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Many people think in-vitro-fertilization (IVF) is the only solution to infertility. Guess what? It is not. Let us tell you about another option that you may have never heard of, and why you should consider it.


NaProTECHNOLOGY® is a different way of looking at reproductive health problems, but it is not “alternative medicine”. NaProTECHNOLOGY® trained physicians are physicians, trying to get to the root cause of your infertility problem and correct it. This starts with detailed tracking of the woman’s menstrual cycles. Problems in the cycle can then be corrected and the natural result is that conception often happens naturally.

Here are a few reasons to consider NaProTECHNOLOGY® instead of IVF:

1. No ethical issues.
IVF can be morally problematic for couples who see life as beginning at conception. The process of embryo creation in a lab can involve steps that makes some couples uncomfortable. Often embryos are then frozen for later use or they may be destroyed. For those that are pro-life, this may not feel like an ethical option.
2. It’s A LOT cheaper than IVF.
NaProTECHNOLOGY® visits are typically covered by health insurance, while IVF usually isn’t. (In fact, IVF can cost tens of thousands of dollars!).
3. It’s safer for mom and potential babies.
IVF disrupts and overrides your natural fertility cycles and intentionally stops it from working properly. With IVF, the chance of multiples is higher, which can result in prematurity and low birth weight and the chance of an ectopic pregnancy is also higher. Also, Babies born through IVF are at greater risk for health concerns like cardiovascular problems. With NaPro, the goal is to help the woman to have a healthy, normal menstrual cycle, to work WITH her body, and to make it function optimally.
4. It can actually help make you healthier.
Your cycle and your reproductive health are a part of your overall health! IVF truly does not make you healthier in any way. On the other hand, with NaPro, correcting problems in your natural menstrual cycle can absolutely make you healthier.
5. It works! Studies show a greater than 50% rate of women delivering healthy babies after NaProTECHNOLOGY® treatments.

Our NaProTechnology® Providers

Dr. Madeleine Guevara

Dr. Madeleine Guevara is an obstetrician/gynecologist, wife, and mother of four children. She sees patients from early adolescence through the full spectrum of life including after menopause. She is commonly consulted by families and individuals desiring a holistic, life-affirming, Catholic approach to women’s care. This includes routine visits and physicals, fertility awareness and family planning, obstetrics, high risk prenatal care and deliveries, minimally invasive gynecologic surgery, robotic surgery, NaProTECHNOLOGY® and infertility.

Dr. Guevara graduated from Michigan State University College of Osteopathic Medicine in 2004, and completed internship and residency at Ingham Regional Medical Center in Lansing, Michigan. She then worked in rural Northern Michigan for 12 years prior to moving to Green Bay. She served as the medical director at CareNet Pregnancy Center of the Eastern Upper Peninsula, received extra training at Cleveland Clinic in microsurgical fallopian tube repair and reanastomosis, and has completed her training as a CrMS Medical Consultant through the Saint Paul VI Institute for Human Reproduction in Omaha, Nebraska. She received her board certification from the American Osteopathic Board of Obstetrics and Gynecology, and is a member of the Catholic Medical Association.

“Being a part of the St. Gianna Family is an answer to many prayers. To know, love, and serve God through my work is truly rewarding. My passion is to help women take an active role in improving their health – physically, spiritually, and emotionally. I am pleased to see what the future brings and how the Holy Spirit will continue to renew our lives and our mission.”
-Dr. Guevara

Dr. Charles Cassidy

Dr. Charles Cassidy completed his undergraduate degree in engineering at the University of Notre Dame and went on to complete law school and obtain a master’s degree in philosophy at Georgetown University. He practiced law with Catholic Charities of Los Angeles for two years before serving with Catholic Relief Services in Moldova for one year. He completed medical school at the University of California San Francisco and a residency in family medicine at John Peter Smith hospital in Fort Worth, TX. During residency he was trained in Natural Procreative Technology at the Pope Paul VI Institute in Omaha, NE, and obtained advanced training in obstetrics, surgery, ultrasound, HIV, and tropical medicine. After residency, he volunteered in a rural Haitian hospital for 6 months before moving to Green Bay to begin work with the St Gianna clinic in 2019.

At the St Gianna Clinic, Dr. Cassidy provides family medicine and women’s care services. Dr. Cassidy says his patients should expect to be part of a shared decision-making process. “I see myself as an advocate for patients in a health care system that is increasingly difficult to manage,” said Dr. Cassidy. “I see physicians as the natural attorneys of the poor, that’s why I make an extra effort to help patients get the care they need.” Dr. Cassidy provides routine care for children and adults, as well as general obstetrics and gynecology services. Dr. Cassidy is fluent in both English and Spanish, and is certified by the American Board of Family Medicine.

As a Certified Fertility Care Medical Consultant, Dr. Cassidy is trained in the diagnosis and treatment of gynecologic and reproductive health conditions using the Creighton Model FertilityCare System and NaProTECHNOLOGY®.

“It is my goal to provide up-to-date information, as well as recommendations, to help patients decide what the best course of action might be.”
-Dr. Cassidy

Dr. Thomas Reinardy

Dr. Reinardy is an Obstetrician and Gynecologist that has been in practice in Wisconsin since 1997. He has interests in all aspects of female health including obstetrics, well women exams, pelvic floor dysfunction and incontinence. He is able to provide care from young adulthood through menopause and assists in diagnosis and treatment of infertility, prenatal care and delivery, and nearly all forms of gynecologic surgery including minimally invasive surgery and robotic procedures. He grew up in Wisconsin with 8 brothers and sisters. He completed his undergraduate degree at Marquette University, medical school and UW Madison and completed his residency at the University of Wisconsin in Madison.

Dr. Reinardy is married to his wife Angie and has two adult children. He practiced in Oshkosh for 26 years and held positions of leadership at Mercy Medical Center such as department chair, medical records chair, credentialing chair and most recently the President of the Medical Staff. He enjoys the outdoors and spends time hiking, fishing, boating and hunting.

After 26 years of practicing medicine in ever larger systems, he came to St. Gianna where he hopes to restore the relationships between provider and patients. His philosophy is to educate and inform patients and help patients to make choices about their health with guidance and support. He sees this as the best place to develop lasting patient relationships and is thrilled to be a part of the team at St. Gianna!

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