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About Us

As health information proliferates over the internet, we are grateful that more patients like you are discovering that alternative medicine can “help the body heal itself.

The first step to gain access to Serenity Health Care Center’s caring, fully-integrated expert resources is what you are doing right now: take control and assume a proactive role in your health.

Our dynamic center is the largest of its kind in the Midwest. We provide a personal and integrative healing approach to hundreds of satisfied patients in the Milwaukee-Waukesha metropolitan area.

We also receive people from throughout the United States and internationally through long-distance visits and Telehealth.

Our medical specialists on staff cover these areas:

Trained in multiple naturopathic medicine modalities, including nutritional medicine, homeopathy, herbs, and body medicine.

  • Functional Medicine
  • Naturopathic Medicine
  • Environmental Medicine
  • Women’s Health
  • Bio-identical hormone therapy
  • Family Practice
  • Internal Medicine
  • Allergy and Immunology
  • Pediatrics
  • Autism
  • ADHD
  • POTTs
  • Detoxification
  • Nutrition
  • Anti-Aging
  • Homeopathic Medicine & More

Many of our certified health practitioners are speakers and teachers in their fields of expertise. Get to know who they are here. Serenity Health Care Center Providers.

Your Functional & Integrative Medicine doctors near Milwaukee and beyond

Our philosophy is simple. We provide the path to achieve optimal wellness, so you can have the quality of life you desire.

At Serenity Health Care Center, we have created a team of renowned alternative medicine physicians, specialists and nurses on the cutting edge of Functional Medicine.

Each of our Functional Medicine practitioners has extensive training and countless hours of continuing education to ensure we can meet your health care needs.

We have 60 years of combined medical experience on our team. We work in conjunction with one another to solve your medical challenge with the most up-to-date information and state-of-the-art holistic care.

Meet Our Providers

Dr Debra Muth, owner

Dr. Deb is a leading-edge provider using natural supplements and bioidentical hormones to heal the body.

Integrating these diverse therapies with allopathic Western Medicine has enabled Dr. Muth to offer a highly refined approach that produces lasting results.

Dr. Debra Muth’s Credentials include:

  • Naturopathic Doctor ND
  • Women’s Health Nurse Practitioner, WHNP
  • Board Certified Anti-Aging Specialist BAAHP
  • Lyme Literate Practitioner for treatment of chronic Lyme disease

Dr. Debra Muth, Certified Naturpathic Doctor

Debra Muth graduated as a nurse in 1995 and completed her degree as a nurse practitioner in 1998. She completed her doctorate in naturopathic medicine in 2001 and became a board-certified anti-aging regenerative medicine specialist in 2003 and a master herbalist in 2011.

She worked for six years in traditional medicine as a women’s health nurse practitioner before joining an integrative medical practice in 2001.

In 2011, she founded Serenity Health Care Center in Waukesha, Wisconsin. Serenity is one of the Midwest’s foremost integrative clinics providing care for patients worldwide, offering cutting-edge protocols.

Debra has served as faculty to naturopathic students wishing to complete their residency. In addition, she has trained medical doctors and nurse practitioners that aim to practice integrative medicine.

Since 1998 Dr. Debra Muth has specialized in hormones and women’s health. In 2001, she decided to branch out and specialize in chronic fatigue, fibromyalgia, food sensitivities, thyroid, chronic infections, and heavy metals.

Over the years, Dr. Muth has specialized in treating Lyme disease, toxic mold, chemical sensitivity, and of course, hormones.

Clear documentation shows that people with Lyme disease also suffer from Candida, allergies both food and seasonal allergies, heavy metals, high cholesterol and hormonal imbalances, recurrent pregnancy loss or infertility, and adrenal fatigue.

Dr. Muth is known as a medical “private detective.”

She examines numerous areas to get to the root cause of the symptoms – leaving no stone unturned until finding the answers you are seeking regarding your health. With her experience in treating a wide range of conditions, Dr. Muth has created a successful comprehensive program for treating chronic diseases.

To date, she has worked with over 5,000 patients from around the world.

Dr. Muth has earned an international reputation as one of the leaders in functional medicine, specializing in the treatment of the following conditions:

  • Hormone Imbalance, PMS, Menopause, Perimenopause, Men’s Hormones, Anti-Aging
  • and more
  • Lyme Disease
  • Toxic Mold, Heavy Metal Toxicity, Chemical Sensitivities & Allergies
  • Sexual Dysfunction
  • Gastrointestinal & Systemic Problems
  • Thyroid Dysfunction (Hypothyroidism, Hyperthyroidism & Hashimoto’s Disease)
  • Adrenal Fatigue & Chronic Fatigue Syndrome
  • Detoxification
  • Chronic Illness & Chronic Pain
  • Infertility


Dr. Muth authored “The Dark Side of Injury” and The Essence of Health and Vitality – Your Guide to Healthy Living and contributed to Audacious Aging. In addition, she has presented over 150 lectures throughout the United States to both professionals and patients on topics ranging from hormones to detoxification and spiritual living.

