed the Fox Valley’s first hand-assisted laparoscopic nephroureterectomy (removal of kidney, urine tube, and bladder cuff) at Theda Clark Medical Center in 2001.
Board-Certified: American Board of Urology, National Board of Medical Examiners
Residency: Urology, Loyola University Medical Center, Maywood, IL
MD: University of Colorado School of Medicine, Denver, CO
BSc: Zoology/Physiology, University of Wyoming, Laramie, WY
Member: American Urological Association, American Association of Clinical Urologists, Wisconsin Urological Society, Wisconsin State Medical Society, LUGPA
Omar Atassi, MD
Dr. Atassi has been practicing urology in the Fox Valley for 24+ years. He is a partner at Wisconsin Institute of Urology and Wisconsin Institute of Surgical Excellence, an ambulatory surgery center.
Dr. Atassi’s clinical areas of expertise include evaluation and treatment of urinary cancers, diseases of the prostate, and kidney stones.
Dr. Atassi specializes in the treatment of advanced and metastatic prostate cancer. He also has a special interest in pediatric urology and female incontinence.
Board-Certified: American Board of Urology
Residency: Urology, William Beaumont Hospital, Royal Oak, MI
MD: Loyola University Medical School, Maywood, IL
BSc: Biology, Duke University, Durham, NC
Member: American Urological Association, American Association of Clinical Urologists, Wisconsin Urological Society, Wisconsin State Medical Society, LUGPA
Community Involvement:
Current Member: Community Foundation Board of Directors
Past President: Theda Clark Foundation Board
Former Member: Thedacare Board of Trustees
Former Member: FNB Fox Valley Board of Directors
Former Member: FUYSC Board of Directors
Daniel J. Higgins, MD
Dr. Higgins’ clinical areas of expertise include urologic cancer, kidney stone disease, and enlarged prostate. He employs a variety of state-of-the-art surgical modalities such as cryosurgical treatment of the prostate and kidneys, laser treatment for enlarged prostate, InterStim therapy for overactive bladder, and outpatient procedures for urinary leakage. Dr. Higgins has also had training in advanced robotic surgery (da Vinci Surgical System) used for treatment of prostate cancer (prostatectomy) and treatment for symptomatic ureteropelvic junction obstruction (pyeloplasty).
Board-Certified: American Board of Urology
Residency: Urology, Medical College of Wisconsin, Milwaukee, WI
MD: Medical College of Wisconsin, Milwaukee, WI
BSc: Business Administration, Marquette University, Milwaukee, WI
Member: American Urological Association, Wisconsin State Medical Society, LUGPA
Scott C. Kolbeck, MD, FACS
Dr. Kolbeck’s clinical areas of expertise include prostate disorders, kidney stones, and evaluation and treatment of urinary incontinence. Dr. Kolbeck has a special interest in performing laser surgery, minimally invasive procedures for male and female incontinence, and radioactive seed implants for prostate cancer, all of which are outpatient procedures.
Board-Certified: American Board of Urology, National Board of Medical Examiners
Fellow: American College of Surgeons
Residency: Urology, University of Virginia, Charlottesville, VA
MD: University of Wisconsin, Madison, WI
BSc: Biology, University of Wisconsin, Madison, WI
Member: American Medical Association, American Urological Association, American College of Surgeons, Wisconsin Urological Society, Wisconsin State Medical Society, LUGPA
Eric J. Lawatsch, MD
Dr. Lawatsch is a partner in Wisconsin Institute of Urology. He has practiced in the Fox Valley area since 2007. His hospital affiliations include ThedaCare, Aurora, Ascension and the VA in Green Bay. He is also part of the surgical team at Wisconsin Institute of Surgical Excellence, an ambulatory surgery center.
As a general urologist, Dr. Lawatsch is trained to evaluate and treat all aspects of urologic disease, including prostate cancer, benign prostatic hyperplasia (BPH), kidney cancer, kidney stones, bladder cancer, erectile dysfunction, female incontinence, and pediatric urologic diseases.
Dr.Lawatschspecializes in the treatment of prostate cancer, from robotic surgery to the evolving treatment options for advanced and metastatic prostate cancer.
