Meet The Team

Meet Our Founder

Caroline J. Cederquist, MD has taken a road few physicians have traveled. Beginning in 1991, she started her career in family practice. As it often happens with conventional medicine, she found herself prescribing round after round of medication, while knowing that if her patients could lose around 20-30 pounds that they wouldn’t need any medication at all.

With the desire to stop treating patients in a way that didn’t address the root of her patients’ problems, she came to a personal conclusion that conventional medicine did not provide all of the tools she needed to help her patients achieve optimum health.

Intent on discovering the underlying causes of her patients most common issues, like high cholesterol, diabetes, high blood pressure, and weight gain, she began to envision Cederquist Medical Wellness Center. She decided to move to Naples FL with her family, and committed to taking an entirely different approach to impact her patients’ health. She wanted an approach that could reduce medications, decrease a variety of risk factors, and improve health and quality of life long-term, by using food as medicine, and working with patients on an individual basis.

Dr. Cederquist founded Cederquist Medical Wellness Center in 1997, with the primary aim of treating patients by addressing the causes of their health issues. By providing the right dietary and lifestyle treatment program, she has helped patients normalize cholesterol levels without any medication. Patients who have tried everything to lose weight finally find the answers they need, and they began to lose weight after years of failure. Patients who have diabetes are able to reduce or eliminate their medications. Most importantly, patients have been able to improve their health and well-being in life-transforming ways.

Every patient is evaluated as an individual, and receives personalized treatment. Dr. Cederquist understands that what works for one person does not guarantee it will work for another. With a customized treatment program created specifically for each patient, Dr. Cederquist has helped thousands of people lose weight and achieve better health.

One of only about 250 doctors nationwide to have achieved board certification in bariatrics – the specialty of medical weight management, Dr. Cederquist has appeared as a weight-management expert in a variety of venues, including:

  • The Dr. Phil Show
  • The Ricki Lake Show
  • The Ananda Lewis Show
  • The Today Show, Locally televised NBC affiliate in Fort Myers, FL
  • Local Radio “The Skinny on Your Health”
  • Hundreds of Publications in regional and national magazines and newspapers


  • National Upjohn Achievement Award for “Outstanding Personal and Professional Qualities Deemed Most Valuable in a Physician
  • Chief resident at the Medical College of Virginia
  • Board of Trustees of the American Society of Bariatric Physicians
  • Member of the Institute for Functional Medicine
  • National Merit Scholar
  • University of Miami’s Honors Medical Education Program
  • Phi Beta Kappa
  • Alpha Omega Alpha – Officer (Medical Honors Society)

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Every patient is evaluated as an individual, and receives personalized treatment. Dr. Cederquist understands that what works for one person does not guarantee it will work for another. With a customized treatment program created specifically for each patient, Dr. Cederquist has helped thousands of people lose weight and achieve better health.

Meet Our Medical and Dietary Teams

Dr. Katherine Stam, D.O.

She is our Medical Director. She is an established and highly-skilled physician with over 20 years' experience in Family Medicine and Obesity Medicine. Prior to joining Cederquist Medical, she practiced in Michigan and New York. She believes that each patient is unique and takes the time to prepare individualized treatment plans to include lifestyle change, conventional medicine, functional medicine, and mindfullness practices. She is board certified in Family Medicine and Obesity Medicine. She is also a member of the Obesity Medical Association, the American Society of Bariatric Physicians, the American Academy of Family Physicians, the Institute of Functional Medicine, and the Integrative and Functional Nutritional Academy. When not in the office, she often spends time in nature, traveling, studying and practicing yoga, gardening, and appreciating art, music, and theater.

Nicole Hartwick, RDN

She is Registered Dietitian Nutritionist. She graduated Magna Cum Laude from the University of Vermont with a Bachelor of Science Degree in Nutrition & Food Science and Dietetics and completed her Dietetic Internship at Keene State College in New Hampshire. She is a member of the Academy of Nutrition and Dietetics and the Florida Academy of Nutrition and Dietetics. Prior to coming to Cederquist Medical over 10 years ago, she developed garden-based nutrition education programs for elementary kids to help promote a healthy lifestyle, teach basic cooking and gardening skills, and increase acceptance of new fruits and vegetables. Nicole's goal is to educate others about healthy eating habits that promote long-term weight management and to be a source of inspiration, guidance, encouragement and accountability in each person’s journey. When she's not helping patients at Cedequist Medical, she is a busy mother of two young children and enjoys being outdoors with her family and spending weekends at the beach. In her spare time, she likes dancing (salsa, hip hop, Zumba), music and concerts, traveling, camping, kayaking, and hiking.

Diana Vittorio, RDN

She is a Registered Dietitian Nutritionist. She graduated from Atlanta's Life Unversity as Valedictorian with a Bachelor of Science in Dietetics. Her comprehensive internship was completed at Naples Community Hospital and the Collier County WIC Program. She also received a Bachelor of Arts in Economics from Benedictine University in Chicago. Diana joined Cederquist Medical in 2017. Prior to that, she worked at Naples Community Hospital in the Von Arx Diabetes and Wellness Center. While in that position, she coached patients individually as well as in group settings on the nutritional side of weight loss, diabetes management, cardiovascular disease, kidney disease, cancer and pulmonary disease, and other various eating disorders. Additionally, she delivered lectures within the community on a plethora of nutritional trends. Along with helping people achieve their health, weight, and nutritional goals, she has a passion for animals, especially her two labradoodles. She is also an outdoor enthusiast, a life-long runner, an avid reader, and can be found most afternoons walking on Naples's beautiful beach.

Amanda Schultz, PA-C

Amanda Schultz, PA-C, is a Board Certified Physician Assistant. She's been practicing since 2002 when she moved to Naples from Ft Lauderdale. She received her Physician Assistant Degree and Masters in Public Health from Nova Southeastern University. Since graduating, Amanda has worked in the fields of Obstetrics, Gynecology and Urogynecology. She has always had a special interest in Nutrition and Wellness and is excited to specialize in this field at Cederquist Medical Wellness Center. When she is not working, she enjoys spending time with her husband and 2 children. She also enjoys working out, swimming and traveling.


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