Greg Brown, MD
Dr Gregory Brown, MD

Dr Gregory Brown, MD, is a Board-Certified Internist who has been practicing Internal Medicine and Emergency Medicine for over 30 years. Dr Brown has been our Medical Director since 2011 and has earned a reputation as one of the leading functional doctors in the Midwest.

Gregory L. Brown’s Credentials include:

  • The University of Nebraska, College of Medicine, MD
  • Completed Residency at Sinai Medical Center in 1987
  • Board Certified in Internal Medicine
  • Lyme Disease Therapy by ILADS
  • Medical chelation by ACAM
  • Biomedical Therapy in ASD by ARI (Autism Research Institute)

Medical Director for Serenity Health Center

Dr. Gregory Brown is a board certified internist who has been in practice since 1988 with extensive experience in Internal Medicine and Emergency Medicine.

Since 2008,  Dr. Gregory Brown  has been practicing functional medicine with a focus on the integrative medical treatment of the Autism Spectrum Disorders,  Attention Deficit Disorder (ADD) and  Attention Deficit Hyperactivity Disorder (ADHD), as well as the many immune, infectious, gastrointestinal and systemic problems faced by these individuals and many others.

Dr. Gregory Brown’s practice has grown to include chronic infectious disease in children and adults, particularly chronic Lyme disease, and the behavior and functional impairments these infections can cause.

Education, Certification and Training

In addition to his training in Internal Medicine and Emergency Medicine, he holds certifications and training in:

  • Medical chelation by ACAM  (American College for Advancement in Medicine)
  • Biomedical therapy in ASD by ARI  (Autism Research Institute)
  • Hyperbaric Medicine by IBUM  (International Board of Undersea Medicine)
  • Lyme disease therapy by ILADS  (International Lyme and Associated Disease Society)
  • Defeat Autism Now! Practitioner
  • Gregory Brown, MD, graduated from the University of  Nebraska and has 18 years of experience in Emergency Medicine.

Dr Brown has earned a reputation as one of the leading functional doctors in the Midwest, specializing in the treatment of the following conditions:

  • Lyme Disease
  • Autism Spectrum Disorders
  • Chronic Illness & Immune Problems
  • Gastrointestinal & Systemic Problems
  • Behavioral & Functional Impairments
  • Thyroid Dysfunction & Fatigue Syndromes

Speak with our patient care expert today.

Amy Hoffman, NP
Amy Hoffman, NP, AGPCNP

Amy Hoffman, NP, AGPCNP, is a Board-Certified Adult-Gerontology Primary Nurse Practitioner and treats a wide variety of conditions, including Serenity’s Gastrointestinal Program and Ultrasound Therapy for Erectile Dysfunction.

Amy Hoffman, NP Credentials include:

  • Master of Science, Nursing
  • Bachelor of Science, Psychology
  • ANCC Board-Certified Nurse Practitioner (ACPCNP-BC)
  • Lyme Literate Practitioner with ILADS certification

Practitioner, Master of Science in Nursing

With an advanced degree in nursing and psychology, Amy understands the importance of psychological health impacting physical health.

Amy is a board-certified Nurse Practitioner (AGPCNP*) who joined Serenity Health Care Center as a holistic practitioner. After working in ICU, Amy noticed that the patients were being treated based on their symptoms and not as a whole person. Amy sought to treat patients as individuals with unique physical, psychological, and spiritual needs instead of as individual symptoms.

Amy offers various services for adults, including medical and psychological diagnostic evaluation and treatment using the most effective holistic and integrative protocols. Her focus is on preventing the onset of chronic disease and finding the root cause of chronic illness and autoimmune disease.

Amy is excited to implement treatment protocols taught by groups like A4M, ACAM, IFM, and AAEM.

She is passionate about working with women and preventing age-related diseases through bio-identical hormone replacement therapy and the environment’s role in our health. Amy has been trained by the industry’s best hormone practitioners: Dr Jonathan Wright, Pam Smith, Ron Rothenberg and Terry Hertoghe.

