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Learn how people around the world benefit from the health care and advice provided by Natural Heart Doctor.

Patient Testimonials

High Blood Pressure

Down from average 155/105 BP. NO MEDS. Had appointment with Natural Heart Doctor in 2022 and had all my test done he recommended. After test results I Followed Drs. plan for one year. Over the year I have Watched my BP go down to these normal levels, lost 40lbs and feel best I’ve felt in years. This week I am taking my blood test and others to see how they have corrected. I’m a believer !! – Dean Kuhn

Mark D.

Atrial Fibrillation

“When I found Dr. Jack Wolfson, I was really struggling, physically and emotionally. My main issue was atrial fibrillation. The symptoms bothered me and the local cardiologist was only offering drugs or an ablation. I was very frustrated. After meeting with Dr. Jack, I had a new confidence that I could conquer AFIB and feel great again. Here we are 4 years later and I couldn’t be happier. My health is great. My energy is great and I am actually getting remarried this December. Oh….I take zero medications. Thank you Dr. Wolfson and Natural Heart Doctor. ” – Mark D.

Brenda K.

High Blood Pressure

“When I started with Natural Heart Doctor, I was way overweight and on 3 blood pressure pills. I had tried EVERY diet, but nothing worked. My mom was a patient of Dr. Wolfson so I thought I would give his office a try. It was the greatest healthcare decision of my life. With the method of Eat Well, Live Well, Think Well, I lost the weight AND was able to stop the 3 drugs. I am on my way to the 100 Year Heart.” – Brenda K. 

Michelle S.

Overweight, Fatigue

“My husband came to see Dr. Wolfson for his high blood pressure and coronary calcification. I was just there for support.  But I was blown away by the conversation. Everything my husband did, I did. The weight came off easily and my energy returned. My digestion normalized after years of stomach upset. We were concerned about the investment working with Natural Heart Doctor, but it was money well spent. We drive for a living and are now able to make more money because our health has improved so much. ” – Michelle S.

Marion H.

Cardiomyopathy, Diabetes

“I came to see Dr. Wolfson for cardiac clearance before a scheduled gastric bypass surgery. The choice for gastric bypass was not an easy one, but I would do anything to be around for my grandkids. Dr. Wolfson saw me and said I was at high risk, but could go ahead with the surgery. But then he said something no other doctor has ever said. ‘You can beat this naturally.’ Well, it took me 3 years, but I did it. I cancelled the surgery and followed his advice of Eat Well, Live Well, Think Well. That was 300 pounds ago!” – Marion H. 

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Testimonials from our online learning courses

Verified Buyer Testimonial of the 100 Year Heart Challenge


Thank you so much for everything! Appreciate your amazing support and super quick responses. I feel like you have been holding our hands but now we’re ready to cross the street on our own! Through this I rediscovered my love of intermittent fasting, which I fell off for awhile, so looking forward to following that plan with a few longer fasts thrown in, and a keto/paleo meal plan. And lost 12 pounds and a few inches!! Oh and also learned how to manage IF/fasting with salt and minerals…GAME CHANGER!!

Phil G. Verified Patient

Profound Impact

When I came under the care of Dr Wolfson, I was overweight, my cholesterol numbers were high, and I was being heavily medicated for high blood pressure, with only moderate results. Dr. Wolfson’s innovative approach to medicine, using a therapy of good nutrition combined with using supplements aimed at targeting the cause, rather than simply using medications to treat the symptoms, has had a profound impact on my health. In the three years I have been under his care, I have watched my weight drop from 220 to 145 pounds (from a 38″ to a 28″ waist), my cholesterol numbers are much lower, and now, taking only two low dosage pills each day, instead of the six pills I had been taking every day for years, my blood pressure has stabilized to lower than average numbers.  I look better and feel better than I have in years and I am now almost virtually medication free. Thank you Dr. Wolfson, for the changes I have seen in my health and in my nutritional way of life.

Truly Fortunate

Suffice to say that I am an ardent convert to the “Eat Well, Think Well, Live Well” philosophy. I just wish that more people were aware of this approach to health. I’ve told as many as I can but it’s just a drop in the bucket I realize. I think it’s disgraceful that people are indoctrinated into thinking that the allopathic model is the only one to follow, as well as it’s the only one that insurers will cover. 

In closing I just want to thank you and all of the rest of the dedicated people I’ve been fortunate enough to deal with at Natural Heart Doctor. I consider myself truly fortunate that I found you all.

Verified Buyer Testimonial of the 100 Year Heart Challenge


Wish I could express just how amazing I’m feeling. From mental clarity to physical energy… plus mood and feeling calm, I am going to MISS this group so much; checking in every morning, the coaches and lessons and support, and the members whom I’m getting familiar with I’ve learned my fasting from many sources over the years, and have fasted with other groups but with no real “direction”. This will forever be my fasting “home “… because it’s just… everything! It works, it’s safe…Best investment I may have ever made for myself. 

