Household Items Cause Heart Disease
Searching for products?


Office visits with Natural Heart Doctor

About Natural Heart Doctor Scottsdale

Schedule an appointment today with one of the cardiologists or other medical professionals at Natural Heart Doctor in Scottsdale, AZ at 6560 N. Scottsdale Rd. We specialize in natural ways to prevent, treat, and even reverse heart disease without Big Pharma medications or invasive procedures. We help people with heart disease feel better and live longer.

Call us today at (480) 535-6844.

Address and Info

6560 N Scottsdale Rd, Suite 125
Scottsdale, AZ 85253
United States

Mon. – Fri. 8:00am to 5:00pm

Phone: (480) 535-6844
Fax: (480) 535-6845


Get to know our team, learn about their backgrounds, and schedule your appointment today!

Cardiologist Dr. Jack Wolfson D.O.

Dr. Jack Wolfson D.O., FACC

James Kneller, M.D., Ph.D., FHRS

James Kneller, M.D., Ph.D., FHRS

Holistic Physician Dr. Lauren Lattanza NMD

Holistic Physician
Dr. Lauren Lattanza NMD

Dr. Tonia Rainier in Scottsdale at Natural Heart Doctor

Naturopathic Physician
Dr. Tonia Rainier, NMD

Dr. Keith Smigiel, FNP-C, DC, FIAMA

Anti-Aging Specialist
Dr. Keith Smigiel, FNP-C, DC, FIAMA

Dr. Greg Schneider

Dr. Greg Schneider, DC

Play Video about Welcome to Natural Heart Doctor Scottsdale
Scottsdale cardiologist Dr. Jack Wolfson has been featured by:
Dr. Axe Top 50 Medical Doctors
The Wall Street Journal
Time Magazine
The Washington Post
Natural Awakenings
Heart Graphic
Natural Heart Doctor is a team of professionals dedicated to supporting you on the path to YOUR 100 Year heart while reducing and eliminating the need for pharmaceuticals, unnecessary testing, and surgical procedures.


Office Visits at Natural Heart Doctor

Office Visits

Cardio Tests

Cardio Tests

Health Coaching

Health Coaching



IV Therapy

IV Therapy

Chiropractic​ Care


Read What Patients Are Saying

About Dr. Jack Wolfson DO, FACC

Dr. Wolfson Office Visit with Patient

Dr. Jack Wolfson is a board-certified cardiologist, Amazon best-selling author, husband, father, and the nation’s #1 Natural Heart Doctor.

For more than two decades, more than one million people have enjoyed the warmth, compassion, and transformational power of his natural heart health courses and events.

Dr. Wolfson is the founder of Natural Heart Doctor Scottsdale, his heart health practice in Arizona, and Natural Heart Doctor, an online resource center with natural health information. Doctors from across the globe reach out to Dr. Wolfson for training and education in holistic health practices.

He has been named one of America’s Top Functional Medicine Doctors and is a five-time winner of the Natural Choice Awards as a holistic M.D. Dr. Wolfson’s work has been covered by more than 100 media outlets, including NBC, CNN, and the Washington Post. His book “The Paleo Cardiologist: The Natural Way to Heart Health” was an Amazon #1 best-seller.

Dr. Wolfson and his wife Heather have four children and are committed to making the world a better place to live. They provide for those in need (including animals) and support natural health causes through their philanthropic efforts.

About Dr. James Kneller, M.D., Ph.D., FHRS

Dr. James Kneller, M.D., Ph.D., FHRS

Dr. James Kneller is one of the nation’s leading heart rhythm specialists. Dr. Kneller is certified by the American Board of Internal Medicine (ABIM) in Clinical Cardiac Electrophysiology, Cardiovascular Disease, and Internal Medicine.

As a Fellow of the Heart Rhythm Society (FHRS) and Certified Cardiac Device Specialist (CCDS), Kneller provides comprehensive patient care, combining best medical practice with invasive procedures using state-of-the-art technologies to treat heart rhythm disorders.

Beyond guideline-directed therapies, Kneller is passionate about optimized personal health. With a deep interest in complimentary alternative medicine (CAM), he strives to reduce the need for pharmaceuticals, invasive procedures, and exposure to harmful radiation. With Natural Heart Doctor, he strives to help each and every client to Live Well, Eat Well, and Think Well to attain their 100-year heart!

About Dr. Lauren Lattanza NMD, FACC

Dr. Lattanza Office Visit with Patient

As a Naturopathic Physician, I am trained to treat the whole person and get to the root cause of disease.

