Our Team

Dr. Steven Burack is a board-certified physical medicine and rehabilitation (PM&R) physician.

Dr. Burack received his medical degree from the College of Osteopathic Medicine at the New York Institute of Technology. He has practiced throughout Florida and specializes in PM&R and pain management.

Dr. Burack is the supervising physician for the Florida NIVA Health offices.

Dusty, a Melbourne native, has joined the NIVA Health Melbourne team as a Patient Experience Manager.  He was originally a high school band teacher in Jacksonville,FL but moved to the healthcare industry to share his passion for wellness after making radical changes to his health. While he no longer plays the french horn regularly, you can always find him noodling or strumming on something that makes noise when he's not prepping for a powerlifting meet or watching the game.

Dr. Jeremias R. Duarte is a fully-licensed physician from Columbus, GA.  His medical career began in the U.S. Army when he enlisted to serve as a combat medic. During his tenure in the military, Dr. Duarte has received over 15 awards and decorations, as well as being named battalion NCO of the Year while enlisted.  His service has included a deployment in support of Operation Iraqi Freedom, as well as tours of duty in the Republic of Georgia and Vicenza, Italy. 

Dr. Duarte graduated magna cum laude from Columbus State University with a Bachelor of Science in Applied Computer Science and a minor in Business.  After working for 2 years as a software developer, Dr. Duarte decided to pursue a full-time career in healthcare.  He received his medical degree from the Philadelphia College of Osteopathic Medicine.  Dr. Duarte completed his internship at Hackensack Meridian Health, Palisades Medical Center, in New Jersey. 

Dr. Duarte continues his military service as a commissioned officer and physician as a member of the Georgia Army National Guard.  NIVA Health Woodstock is honored to welcome Dr. Duarte as part of the team.

Joseph DuPont received his medical and surgical training in France and internationally.

Joseph DuPont has presented to his peers on the topic of bone grafting and hosted a television series on regenerative bone medicine.  He has authored a multitude of medical publications.

Dr. Easley is an accomplished physician with vast and comprehensive medical knowledge.  NIVA Health is honored to have him as the Supervising Physician for the Woodstock, GA office.  He has been certified by the American Board of Family Physicians since 1978 and has been recognized as a Fellow of the American Academy of Family Physicians since 1993.   With over 45 years of experience, his emphasis and insistence on providing the very best quality care has never wavered.   He continues to be well respected among colleagues and patients alike for his medical expertise, integrity and delivery of exceptional and compassionate care.

For over 14 years, Dr. Rafael Foss has been a distinguished leader in the field of wellness lifestyle programs, natural pain treatments and cutting edge therapies, including anti-aging and aesthetics services. Over 40,000 people have enjoyed the health benefits and transformational power of Dr. Foss’s health centers, now collectively known as NIVA Health. According to Dr. Foss "to doctor means to teach" and teaching healthy lifestyle choices and lifestyle potential is his top priority. Dr. Foss grew up with many health challenges, including allergies, asthma, and severe back pain due to scoliosis. These challenges drove him to create a pathway to better health for himself and to share that path with as many people as possible. His passion empowers others to live their full expression of health and thereby positively impact themselves, their families, and their community.

Dr. Foss is the founder of NIVA Health, which has become one of the nation’s premier and fastest growing natural health centers. He has been featured on ABC, NBC, CW, FOX, and many talk radio stations across the country to share his knowledge. Dr. Foss’s approach focuses on supporting and utilizing the body's ability to heal itself by creating and maintaining homeostasis within the body.

Dr. Foss received his Bachelor of Science in Human Biology from S.U.N.Y. Albany, NY. He is a board certified chiropractic physician and completed his studies in applied kinesiology. He received a Doctor of Pastoral Science and Medicine license from the Professional Wellness Alliance and received training under the Carrick Institute Neurology Diplomate Program. Dr. Foss is also a member of the Foundation for Wellness Professionals, a non-profit that serves the community on a regular basis through educational talks with a focus on disease prevention.

Dr. Foss, his wife Alina, and their daughter currently reside in Jacksonville, Florida. His family enjoys going to the beach, exercising, and experimenting with delicious and healthy foods.