Dr. Mike Reid Testimonial

Highly Recommend

From blood panel to exam and consultation, Dr. Jack provided a proven, scientific and real-world solutions for my 100 year heart. In a world where your medical cardiologist will only provides pharmaceutical solutions, Dr. Jack Wolfson takes a more realistic deep dive into your lifestyle, nutritional, environment and cellular physiology. For those who want an alternative to Big Pharma, I highly recommend that you consult with Dr. Jack Wolfson and his professional team for real health and longevity. Dr. Mike Reid

Verified Buyer Testimonial of the 100 Year Heart Challenge


I lowered my blood sugar, but the game changers are Mg/Kick Start my heart and use of salt which helped chest pressure/tightness due to leaking heart valves. Losing 4 lbs. is a Bonus. The advice via presentations along with the diet/supplements greatly impacted my health. Thank you to the Coaches esp. Ali and Lara and for answering my questions. Special shout out to Lara for email support too. I am so grateful to be part of this NHD Challenge.

Verified Buyer Testimonial of the 100 Year Heart Challenge


I have not had better numbers in almost 5 years that I have been tracking. Weight down, blood sugar down, ketones up. I did a lot of coaching prior to this to truly understand what works best for me and this challenge allowed me to put it all together to make a huge difference.   The absolute key for me is to continue most of this and not go back to what I was doing prior to the 100 Year Heart Challenge.  Thank you Dr. Wolfson and staff and all of you on this journey.

Verified Buyer Testimonial of the 100 Year Heart Challenge


First time for this challenge. I have been doing IF for two years with occasional 72 hour fast (maybe 4 per year). Have really enjoyed this challenge and being in this group. Have learned soooo much! Would definitely join this NHD 100 Year Heart challenge again. For some reason doing these longer fasts are harder when I don’t have the group to support me. I guess I need to cling more to my why/mission statement.

Verified Buyer Testimonial of the 100 Year Heart Challenge


This challenge has been relatively easy for me. Was it a challenge, YES! But I set my mind to it and powered through with the coaches guidance and everyone’s support.
It’s a great lifestyle. Never feel hungry or a need to snack. A total reboot for 2023!

Verified Buyer Testimonial of the 100 Year Heart Challenge

it"s been amazing

These last 21 days have been amazing. Having you guide us on what and when to eat has been so helpful. Thank you!

Verified Buyer Testimonial of the 100 Year Heart Challenge


Absolutely agree! This challenge has helped me understand what to tweak and gave me a much more comprehensive understanding of how to approach the fast. Thank you, coaches!!

Verified Buyer Testimonial of the 100 Year Heart Challenge


I completely recommend coaching. It has been helpful and supportive. It is wonderful to have a team behind you. Dr. Wolfson and the whole practice are outstanding.

Verified Buyer Testimonial of the 100 Year Heart Challenge


I cannot believe how great this second fast has been! I am not hungry, have slept well, have lots of energy, and a great attitude!!!  I will reiterate what others have said … the information provided by our Coaches, Doctors and all of you participants has been amazing!!!! Thank you all!! Can’t wait for the next Challenge!!!

Verified Buyer Testimonial of the 100 Year Heart Challenge


I just want to say again how awesome this challenge is. You all have done an amazing job. The past two years I wanted to join but was afraid of the cooking. The cooking was hard, but so worth it. Keep up the great work. The prizes, that weren’t expected, are so amazing. It is a joy to watch people in the group win. I wouldn’t change a thing with the program.

Verified Buyer Testimonial of the 100 Year Heart Challenge


I do have to say, this Heart Challenge is more than I expected. You coaches have done a fabulous job. The Q and A’s are jam packed with great info and the presentations are really good. I am grateful that you and the other coaches are really focusing on making things practical and doable, but doing it safely. I am enjoying the interaction with the other challengers too. So thank you.

Verified Buyer Testimonial of the 100 Year Heart Challenge


Thank you all again from the depth of my soul. You have truly changed my life for the better! This program was life changing for me. Thank you again to all of you coaches. You have a gift in guiding others towards better health. Your support and interaction have made all the difference with this program!

Gerald F. Verified Buyer

No More AFIB

I’ve been using your Vessel Support for I think a year now. I had AFib every night and now, I never have AFib. Thank you.

Verified Buyer Testimonial of the 100 Year Heart Challenge

my cup overflows

Thank you coaches, and everybody, for all the information, advice, suggestions, ideas and encouragement. My cup overflows

Verified Buyer Testimonial of the High Blood Pressure Course

Useful Information

Thanks for the informative course on high blood pressure. picked up some useful information to help keep it down . Confirmation on some things that I’ve been wondering about.

Verified Buyer Testimonial of the 100 Year Heart Challenge


Hi Team, made it through the 21 day program, I feel great , inflammation is lower, dropped 12.2 lbs, metabolic age went from 62-60 I’m curious to see my blood work .
Thank you

NHD patient Tani K.

highly recommend

At 75 I had the widowmaker heart attack. Under Dr. Wolfson’s care I have been able to restore my heart health and return to my job as an executive in a non-profit. Wolfson is passionate about educating people about how to have a healthy heart. When most cardiologists want to give you meds he takes a holistic approach with complete blood analysis, diet and environmental issues that affect our health. He designed a nutritional program to heal my overall health. I highly recommend him. 

Online Testimonials

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. 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. 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.


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.

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.


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.

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.

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.

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.

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 health@naturalheartdoctor.com. 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.