* AGPCNP -adult-gerontology primary care nurse practitioner

Education, Certification and Training

  • Master of Science, Nursing – Marquette University – 2013
  • Bachelor of Science, Nursing – University of Wisconsin, Milwaukee– 2008
  • Bachelor of Science, Psychology – University of Wisconsin, Milwaukee – 2003
  • Board-Certified Nurse Practitioner (AGPCNP-BC)
  • Critical Care Nurse Practitioner – 2014-2015
  • St Luke’s Medical Center – 2008-2015
  • ICU Nurse – 2008-2014 with CCRN certification
  • Trained under Dr Jonathan Wright, Pam Smith, Ron Rothenberg & Terry Hertoghe

Amy Hoffman, NP, specializes in treatment of the following conditions:

  • Lyme Disease
  • Hormonal Imbalance
  • Gastrointestinal & Systemic Problems
  • Erectile Dysfunction & Sexual Dysfunction (Ultrasound Therapy and PRP trained)
  • Thyroid Dysfunction (Hypothyroidism, Hyperthyroidism & Hashimoto’s Disease)
  • Adrenal Fatigue & Chronic Fatigue Syndrome
  • Toxic Mold, Heavy Metals & Allergies
  • Detoxification
  • Nutritional Counseling
  • Weight Loss & HCG Weight Loss
  • Chronic Illness & Chronic Pain
Kayla Giorno, CCT
Kayla Giorno, CCT headshoot

Kayla Giorno, CCT, uses thermography to detect subtle physiologic changes accompanying pathologies such as fibrocystic disease, vascular disease, infection, cancer and sports injuries.

Thermography is an imaging technology, using digital infrared thermal imaging, and is a state-of-the-art diagnostic technique.

Kayla Giorno’s Credentials include:

  • Certified Cardiographic Technician

Thermography, Certified Cardiographic Technician 

Kayla is inspired by proactive preventative methods for detecting diseases in humans and animals. Using digital infrared thermal imaging (DITI) Kayla detects subtle changes in the skin’s surface temperature. The technology creates a color map that reflects the skin’s temperature differences.

Thermography can look at the organs, skin, muscle, ligaments, bones, joints, myofascial system, lymph system, immune system, and more. The only thing thermography cannot detect is the brain and genitals.

Kayla has uses Thermography to identify breast pathologies, sports injuries and muscle strains, integrating it with our biofeedback machine “ONDAMED” as a treatment modality. This uses Pulsed Electromagnetic Field (PEMF) combined with pulse biofeedback to enable Kayla to relieve pain, improve cell function and circulation, and promote relaxation.

Education, Certification and Training

  • Certified Cardiographic Technician, CCT

Kayla Giorno, CCT, specializes in treatment of the following conditions: 

  • Breast
  • Full cranial
  • Deep-rooted periodontal issues (often missed on dental x-rays)
  • Comprehensive thyroid
  • Carotid artery
  • Coronary issues
  • Complete breast scan 8 years earlier than a mammogram for cell changes
  • Lymphatic congestion and lymph node activity 
  • Full spine (upper and lower back)
  • Major organs: stomach, diaphragm, gallbladder, liver, large and small intestines, kidneys, ascending and descending colon, ovaries, uterus, bladder and more
  • Intestinal inflammation
  • Lyme
  • Joint pain

Kayla is an annual speaker with Serenity’s Breast Talk and other breast health-related events.

Charity Prager, HHP
Charity Prager, HHP, Serenity health care center

Charity Prager, HHP applies an integrative approach to weight loss and nutritional lifestyle changes by incorporating nutritional counseling, biofeedback, BioScan, Ondamed, supplementation, homeopathy and herbal extracts. 

Charity Prager’s Credentials include:

  • Certified Holistic Health Practitioner
  • Advanced Level II Certified BioScan MSA Technician emphasizing
  • Holistic Nutrition

Holistic Nutritional Health Specialist and BioScan MSA Technician

Charity Prager, HHP, is a Holistic Health Practitioner and an Advanced Level II Certified BioScan MSA Technician emphasizing in Holistic Nutrition.

Her passion for health started many years ago when she learned the importance of living a healthy lifestyle and incorporating that into her daily life. Through her own health struggles with skin, endocrine (hormone, thyroid, adrenal) imbalances, chronic fatigue, and intensive bacterial overload, she realized the importance of incorporating supportive measures to help the body optimize to its full potential. Charity strives to help others by teaching them about their bodies while helping them to uncover the root causes of their symptoms. In addition, she works with the client to create a path to health and wellness, focusing on preventing chronic illness.

Charity is a lifelong learner, finding new ways to advance her knowledge and skills by implementing new protocols to assist clients in their health and wellness journey. She believes in a holistic approach, incorporating programs addressing a person’s physical, mental, and emotional status. Programs are designed using holistic nutritional counseling, biofeedback, supplementation, homeopathy, herbal extracts, LET therapy, and essential oils.