Dr. Gary Guarnaccia earned his undergraduate degree in Biochemical Engineering from Columbia University and received his Doctor of Medicine degree from NJ College of Medicine in 1974.  He completed his residency at NYU Bellevue Hospital.  Dr. Guarnaccia has been in the field of Gynecology and Obstetrics for over 36 years and has received numerous awards including Castle-Connolly Top New York Doctors Award of New York.  He is an accredited GAINSWave® provider specializing in erectile dysfunction treatment for men.  Currently serves as a Clinical Assistant Professor at Rutgers Medical School and the Medical Director for NIVA Health’s Manalapan, NJ office.

Dr. James Joseph is a board-certified family medicine physician who has specialized in regenerative medicine for more than 20 years.

Dr. Joseph received his medical degree from Michigan State University in 1998 and then completed a fellowship in regenerative medicine. He has completed additional studies in stem cell harvesting, orthopedic application of stem cell therapy, and advanced aesthetics.

He is a member of a number of professional organizations, including the Academy of Anti-Aging Medicine.

Dr. Joseph is the Supervising Physician for the Michigan and Illinois NIVA Health offices.

Dr. Jason Lamarche attended the University of Ottawa in Ottawa, ON, Canada to study biology. After graduating with an honors bachelor of science in biology, he moved to Dallas, TX in 2006 to attend Parker College of Chiropractic. He graduated with his Doctorate of Chiropractic in 2009. During his studies at Chiropractic College, he studied various subjects such as anatomy, physiology, radiology, neurology, pathology, microbiology and many others. Dr. Lamarche earned a certification at Parker College as a Certified Clinical Chiropractic Neurologist in 2009.

Dr. Lamarche decided to attend chiropractic school after his father was diagnosed with a heart and lung condition that was so bad he was given 6 months to live. Medicine had no answers for him. He went to see a chiropractor who found that his spine was out of alignment and was putting so much pressure on the nerves going to his heart and lungs, it was causing those organs to shut down. Once he went through a series of spinal adjustments, his health was restored back to normal.

He is also certified in acupuncture. Acupuncture is a different approach compared to western medicine, and he himself was skeptical of whether or not it actually worked until he had a severe injury to both of his elbows. He had tendinitis that was so bad he couldn't even lift a bag of groceries. After trying everything, with minimal success he was thinking of going for a surgical consult, when a friend of his, who is an acupuncturist, offered to help him. After allowing her to treat him, his arms started to heal almost instantly. It was truly amazing. After that he felt required to learn this craft and now uses acupuncture on many of his patients.

He also served as the team physician for the Joliet Jaguars midget hockey team in 2009-2010. His main areas of interest comprise of neurology, pediatrics and lifestyle wellness. In his time off Dr. Lamarche enjoys playing hockey, golf, fishing and the outdoors.

Beverly “Danielle” has 9 years of experience with patient care.  She started her healthcare career as a Registered Nurse working at a local community hospital in Rockledge, FL.  In 2014, she decided to leave the hospital and go into outpatient care in the Oncology department. 

Danielle received her Bachelor of Science in Nursing from South University in 2018 and her Master of Science in Nursing from South University in 2020.  She is now a board-certified Family Nurse Practitioner.

Danielle became interested in a more holistic approach to medicine after working in the oncology field for 7 years.  She prefers to be proactive in the care she provides rather than reactive when it comes to the health of her patients.  When she's not caring for patients at our Melbourne NIVA Health office, she loves to read and spend time with her husband, 2 young sons and their two Australian Shepherds.

Dr. Chris Niedzinski is a leader in the fields of wellness, pain management, and nonsurgical therapies. He has been able to successfully treat his patients countless times. After seeing the  positive impact of these innovative therapies, he has become dedicated to helping others experience its life-changing effects.

Dr. Niedzinski works in NIVA Health’s office in Wixom, Michigan.

Catherine is board certified with more than 10 years years experience as a Family Nurse Practitioner in primary care, pediatrics, mental health, HIV and regenerative therapy.  She is also certified in emergency room nursing, with dual certifications in adult and pediatric trauma.  She was an ER nurse for 12 years prior to pursuing her advanced degree at Jacksonville University in 2010.