Board-Certified: American Board of Urology, National Board of Medical Examiners
Residency: Urology, Medical College of Wisconsin, Milwaukee, WI
MD: University of Minnesota, Minneapolis, MN
BSc: Biology, University of Minnesota, Minneapolis, MN
Member: American Urological Association, Wisconsin Urological Society, Society of Government Service Urologists, Wisconsin State Medical Society, LUGPA
Michael J. Murphy, MD
Dr. Murphy’s clinical areas of expertise include diseases of the kidney and prostate. His interests also include laparoscopic cryo-ablation of kidney tumors, erectile dysfunction, and endoscopic management of kidney stones.
Board-Certified: American Board of Urology
Residency: Urology, Medical College of Wisconsin, Milwaukee, WI
MD: Michigan State University College of Medicine, East Lansing, MI
BSc: Chemistry, University of Wisconsin, Green Bay, WI
Member: American Urological Association, Wisconsin Urological Society, Wisconsin State Medical Society, LUGPA
Robert E. Vlach, Jr., MD, FACS
Dr. Vlach’s areas of clinical expertise include urologic oncology (cancer of the kidney, bladder, prostate, and testicle), diseases of the prostate (including laser surgery), incontinence, and kidney stones. He has a special interest in laparoscopic surgery, including the use of da Vinci Surgical System for robotic-assisted laparoscopic urologic procedures. With a drive for excellence and passion for perfection, Dr. Vlach is pleased to be working in an area of medicine in which there are proven procedures that can treat and cure patients.
Board-Certified: American Board of Urology, National Board of Medical Examiners
Fellow: American College of Surgeons
Residency: Urology, University of Wisconsin Hospital and Clinics, Madison, WI
MD: University of Wisconsin School of Medicine, Madison, WI
BSc: Biochemistry, University of Wisconsin, Madison, WI
Member: American Association of Clinical Urologists, American College of Surgeons, American Urological Society, Wisconsin Urological Society, Wisconsin State Medical Society, LUGPA
Tait D. Fors, MD
Dr. Tait Fors became a urologist to help people regain their health. He has extensive training in the latest procedures, and his clinical areas of interest include laparoscopic and robotic surgery for kidney and prostate cancer, pediatric urology, and incontinence. Dr. Fors finds it incredibly rewarding when he can improve or enhance the quality of his patients’ lives.
Board-Certified: American Board of Urology
Residency: Urology, University of Connecticut School of Medicine, Farmington, CT
MD: University of Wisconsin School of Medicine, Madison, WI
BSc: Biology, University of Wisconsin, LaCrosse, WI
Member: American Urological Association, Wisconsin State Medical Society, LUGPA
Dr. Erin E Salter, MD
Dr. Salter’s clinical areas of expertise include treatment of bladder, kidney, and prostate cancers. She prioritizes treatment plans personalized to each patient’s circumstances and values, incorporating the principles of active surveillance, advanced imaging, and genetic testing in addition to surgical management.
She also has a special interest in the treatment of women and men with urinary problems including urinary incontinence, pelvic organ prolapse, benign prostatic hyperplasia, overactive bladder, urinary retention and neurologic problems.
Dr. Salter performs open, robotic, and endoscopic procedures to offer a full scope of care.
Board-Certified: Board Eligible
Residency: Albany Medical Center, New York
MD: Saint Louis University School of Medicine
Member: American Urological Association
Advanced Practice Providers
The Advanced Practice Providers at Wisconsin Institute of Urology represent over 45 years of combined experience in urologic care. As part of being top-notch providers, our Advanced Practice Providers focus on the whole person when treating specific health problems and strive to educate patients and families on the effects these problems may have on them. Along with delivering high quality personalized care when diagnosing and treating our patients, Wisconsin Institute of Urology APP’s help our physicians in other ways as well, such as assisting in surgery, ordering and interpreting diagnostic tests such as labs and x-rays and prescribing medications. APP's are an integral part of the team at WIU.
Jessica Lillie, APNP
Tricia Koch, APNP
Heather Beck, APNP
Erin Downey, PA-C
Kirsten Donner, PA-C
Find board-certified urology care at Wisconsin Institute of Urology. Call us at 920-886-8979 or toll-free at 877-897-7747, or use our convenient Request an Appointment form. Our physicians, advanced practice providers and staff welcome patients from Appleton, Neenah, Oshkosh, Waupaca, Shawano, New London, Ripon, Fond du Lac and surrounding communities.