She utilizes FDA-cleared non-invasive equipment like BioScan and Ondamed, which assist in making subtle changes to the imbalances in the body.

Nanette Cambronero, FNP-BC
Charity Prager, HHP, Serenity health care center

Nanette Cambronero, FNP-BC, is a distinguished board-certified nurse practitioner with a profound dedication to the healthcare of both pediatric and adult populations. With an educational foundation fortified by a Master of Science and Bachelor of Science in Nursing, coupled with prestigious recognition as an ANCC Board-Certified Family Nurse Practitioner, Nanette embodies a harmonious blend of in-depth medical knowledge and a heartfelt, personalized approach to patient care.

Nanette’s journey in healthcare is marked by a diverse array of experiences. Her career blossomed in acute care settings, where she honed her skills across various domains, including inpatient medical-surgical units, urgent care facilities, dermatology, and even academia as a clinical nursing instructor. With over a decade of experience, she stands as a beacon of expertise and compassion in the healthcare field.

A pivotal moment in her career was the integration of holistic healthcare practices alongside conventional medicine, a philosophy she embraced during one of her clinical rotations. This revelation not only broadened her medical perspective but also fortified her commitment to a comprehensive, integrative approach to health and wellness. Nanette’s practice is a testament to her belief that traditional and holistic medicine can coexist and synergize to enhance patient well-being and longevity.

Nanette’s dedication extends beyond her professional life. She personally cherishes spending any free time with her husband, daughters, grandson and fur babies. Her personal experiences have deepened her understanding of the unique healthcare needs of the younger generation, fueling her passion for offering alternative and holistic care options to children and adolescents.

In terms of her areas of expertise, Nanette is proficient in diagnosing and treating a wide range of conditions. Her specialties include Lyme disease, thyroid dysfunction, adrenal fatigue, gastrointestinal and systemic issues, toxic mold, heavy metal detoxification, allergies, anxiety, depression, hormonal imbalances, weight loss, nutritional counseling, preventative care for chronic illnesses, and a suite of Med Spa Services aimed at rejuvenation and restoration.

Nanette’s academic accolades, including her affiliation with the Sigma Theta Tau International Honor Society, and her hands-on experience at reputable institutions across Wisconsin.

In sum, Nanette Cambronero, FNP-BC, is not just a healthcare practitioner; she is a devoted advocate for a holistic, patient-centered approach to health, combining medical expertise, personal understanding, and a comprehensive view of well-being to enrich the lives of her patients.

Colleen Wichmann, RN, Thermography Technician

Colleen Wichmann, RN, Certified Thermography Technician uses digital infrared imaging as a non-invasive, painless diagnostic tool used for the early detection of autoimmune disease, cancer and precancerous conditions, gastrointestinal issues, musculoskeletal abnormalities, toxicity, and vascular disease.

Most of Serenity’s patients undergo this simple test to uncover hidden illnesses or as a benchmark for monitoring health improvements.

Colleen Wichmann’s Credentials include:

  • Registered Nurse
  • Certified Clinical Thermography Technician

Registered Nurse for Serenity Health Care Center since 2017

Colleen Wichmann has been a Registered Nurse since 2015 after many years of working with patients as a CNA and Medication Technician in Assisted Living and Memory Care facilities. 

She is also a Certified Clinical Thermography Technician, helping to identify inflammation and asymmetric thermal patterns that indicate dysfunction in the body.

Since Colleen can remember, she has been interested in wellness, nutrition and nutritional healing, disease prevention, and Functional Medicine. She strongly believes in looking at the body as a whole unit with many moving parts and treating the root cause of illness – rather than only focusing on individual symptoms.

Her favorite quote: “If you listen to your body when it whispers, you won’t have to hear it scream.”

Education, Certification, and Training 

  • Associate of Applied Science in Nursing
  • Registered Nurse
  • Clinical Thermography Certification

Colleen Wichmann, RN, specializes in the treatment of the following conditions using Medical Thermography: 

  • Breast
  • Deep-rooted periodontal issues (often missed on dental x-rays)
  • Comprehensive thyroid
  • Carotid artery
  • Coronary issues
  • A complete breast scan detects abnormalities 7-10 years earlier than a mammogram for cell changes
  • Lymphatic congestion and lymph node activity 
  • Full spine (upper and lower back)
  • Major organs: stomach, diaphragm, gallbladder, liver, large and small intestines, kidneys, ascending and descending colon, ovaries, uterus, bladder, and more
  • Intestinal inflammation
  • Lyme
  • Joint pain

Patient Testimonials