Born in West Virginia, Catherine comes to NIVA Health after working 3 years as a contractor for the VA and caring for our nation's great Veterans in upstate NY.  While living in upstate NY she had the privilege of meeting several Amish families where she witnessed a more holistic approach to medicine and health.  With her many years of experience, it had become obvious to her that modern medicine in combination with the food industries were keeping her patients sick instead of making them better, and this is when she turned her focus to a more holistic approach to healing.

In her spare time, she is busy raising her great nephew who is 6 years old and hearing impaired and spending time with her one and only daughter and their 2 dogs Luna Pearl and Fiona Lynn.

Dr. Zack Stalnaker is a board-certified chiropractic physician.

Dr. Stalnaker received his undergraduate degree as well as his doctor of chiropractic from Life University in Marietta, Georgia – the largest chiropractic school in the world. In addition, Dr. Stalnaker has undergone training in diet, nutrition, and exercise and is certified in the SHINE protocol for the treatment of ADD / ADHD.

At NIVA Health, Dr. Stalnaker works with many athletes and has extensive experience working with pregnant women and pediatric patients. Dr. Stalnaker works in NIVA Health’s office in Jacksonville, Florida.

Dr. Stalnaker was drawn to chiropractic care after he sustained a neck injury while surfing. After a few months of chiropractic care, he found he had not only recovered from his accident but also solved health problems that had plagued him for decades: sinusitis, migraines, allergies, and acid reflux. He is now able to control these conditions without having to take medication.

Dr. Stalnaker is active in a number of professional organizations, including the Christian Chiropractic Association, Florida Chiropractic Association, and the North Florida Chiropractic Society.

In his spare time, he enjoys spending time with his wife and two children, going to the beach, and working out.

Giacomina received her undergraduate nursing degree from Wagner College.  She worked in New York’s #1 hospital for 5 years on a busy med-surge and telemetry floor while caring for a diverse patient population.  She helped her hospital achieve magnet recognition, as well as serving as co-chair for the Hospital Acquired Infection committee.  She also became part of the clinical ladder program which allowed her to focus on nursing research while still providing direct patient care.  Giacomina is a wonderful addition to our NIVA Health Manalapan team.  In her spare time, Giacomina enjoys spending time her husband and two children cooking and getting together with family.

Jamie Waite is a board certified Family Nurse Practitioner by the American Academy of Nurse Practitioners with 6 years of experience working at University of Michigan Hospital in Ann Arbor, Michigan.  She earned her Bachelor's of Science in Nursing from University of Detroit Mercy in 2015.  While caring for her patients at the bedside, she advanced her practice and received her Master's of Science in Nursing from University of Cincinnati.

During Jamie’s time caring for patients in the Progressive and Intensive Care Unit, she was a distinguished leader as a frequent charge nurse and preceptor for new graduate nurses.

Jamie’s goal as a Nurse Practitioner is to establish relationships and tailor her treatments to meet the goals and needs of each individual patient. She believes in a holistic approach which includes treating the mind, body and spirit.  Jamie is thrilled to offer services to patients at NIVA Health Wixom.

Brian is a second generation Jacksonville, Florida native and is passionate about his hometown.  He received his Bachelors in Business Administration from the University of North Florida.  With his degree and vast experience in management of operations, Brian is driven to bring the highest level of patient care to NIVA Health.

The goal of any great leader is to have a successful team that is driven towards the same goal.  Brian is dedicated to building these types of results through team development and patient focus.  Each and every visit matters and he wants his patients to know we care here at NIVA Health.

When not working Brian enjoys spending time with his daughters who are both active in cheerleading and competition dance.  He is a true cheer/dance dad and is and will always be their biggest fan.  When not cheering, he enjoys spending quality time with his wife and traveling.  One of the few things he enjoys for himself is watching his Jaguars on Sunday.

