Dan Loewensteiner, PhD, RDN, Nutritionist/Dietitian in Petaluma
Autism is a treatable disorder! There is hope that your child can be on the road to recovery! Much of the damage to our children created by our toxic environment and unhealthy foods can be reversed! Recent advances in the understanding of the genetics of autism, as well as the complex interplay of environmental factors and the underlying biochemical and physiological abnormalities in children on the spectrum, has refined our approach in using dietary and biomedical interventions to treat autism. If you are interested in exploring these approaches to heal your child on the autism spectrum, then I would like to talk with you!
I take a holistic approach in treating your child. Each child is unique, with unique dietary and nutritional needs. You can be assured that my recommendations, whether dietary, supplementation, healing of the gut or immune system, are all based on scientific and clinical evidence and are designed to best meet the needs of your child.
My treatment protocol proceeds in phases. These include: 1) addressing feeding issues and dietary quality; 2) "cleaning up" of diet and environment; 3) dietary restrictions ("special diets"); 4) introduction of appropriate dietary and nutritional supplements; 5) further refinement of diet; 6) promotion of gut health, 7) lab tests to determine additional supplementation.
Call or Email Dan Loewensteiner for a free phone consultation now - (707) 358-3041


  • Years in Practice: 15+ Years
  • School: University of California, Davis
  • Year Graduated: 1993


  • Avg Cost (per session): $60 - $200
  • Sliding Scale: Yes
Accepted Payment Methods: Cash, Check, Mastercard, Visa

Additional Credentials

  • Membership: CDR / 812551
  • Member Since: 2016
  • Degree: Purdue University / PhD
  • Year graduated: 1980


  • Autism
  • Gluten Free
  • ADHD
  • Food Sensitivity
  • Digestive Issues


  • Diet and Nutrition
  • Food Allergies
  • Pediatric Nutrition
  • Picky Eaters

Client Focus


  • Toddlers / Preschoolers (0 to 5)

Treatment Preferences


  • Assess feeding issues and practices
  • Consultant Dietitian
  • Dietary and biomedical intervention
  • Functional Medicine Nutritionist
  • Holistic Nutritionist
  • Integrative Nutritionist
  • Metabolic Testing
  • Multi-phase approach to treat underlying issues
  • Registered Dietitian

Treatment Techniques

  • Detox
  • Diet Therapy
  • Menu Planning
  • Nutrition Therapy
Last Modified: 10 Apr 2017
Dan Loewensteiner, PhD, RDN, Nutritionist/Dietitian in Petaluma

Dan Loewensteiner

Nutritionist/Dietitian, PhD, RDN