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Meet the team

Dr. Katie Williams

Naturopathic Doctor

Dr. Katie Williams is deeply passionate about helping patients feel their best—both inside and out—by optimizing their health through a personalized, holistic approach.

Dr. Katie utilizes a variety of therapeutic modalities including nutraceuticals, lifestyle and nutritional modifications, IV therapy, HRT, and peptide recommendations. Her care is tailored to each individual, aiming to restore the body’s natural balance and address the root cause of symptoms. With special interests in functional medicine, hormone optimization, weight loss, and longevity, Dr. Katie is dedicated to helping her patients achieve lasting results by supporting whole-body wellness.

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619-612-0672

Over 8,000 patients treated

Patient testimonials

Discover how our patients achieved success with our support. Explore their inspiring stories to see the potential outcomes we can help you achieve.

“I’ve lost 31 pounds, and my sleep is fantastic!”

Wayne’s Story

Love the staff and all the amazing encouragement and most definitely the results of the weight loss medication!

Kim W.

The Doctors here are very knowledgeable and friendly. I have been comming here for 5 months and have had such amazing weight loss! I highly recommend I Thrive MD.

Alicia M.

They are very good at explaining & guiding me in the direction I should go with procedures without “selling”, which I super appreciate.

Jennifer M.

I had my first visit at IThrive Encinitas and I am happy I did! The facility was well maintained, clean and bright and as soon as I arrived I was greeted by 2 very polite and professional Receptionists.

Sheena H.

The Dr was very thorough and patiently answered all my questions. My first visit was awesome!

Marina C.

I couldn’t be more thankful for iThriveMD! Since I started my journey mid October I’ve lost 25 pounds and feel like a new person! I have way more energy and don’t feel uncomfortable in my own skin anymore.

Angelica H.

Their new wellness center in Mission Valley is awesome! So calming and comfortable from the moment you walk in.

Holly G.

I have been coming to iThriveMD ever since they opened up and I am obsessed! This is like my new wellness place that I enjoy coming to when I am feeling down and need to be lifted up!

Ari P.

I’ve been on it for 3 months and lost35 pounds. Fortunately I had no negative side effects. I feel great. Everyone here was very polite and very welcoming.

Dr. Charles

Great location! Exceptional staff! I truly feel taken care of here! 10/10 recommend.

Gloria H.

About us

Your partner in living better, longer

iThriveMD is a medical clinic focused on longevity, helping patients live better and longer. We utilize advanced diagnostics, preventive medicine, and personalized protocols designed to tackle the leading causes of preventable disease.

Learn more about us

619-612-0672

Meet our care team

Get to know the longevity experts behind your care. Each provider brings advanced training in prevention, biomarkers, and personalized protocols—so your plan fits your life.