I went to Arizona State University where I graduated with a bachelor’s degree in psychology with a depth in physiology and minor in Spanish. After my undergraduate degree I was working on prerequisite classes towards medical school, which is when I came to learn that my values identified best with the principles of naturopathic medicine. I knew that I wanted to help patients identify the causes of disease and be able to offer treatments which would improve their health rather than simply treating symptoms.

I dedicated the next 4 years to the Southwest College of Naturopathic Medicine in Tempe, Arizona where I attained my Doctorate of Naturopathic Medicine. I served as Class President all 4 years, Board of Trustees – Student Trustee, spoke as the Club President for our branch of Toastmasters, and was voted by my peers and attending physicians to earn the Outstanding Leadership Award for the Class of 2020. Throughout medical school I took it upon myself to work alongside MDs, DOs, chiropractors, and functional medicine practitioners in addition to naturopathic physicians.

As a Spanish speaking student, I was able to volunteer with community clinics around Phoenix and provide free healthcare to low-income families. Due to this combined exposure, I came to find my passion in treating cardiometabolic and digestive disorders that are all too common, yet largely preventable. I took the opportunity to learn the broad spectrum of healthcare so I can ensure that I am able to provide my patients with the best options.

About Dr. Tonia Rainier, NMD

Dr. Tonia Rainier NMD, MS

Tonia Rainier, NMD is a is an Arizona board-certified Naturopathic Physician. She obtained her doctorate from Sonoran University of Health Sciences in Tempe, AZ, and has pursued advanced training in Functional Medicine (, including completion of the Institute for Functional Medicine’s “Applying Functional Medicine in Clinical Practice” (IFM-AFMCP) program, as well as the “Hormone Advanced practice module” (APM) and the “Gastro-Intestinal APM”. With a solid foundation in Naturopathic Medicine and specialized expertise in Functional Medicine, Tonia provides a distinct approach to patient care. Her focus is on identifying the cause of health issues through root-cause medicine, herbal medicine, and nutritional therapy.

In addition to her naturopathic qualifications, Tonia holds a master’s degree in Exercise Science and a bachelor’s degree in Wellness Promotion. She has more than 20 years of experience as an ACSM-certified Exercise Physiologist.

Outside of her professional life, Tonia enjoys hiking, mountain biking, and exploring paleo cooking.

About Dr. Keith Smigiel NP, DC

Dr. Keith Smigiel

Dr. Keith Smigiel is a regenerative medicine physician and pain management specialist. He takes an integrative approach to medicine, focusing on customized solutions tailored to individual needs. Using advanced, non-surgical treatments, Dr. Smigiel stimulates your body’s ability to naturally heal itself.

Dr. Smigiel helps people suffering from conditions such as chronic pain and erectile dysfunction, to hair loss and weight gain. Combining treatments such as PRP Therapy, Ozone, Neural Prolotherapy, and IV Infusions with functional rehabilitation, he helps you look and feel better.

He heals the body, instead of just treating the symptoms!

With his professional qualifications as a certified family nurse practitioner, a doctor of chiropractic, and a fellow of the International Academy of Medical Acupuncture, Dr. Smigiel offers patients comprehensive care from a broad perspective of conventional and alternative medicine. He also has extensive experience in functional rehabilitation and chronic pain management.

Dr. Smigiel is married to Angela and has two children, Sophia and Larz. When he’s not busy helping patients, he enjoys hiking, mountain biking, motocross, and boating.

About Dr. Greg Schneider

Dr. Greg Schneider

My name is Dr. Greg Schneider and I am a chiropractor. I first learned of chiropractic when I developed a neck injury while working out when I was 25 years old. I had never seen a chiropractor before, but knew that my neck wasn’t going to fix itself. So I asked a few friends for some recommendations and settled on an office to visit. The first treatment was a life changing experience. Not only was my neck pain gone, as well as the tingling into left hand, but I had more range of motion in my neck, upper back, and lower back. As someone who is very active and into athletics, this was a game changer. In addition to the adjustments, we worked on implementing specific exercises throughout my treatment to improve movement function as well. With the adjustments and the consistent work on the exercises I was moving better, performing better, and doing all my activities without pain. Had I known that chiropractic could drastically improve my life and ability to do the things I love, I would’ve started so much earlier! This experience, showed me that I was meant to be a chiropractor. I signed up for classes at Logan University less than a year later.

In my time at Logan, I learned that chiropractic could have many benefits outside of just improving range of motion and reducing pain. It can reduce blood pressure and heart rate, it can help us sleep better, and even improve discretion! In addition to our core curriculum, I also attended many outside seminars. I learned about rehab exercises, dry needling, and breathing techniques. All which are designed to help us get the most out of our bodies and continue to move well into our later years.

