
Overview
Theresa K. Hayssen, MD, is a general surgeon and colon & rectal surgeon at Ascension Wisconsin in Franklin and Brookfield. Dr. Hayssen is board-certified in both colon & rectal surgery, and general surgery. She provides surgical care to patients aged 16 years and older. Dr. Hayssen has a special interest in the surgical management of colon & rectal cancer.
Dr. Hayssen is highly rated in 4 conditions, according to our data. Her clinical expertise encompasses Familial Colorectal Cancer, Colorectal Cancer, Lynch Syndrome, Hernia Surgery, and Bladder Reconstruction.
Dr. Hayssen is board certified in The American Board Of Colon And Rectal Surgery - Colon And Rectal Surgery and The American Board Of Surgery - Surgery. She is actively involved in clinical research, participating in 1 clinical trial. Dr. Hayssen is currently accepting new patients.
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Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- PPO
- EPO
- HMO
- PPO
- EPO
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE SNP
- EPO
- POS
- PPO
- OTHER MANAGED MEDICAID
- EPO
- HMO
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- HMO
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- EPO
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
17000 W North Ave, Brookfield, WI 53005
9969 S 27th St, Franklin, WI 53132
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
Clinical Cancer Center - Froedtert Hospital
Douglas B. Evans, MD, is an independent general surgeon at Ascension Wisconsin in Wauwatosa, Wisconsin. Dr. Evans provides surgical care to patients of all ages. He delivers advanced surgical treatments using minimally invasive and robotic-assisted technology to repair abdominal conditions and other injuries. Robotic-assisted and minimally invasive surgery may lead to a faster recovery, shorter hospital stay, and less scarring. Dr. Evans is highly rated in 27 conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Pancreatic Ductal Adenocarcinoma, Neuroendocrine Tumor, Pancreatectomy, and Thyroidectomy. Dr. Evans is board certified in The American Board Of Surgery - General Surgery. Dr. Evans is currently accepting new patients.
Transplant Center - Center For Advanced Care - Froedtert Hospital
Dr. Ty Dunn is surgical director of the kidney and pancreas transplant programs and a professor of surgery at the Medical College of Wisconsin. Her surgical focus is on kidney, pancreas and islet transplantation, and living kidney donation. She has been actively involved in clinical outcomes research and translational research throughout her career, with areas of interest including immunosuppression, antibody mediated rejection, retransplantation, paired exchange and organ allocation policy. She serves as an associate editor for Clinical Transplantation and is a regular ad hoc reviewer for the American Journal of Transplantation, Transplantation, and Pancreatology. Dr. Dunn has served on multiple regional and national committees concerning kidney, pancreas and islet transplantation and she has an international reputation in islet cell auto-transplantation for patients with chronic pancreatitis. Dr. Dunn is currently serving as an At-Large Councilor of the American Society of Transplant Surgeons and as Vice Chair of the OPTN Pancreas Committee. Dr. Dunn is highly rated in 13 conditions, according to our data. Her clinical expertise encompasses Chronic Pancreatitis, Hereditary Pancreatitis, Childhood Pancreatitis, Pancreas Transplant, and Pancreatectomy. Dr. Dunn is board certified in Surgery. Dr. Dunn is currently accepting new patients.
Medical College Of Wisconsin
Tracy S. Wang, MD, is an independent general surgeon at Ascension Wisconsin in Milwaukee, Wisconsin. Dr. Wang provides surgical care to patients of all ages. She delivers advanced surgical treatments using minimally invasive and robotic-assisted technology to repair abdominal conditions and other injuries. Robotic-assisted and minimally invasive surgery may lead to a faster recovery, shorter hospital stay, and less scarring. Dr. Wang is highly rated in 19 conditions, according to our data. Her clinical expertise encompasses Hyperparathyroidism, Thyroid Cancer, Parathyroid Hyperplasia, Parathyroidectomy, and Thyroidectomy. Dr. Wang is board certified in The American Board Of Surgery - Surgery. Dr. Wang is currently accepting new patients.
Frequently Asked Questions about Dr. Theresa K. Hayssen
How do I make an appointment with Dr. Theresa K. Hayssen?
You can book an appointment with Dr. Theresa K. Hayssen by calling their office at 262-785-7740. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. Theresa K. Hayssen a top-rated expert for Familial Colorectal Cancer?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. Theresa K. Hayssen is classified as an Advanced expert for Familial Colorectal Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. Theresa K. Hayssen specialize in?
While Dr. Theresa K. Hayssen is a General Surgery, they have specific expertise in Familial Colorectal Cancer, Colorectal Cancer, and Lynch Syndrome. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within General Surgery.
Does Dr. Theresa K. Hayssen accept my insurance?
Dr. Theresa K. Hayssen accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 262-785-7740 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- Colorectal CancerDr. Hayssen isAdvanced. Learn about Colorectal Cancer.
- Familial Colorectal CancerDr. Hayssen isAdvanced. Learn about Familial Colorectal Cancer.
- Lynch SyndromeDr. Hayssen isAdvanced. Learn about Lynch Syndrome.
- Rectal ProlapseDr. Hayssen isAdvanced. Learn about Rectal Prolapse.
- Experienced
- Anal CancerDr. Hayssen isExperienced. Learn about Anal Cancer.
- Bladder ReconstructionDr. Hayssen isExperienced. Learn about Bladder Reconstruction.
- CellulitisDr. Hayssen isExperienced. Learn about Cellulitis.
- CholedocholithiasisDr. Hayssen isExperienced. Learn about Choledocholithiasis.
- Diverticular DiseaseDr. Hayssen isExperienced. Learn about Diverticular Disease.
- Familial Adenomatous PolyposisDr. Hayssen isExperienced. Learn about Familial Adenomatous Polyposis.