Amber started her 20+ years in healthcare as a CNA at Medilodge of Howell, transferring to a few other rehab facilities along the way.  During her time working in healthcare she learned many different roles, which gave her the opportunity to advance to the Office Manager position.  She thoroughly enjoys working with patients and staff, knowing when to be serious while also making it fun.  As a mother of 3 beautiful children, two girls and one boy, Amber enjoys hiking, camping and being with family and friends.  She has two fur pups Argos and Brick, both were adopted from the local animal shelter in Howell, MI.  Having lived in Michigan for 35 yrs, Amber's lifetime family goal is to travel to all 50 states with her children.  NIVA Health Wixom is thrilled to have Amber as part of the team.

Michelle has an Associates of Arts degree from Jacksonville University. She is certified through NASM in personal and group fitness training. Prior to joining the NIVA Health family in 2015 she spent 4 years as a personal trainer helping clients lose weight and reach their fitness goals.

She is very passionate about sharing her knowledge of our programs that have specifically helped her overcome some of her own challenges with an auto-immune disease. She loves helping others and being able to share a program that changes lives!

Michelle lives near the beach in Jacksonville with her husband, teenage daughter and 8 year old son. Spending lots of time with her family, cooking, biking, and going to the beach are some of her favorite past times.

Roxeanna (Roxi) is a rare Florida native.  She spent her childhood in Texas; however, she returned to Vero Beach, Florida where she finished high school and met her husband of 28 years, Jim.

She has over 20 years in healthcare and has worked as a chiropractic assistant, customer service representative for a health insurance company, massage therapist and office manager.

Roxeanna has an Associate Degree in Massage Therapy as well as several credits in Elementary Education.  She decided to return to college in 2015 and completed her Bachelor’s Degree in Healthcare Organization Management.  NIVA Health Melbourne is thrilled to have Roxi as a part of the team.  

She has two wonderful adult children and daughter-in-law and a precious grandson.  In her spare time, Roxi enjoys spending time with family, reading, traveling and making custom made wreaths.

Renee has an Associate Degree in Fashion Merchandising and a minor in Interior Design from Patricia Stevens Career College and Finishing School, Milwaukee, WI.  Prior to joining NIVA Health in March 2019, she was a Clinic Director for a Medical Spa and spent over 20 years in the Fine Jewelry Industry as a Jewelry Designer, Sales Professional and a Business Owner of Custom Fine Jewelry Store.

She truly enjoys sharing her passion of helping and educating others by coaching them to reach their wellness and weight loss goals.  Helping people feel confident in themselves is why Renee is motivated every day to help make a change in someone's life.

Renee is married and has four daughters.  Her favorite pastimes are being with her family, traveling, crafts, shopping, long walks with her dogs and being a Cheer Mom.

Kory comes to us with 10 years of experience in business administration and 3 years of patient experience in patient care.  With a strong passion for helping others, he brings a vast skill set relating to patients and easing their concerns while educating them along the way.  Kory's journey started in physical therapy as a Patient Care Coordinator, where he quickly saw that patients gravitated towards him.   NIVA Health Manalapan is thrilled to have Kory be apart of the team.

He enjoys hiking and taking trips with his dog Anubis.  As a musician, he also enjoys playing saxophone and other instruments, teaching and actively performing.  When not performing, he enjoys writing songs and spending time with friends and family.

Kiley joined the NIVA Health team in March 2021 as the Office Manager of the Woodstock, GA location.  Kiley comes from an extensive background in medical billing and healthcare.

Kiley graduated from Georgia Southern University with a degree in Public Relations and Communications with a Minor in Writing.  She received her college internship with Meadows Regional Medical Center where she worked in the Public Relations department creating billboards and press releases for the hospital.  After graduation, Kiley moved to Nashville, TN to work with Elite Sports Medicine and Orthopedics in Medical Administration.

After a couple of years Kiley moved back home to Atlanta where she began working in Healthcare and Medical Billing.  In 2021 she decided it was time to take her knowledge and expertise in healthcare billing and joined NIVA Health Woodstock office.  We are thrilled to have Kiley as a part of the NIVA Health team.

Tiffany graduated from National Louis University with her Master of Healthcare Administration in 2016.  Prior to joining NIVA Health's Naperville, IL location, Tiffany has worked in several different entities of healthcare i.e. dentistry, long term healthcare and home health, her experience in healthcare ranges from direct patient care to midlevel management.