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    The Well Team

    Updated at March 5th, 2024

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    DisclaimerThis material is for educational purposes only. You, the reader, assume full responsibility for how you choose to use it. It is not intended to provide medical advice, diagnosis or treatment, nor does it replace the advice or counsel of a doctor or health care professional. Reference to a specific commercial product or service does not imply endorsement or recommendation of that product or service by CPCMG.


         ▷ WELL Homepage

         ▷ Meet the WELL Team

         ▷ Nutrition Resources

         ▷ The Curriculum for Current Patients

         ▷ WELL Clinic Programs



        Natalie Muth, MD, MPH, RDN, FAAP

    Dr. Natalie Muth is the founder and director of the CPCMG WELL Clinic. She is a board-certified pediatrician and registered dietitian who practices general pediatrics at the CPCMG La Costa office in addition to the WELL clinic virtual appointments. She is a spokesperson for the American Academy of Pediatrics and a member of the Parents magazine Board of Advisors. She is the author of several books including the Family Fit Plan:  A 30-Day Wellness Transformation and the Picky Eater Project: 6 Weeks to Happier, Healthier Family Mealtimes. She loves all kinds of foods and experiences and particularly enjoys going for long walks and spending time with her husband and 2 kids.



       Mary Tanaka, MD, MS, FAAP

    Dr. Mary Saph Tanaka, MD, MS, FAAP is a pediatrician at Children’s Primary Medical Group in Carlsbad, California. In addition to her pediatric practice, Dr. Tanaka helps families improve their health and wellness in the Children’s Primary Medical Group W.E.L.L. Clinic. With her medical and nutrition expertise combined with her passion for cooking, Dr. Tanaka serves as the W.E.L.L Clinic’s culinary medicine expert. To help families learn how to prepare delicious and healthy meals, she created a virtual teaching kitchen curriculum where she shares cooking techniques and demonstrates recipes.

    Dr. Tanaka has developed multiple kid-friendly recipes for numerous publications and loves testing out new dishes with her two sons and husband.


         Nicole Kastner, CPNP

    Nicole Kastner is a Board-Certified Pediatric Nurse Practitioner specializing in health promotion and wellness with newborns through adolescents. Her background also includes certifications as a massage therapist, yoga instructor, and mindfulness educator for children. She enjoys spending time with her family outdoors at the beach, camping, and hiking. She is a graduate of the University of San Diego.






    WELL Clinic Health Coach

    WELL Clinic Health Coaches are here to support you between your visits with your clinician.


         Katie Diaz, BS, Senior Health Educator


    Katie Diaz, BS, ACE is a certified Health Coach/ Personal Trainer for the WELL Clinic and bilingual in Spanish. She has a Bachelors of Science in Kinesiology emphasis in Nutrition Sciences from Cal State University San Marcos. She helps families improve their health and wellness while supporting the clinicians within the WELL Clinic team.  She enjoys exploring new places and spending time with her husband and three children.