Medical Team

When it comes to breast cancer care, there’s no substitute for experience, leading-edge technology and comprehensive services. The highly-trained physicians and staff at Mercy are dedicated to helping every step of the way. If you have a breast health concern, let our team of experts provide you with the care and support you deserve.


Susan Beck, DO, FACOS
Medical Director, Mercy Katzmann Breast Center

Dr Susan Beck

Dr. Susan Beck, breast surgeon and medical director at Mercy’s Katzmann Breast Center, graduated from the University of Osteopathic Medicine & Health Sciences (now Des Moines University) in 1984. She went on to complete a surgical internship and residency at Des Moines General Hospital until 1989. After completion of her residency, Dr. Beck joined a private practice surgical group in Des Moines. In 1997, she joined Mercy Surgical Affiliates and, in 2000, she became part of the team at Mercy Katzmann Breast Center.

Since joining Mercy Katzmann Breast Center, Dr. Beck has received Breast Ultrasound Training with certification from American Society of Breast Surgeons, (2009, recertified in 2014) as well as certification in Oncoplastic Breast Surgery, with advanced training in minimally-invasive techniques in breast surgery (2006 to current). In 2016 she received certification for the Invuity Hidden Scar™ Surgery program.

Throughout her career, Dr. Beck has been, and still is, involved in medical and surgical education. She was part of the teaching faculty for the surgical residency at Des Moines General and now Mercy since 1989. She has also welcomed medical students and physician assistant students for rotations on a regular basis. Dr. Beck served as Chair of the Department of Surgery at Des Moines University from 2006-2009. Dr. Beck has been a member of the American Society of Breast Surgeons since 1999, and is a member of the American College of Osteopathic Surgeons and has been awarded Fellow.

In addition to her professional achievements, Dr. Beck has been involved with many women’s health activities and organizations for the last decade. Locally, she has worked with the Des Moines affiliate of the Susan G. Komen Foundation, Hoops 4 Hope, an Iowa Department of Public Health outreach program at the women’s correctional facility in Newton, and served on the board at Innervision's free clinic in West Des Moines where she also volunteered time to help women with a basic screening test. Dr. Beck has also worked with Logos Holistic Ministries in developing countries around the world. In her spare time, Dr. Beck is working toward a Master's in Public Health and participates in global medical missions.

Tiffany Torstenson, D.O., FACOS
Breast Surgeon

Dr. Torstenson finished her general surgery residency at Mercy Medical Center in 2012. She went on to a breast surgical oncology fellowship at Mayo Clinic in Rochester, Minn., which she completed in 2013. She returned to join in partnership with her mentor and medical director of Katzmann Breast Center, Dr. Susan Beck.

Dr. Torstenson is actively involved in numerous clinical trials and is a huge advocate of these for her patients. She has multiple publications and speaking appearances. She is skilled in ultrasonography and her focuses are on oncoplastic breast surgery and nipple sparing mastectomy. She is actively involved in the surgical education of the residents in the general surgery program at Mercy Medical Center.


Jan Franko, M.D., Ph.D., F.A.C.S.
Oncologic Surgeon

Dr Jan Franko








Dennis Whitmer, D.O., F.A.C.O.S., F.A.C.S.
General Surgeon

Dr. Dennis Whitmer








Tracey Jurgensmeier, ARNP, MSN, OCN
Nurse Practitioner

Tracy Jurgensmeier


Tracey, the nurse practitioner and breast health specialist at Mercy Katzmann Breast Center, is available to answer questions and educate patients concerning breast health. She can address concerns, teach breast self-examination and help find the resources that are needed to address any breast health issues patients may be facing.

Tracey may be reached by calling (515) 222-7830.





Tammee Stebbins, OTR/L, CLT-LANA
Lymphedema Specialist

Tammee Stebbins

As a lymphedema specialist, Tammee offers a wide range of therapies for women suffering from the uncomfortable, often debilitating impact of lymphedema. She provides education about the condition, as well as comprehensive manual Vodder massage techniques, specialized bandaging, exercise techniques and measuring for and ordering custom compression garments.

In addition, Tammee offers other types of treatment for extremity range of motion deficits, extremity weakness, pain control and scar adhesion relief. Treatment is also available for other diagnoses relating to lymphedema, especially in the area of gynecological issues.

Tammee offers a lymphedema support group the first Monday of each even month at 6 p.m. at Mercy Katzmann Breast Center, 1601 NW 114th St., Suite 151, Clive. She also directs a lymphedema aquatic exercise class on Tuesdays from 4:30-5:30 p.m. at the Mercy Health & Fitness Center in Clive.


Amanda Richer, RN, BSN, OCN
Breast Health Navigator

Amanda Richer

In her role as breast health navigator, Amanda ensures breast cancer patients receive the best possible care, based on their individual needs. As the term navigator suggests, her primary responsibility is to help patients “navigate” the health care system throughout their illness. She is available to provide education and support to patients as well as practical assistance in eliminating certain barriers such as transportation or financial concerns. Amanda serves as a point of contact for patients and collaborates with other care providers to assure our patients have access to a myriad of cancer care services at Mercy and within the community. Prior to becoming the breast health navigator, Amanda spent 13 years as a cancer and oncology nurse.

Amanda may be reached by calling (515) 222-7853.



Trish Steenhoek, RT (R) (M), CN-BI
Mammography Care Coordinator and Breast Health NavigatorTrish Steenhoek

When patients are called back for additional images or testing after an abnormal mammogram, Trish steps in to help the patient navigate through the process. She provides initial support by coordinating imaging, biopsies or other procedures, and also helps arrange transportation to get patients to and from appointments, financial assistance and connects patients with additional resources, as needed.

Trish can be reached by calling (515) 222-7558.



(515) 247-3121
1111 6th Avenue
Des Moines, Iowa 50314

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