Simplified access to a network of dietitians

Lower Cost

40% less than in-person


Fits your busy schedule

Simplified Accessibility

Book online or by phone

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Our Service

Mobile Appointments

45-minute phone appointment and follow up report

Save time and money of a traditional in-person appointment. Experience unprecedented convenience and accessibility by booking a mobile appointment.

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24-Hour Mobile Access

24-hour text and talk access to a dietitian

Receive immediate support when and where you are making important food and health decisions. A dietitian is always just a click of a button away!

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Our Philosophy

Our belief is that what we use to nourish our bodies profoundly affects our everyday lives – today and in years to come. We are here to help others experience the joy of a healthy life. It’s our goal to empower each of our clients to eat well and to live well. As a team of licensed and registered dietitians, we are here to support our clients every step of the way to a balanced, holistic, and healthy way of eating.

- The On Demand Dietitian Team


Why On Demand Dietitian

Considering one’s diet is the greatest controllable determinant of one’s health, dietitians are capable of assisting with a myriad of health issues. On Demand Dietitian assists with:

  • Managing diabetes
  • Reducing cholesterol
  • Controlling blood pressure
  • Coping with a new diagnosis
  • Losing or gaining weight
  • Increasing energy and reducing fatigue
  • Improving mood and mental health
  • Understanding how diet affects chronic diseases
  • Implementing therapy for eating disorders
  • Training for athletic or sporting events
  • Controlling allergies and intolerances
  • And many more health conditions


Simply the best nutrition counseling experience I’ve ever had…affordable yet high quality.
Catherine L
Santa Rosa, CA
I learned creative yet practical ways to cope with my diabetes.
Stacy R
Tampa, FL
My Mobile Appointment was the first time I ever spoke to a dietitian since I am always busy from 9-5. I am so thankful On Demand Dietitian fits my schedule.
Tony F
Naperville, IL

Our Dietitians

Brett Curtiss RD
Brett Curtiss RD
Brett educates clients about general nutrition and wellness and specializes in diabetes management and renal nutrition. Brett loves to make homemade garlic hummus and run along Chicago’s lakefront.
Jocelyn Lutkus RD, CSO, LDN
Jocelyn Lutkus RD, CSO, LDN
Jocelyn enjoys assisting clients with weight management and specializes in oncology nutrition. She loves to cook healthy, and her current favorite recipe is cauliflower mash.
Mary Ann Shannon RD
Mary Ann Shannon RD
Mary Ann empowers clients during their weight management and weight loss journey. She specializes in food sensitivities and diabetes education.
Alyson Slaughter RD
Alyson Slaughter RD
Alyson specializes in assisting clients transition to a real-food based and gluten-free lifestyle. Alyson loves traveling, chocolate, and Nepali momos
Tisa N. Ross RD, LDN
Tisa N. Ross RD, LDN
Tisa specializes in renal nutrition, weight loss, and cardiovascular disease. In her spare time, she volunteers for inner-city non-for-profit organizations teaching teenagers the concepts of nutrition and healthy eating.
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Our Team

Sidonia Rose Swarm
Sidonia Rose SwarmCEO / Founder
Jenny Westerkamp RD
Jenny Westerkamp RDDirector of Business Development
Elizabeth Zinsmeister RD, LDN
Elizabeth Zinsmeister RD, LDNDirector of Nutrition and Recruitment
Kristen Alfonsi MS, RD
Kristen Alfonsi MS, RDDirector of Marketing
Sean Crowe
Sean CroweProduct and Tech Guy
Thomas Gorczynski
Thomas GorczynskiCreatives and Tech Guy