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Our Team

The experienced healthcare providers at NIVA Health specialize in helping relieve pain and addressing your toughest symptoms with natural remedies to help you avoid surgery and stay off medications. At NIVA Health, we work hard to exceed your expectations.

Please take a moment to learn more about our team of providers below.

Dr. Steven Burack, DO

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 Burgess, Patient Experience Manager

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.

Kelly Chaddha, MSN, APN

Kelly is Board Certified as a Primary Care Nurse Practitioner graduating from Walden University with her undergraduate studies from Saint Peter’s University.  Kelly has 16 years’ experience with patient care, which began in 2005 where she specialized in Orthopedics at Hackensack University Medical Center.

Integrating her compassionate and caring personality, Kelly has decided to take a more holistic approach to patient care combining her years of western medicine with an eastern influence.  She feels that both aspects when combined can result in the most positive results for patients.  NIVA Health Manalapan is lucky to have Kelly as part of the team.

Kelly is married and has twin boys.  She was raised in North Arlington, NJ and currently lives in Middletown, NJ.  In her spare time, Kelly enjoys meditation and yoga!

Dr. Augusto de Leon, MD

Dr. de Leon is originally from Baltimore, MD in 1994 he moved to Palm Coast, Florida where he still lives today.  He finished college at the University of Maryland at College Park Class of 1983.  In 1987 he graduated from Medical School from West Visayas State University College of Medicine.  He went on to have residency training at Franklin Square Hospital Center in Baltimore, MD where he graduated in 1994 from the Internal Medicine Residency Program.

Dr. de Leon went on to work as a Primary Care Physician for Florida Health Care Plans for the past 27 years in Palm Coast, Florida before joining NIVA Health.

In his free time he enjoys boating, fishing and golf.  He loves to eat seafood and enjoys his way around the kitchen to cook varies dishes.

Jessica Dikhow, FNP-BC
Jessica is a Board-Certified Family Nurse Practitioner with a background in Regenerative Medicine.  She has gained experience working as a medical surgical registered nurse for five years which aided in her current knowledge.  Jessica has a Bachelor’s degree from Madonna University and a Master of Science in Nursing degree from South University.  Jessica truly believes in being a strong advocate to her patients by promoting health and wellness. She aspires to help her patients achieve their goals and improve their quality of life.
Dr. Jeremias Duarte, DO

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.

Dr. Raymond E. Easley, DO

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.

Dr. Rafael Foss, BS, DC, DPSc

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, MD

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.

Lauren Horne, MSN, APRN, FNP-C

Lauren has 14 years of experience with patient care.  She started her healthcare career as a Certified Nursing Assistant at a level 1 trauma center in a large community hospital in the Chicago area.  She became a Registered Nurse in 2011 and continued working for the same hospital.  In 2014, she transitioned to outpatient patient care for a large community medical group in the orthopedic department.

Lauren received her Bachelor of Science in Nursing from Purdue in 2015 and her Master of Science in Nursing from Chamberlain University in 2018.  She is now a board-certified Family Nurse Practitioner.  Lauren is also certified as a fracture liaison service provider by the National Osteoporosis Foundation.

Lauren became interested in a more holistic approach to medicine after working with trauma and pain patient's for 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 Naperville NIVA Health office, she loves to garden and spend time with her husband, 2 young daughters and their German Shepherd.

Dr. James Joseph, DO

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, BS, CCCN, DC

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.

B. Danielle Milford, FNP-C

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.

Guerline Saintfleur, MSN, APRN, FNP-C

Guerline is a registered nurse practitioner who has devoted her life to ensuring others well-being.  She is dedicated to providing the highest quality of care with respect, excellence and innovation.  Guerline figured that out and has applied that principle of care to heart as she is in the field of patient-centered care.  NIVA Health is thrilled to have Guerline as a part of the team.

Mary K. Schupp, DNP, APRN, FNP-BC

Mary received her Doctor of Nursing Practice degree in 2014 and her Master of Science in Nursing/Family Nurse Practitioner in 2005, from the University of Southern Indiana, after practicing for over 25 years as a Registered Nurse.  She maintains her licensure through the State of Florida Department of Health as an Advanced Practice Registered Nurse, and her national certification as a Family Nurse Practitioner through the American Academy of Nurse Practitioners. 

Dr. Schupp has over 40 years of clinical experience in most fields including management, education, home health and 17 years of advanced practice including geriatrics, urology and palliative care.  Her areas of expertise include pain management and she prefers non-pharmacologic approaches to treatment, with the goal of improving quality of life.  She is an advocate of enabling patients to better help themselves to achieve their optimum health and live their best life.

Dr. Zack Stalnaker, BS, DC

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.

J.R. Turney, Patient Experience Manager

J.R.'s hometown is Marion, Indiana.  J.R. returned to Jacksonville in 2001 where he held leadership roles with AOL and Comcast, including but not limited to Customer Experience Manager position.  J.R. joined NIVA Health so that he could be engulfed in a world of quality healthcare for himself and his family and he is looking forward to working directly with patients and staff.  J.R. is currently engaged to his fiancée Angela who is a Medical Assistant and has two children; Reny and Kayla, as well as a Granddaughter Reyna.  J.R. is a father of two boys Joshua and Jackson and a Grandfather to Nolan and Islya.  He enjoys sporting events, traveling and being with family and friends.

Office Managers

Amber Morrison

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 Novi is thrilled to have Amber as part of the team.

Michelle Parker

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.

Lucy Razzano

Lucy is currently attending Arizona State University, studying for dual Bachelor's Degrees in Biology and Anthropology.  Growing up, she always wanted to become a medical examiner and perform autopsies for forensic cases like you see on TV shows like CSI and Forensic Files.  Her medical career path began in 2016, when she managed a growing physical therapy office.  There, she was able to help people heal from injury, surgeries and chronic pain.  After learning how much of an impact she can make for others, she now knows that her place in the world is helping people get back to living their best life!

In addition to her passion for helping people, she also has a passion for art and creativity.  She runs her own small business making resin art, hand soaps and wax melts, which she sells online as well as at craft shows around New Jersey with her mom.  Lucy lives with her boyfriend of 10+ years and their cat, Loki, who demands food and kisses at all times.  She loves the outdoors and tries to spend as much of her spare time as possible outside, whether it be long car rides to look at some nice scenery, hiking and exploring, or fishing alongside her dad and boyfriend.
Renee Shah

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.

Cynthia Taylor

Cynthia has been in the Healthcare field for 30+ years working in long term care as the Business Office Manager, Admissions/Marketing Director and Social Service Director.  She is a proud native Floridian, as her ancestors were one of the first Europeans to settle in all of America right here in St. Augustine.  She enjoys spending time by the pool or the beach with her husband and their 5 children.  Her hobbies include college football and NASCAR.

She is proud to be joining NIVA Health’s amazing team!

If you have any additional questions about the NIVA Health team of healthcare professionals, give us a call at Your Local NIVA Office, and we’ll be happy to help. You may also request an appointment right now.

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At NIVA Health, we use a variety of treatments and procedures including Acoustic Sound Wave Therapy, Erectile Dysfunction, Weight Loss, Cryotherapy, Therapy for Neuropathy, and IV Therapy.