I worked with D1 athletes at the University of Memphis, under Dr. Jude Miller to finish my schooling and graduated in 2021. For the last two years since graduating, I went on to work part time at The Joint Chiropractic, as well as pursuing coaching and working with members as a chiropractor at CrossFit Memphis.

I am very excited to be working at NHD, and join a group of people incredibly passionate about what they do, while trying to make positive change in their community and the world. I hope to be a valuable resource for each patient I see, and fulfill my role as a chiropractor in the “Live Well” portion of our NHD model.

Office Visits

Schedule an office visit with one of our cardiologists, holistic physicians, chiropractor, or health coaches.

Call (480) 535-6844 for details and scheduling.

Cardio Tests

We use the most advanced testing in the world to assess heart health and to identify the root cause of your health issues.

Call (480) 535-6844 for details and scheduling.

Health Coaching

Our health coaches use evidence based skillful conversation, clinical interventions, and strategies to engage you actively and safely in health behavior changes.

Call (480) 535-6844 for details and scheduling.


Stimulate your body’s natural healing abilities and promote physical and emotional well-being with acupuncture at Natural Heart Doctor.

Call (480) 535-6844 for details and scheduling.

IV Therapy

We use specially formulated natural vitamins and minerals that are injected into a vein to prevent or treat dehydration. Ideal for people in Arizona.

Call (480) 535-6844 for details and scheduling.


Our chiropractor is an expert at adjustments and holistic chiropractic care and works closely in conjunction with the other health care experts at Natural Heart Doctor.

Call (480) 535-6844 for details and scheduling.

Frequently Asked Questions

I’d like to receive an online second opinion from Natural Heart Doctor. What do I do next?

You can initiate a second opinion online through our website at any time. To begin, select the team member you’d like to speak with and open an account.

Click here for cardiologist Dr. Jack Wolfson.

Naturopathic Medical Doctor Dr. Lauren Lattanza. Get details.

Naturopathic Medical Doctor Dr. Tonia Rainier. Get details.

Click here for  Natural Heart Doctor Health Coach.

Alternatively, you can email A member of our care team will help guide you through the process of starting a second opinion.

What is the cost of a Natural Heart Doctor Online Second Opinion?

The cost for most second opinions varies by team member. This fee includes information collection, a phone or video consultation, a second opinion from a Natural Heart Doctor specialist and guidance throughout the process from your personal Care Team at Natural Heart Doctor.

Cardiologist Dr. Jack Wolfson’s Second Opinion Fee is $1500.

Holistic Physician’s Dr. Lauren Lattanza’s Second Opinion Fee is $250.

Naturopathic Physician Dr. Tonia Rainier’s Second Opinion Fee is $250.

Note: We apply the Online Second Opinion Call fee as a credit to any future consultations with Natural Heart Doctor, should you choose them.

Will my insurance cover the cost of a Natural Heart Doctor Online Second Opinion?

Most likely, no. Most health plans do not cover online second opinions or consultations. You are responsible for the cost of our second opinion. Natural Heart Doctor cannot file a claim with your insurance carrier, nor can we provide a procedure (CPT) code for this service.

What is the timeline to receive an online second opinion?

We do our best to schedule your second opinion as quickly as possible. Typically, it takes 5 to 7 business days after your information has been collected to receive your phone or video online second opinion.

What information do you need in advance of our call?

Our office will send you a short questionnaire to complete and return. We DO NOT need your complete medical records.

How many questions can I ask the expert during our call?

You may ask a maximum of five questions. This is to ensure that the expert has sufficient time to devote to each question. All questions must be finalized before your online meeting.

What should I expect to receive once my second opinion is complete?

You will receive a summary of our discussion along with our second opinion. The second opinion will be in written form. After you have reviewed the second opinion, a Natural Heart Doctor clinician will follow up with you by phone to address general medical questions about the information provided in the second opinion.

What if I have follow-up questions for the expert after I have reviewed my second opinion?

If you have a clarifying question about an expert’s response to one of the questions in your second opinion, and the Natural Heart Doctor clinician is unable to address it, then you may request a follow up session for an additional fee. 

Is my medical and payment information secure?

Natural Heart Doctor is strongly committed to protecting the privacy and security of all our patients. Our website meets all federal requirements for protecting personal health information under the Health Insurance Portability and Accountability Act (HIPAA). All financial transactions are processed by Natural Heart Doctor securely using industry standard payment processing tools.

I would rather visit Natural Heart Doctor for an in-person appointment. What should I do next?

If you would prefer an in-person appointment at Natural Heart Doctor instead of an online second opinion, please call (480) 535-6844 for details and scheduling.

Can I schedule a follow up appointment with the specialist who provided my online second opinion?

Yes, we’re happy to help you on an extended basis. Our clinician can discuss options with you when presenting our second opinion summary.