Kelly McGuffin, MS, RDN

Registered Dietitian for Weight Loss & Nutrition Counseling

Expert Nutrition & Weight Management Support

Kelly McGuffin, MS, RDN, LDN, is a Registered Dietitian and Certified Health Coach at Nova Physician Wellness Center, helping patients achieve lasting results through personalized nutrition and lifestyle guidance.


With over 20 years of experience, she provides evidence-based nutrition counseling to support weight loss, improve health, and manage chronic conditions.

About Kelly McGuffin, MS, RDN, LDN

Kelly McGuffin is an experienced registered dietitian with a strong background in both clinical and outpatient nutrition care.


She earned her bachelor’s degree in dietetics with a minor in public health from James Madison University, graduating Magna Cum Laude. She completed her dietetic internship through the University of Virginia and went on to earn her master’s degree in nutrition from Central Michigan University, graduating Summa Cum Laude.



Her advanced education and extensive experience allow her to provide high-quality, individualized nutrition care to a wide range of patients.

Comprehensive Experience in Nutrition & Chronic Disease Management

Kelly has worked with both adult and pediatric populations across a variety of clinical settings, helping patients manage complex health conditions through nutrition.


Her areas of expertise include:


  • Weight management and obesity
  • Diabetes and blood sugar control
  • High cholesterol and hypertension
  • Heart disease
  • Gastrointestinal conditions, including IBS (low FODMAP diet)
  • Celiac disease
  • Kidney and pulmonary disease
  • Bariatric surgery support
  • Eating disorders and substance-related health concerns


Her diverse experience allows her to create highly personalized nutrition plans tailored to each patient’s needs.

A Personalized, Nutrition-Focused Approach

Kelly is passionate about helping patients meet their nutritional needs and achieve their health goals through practical, sustainable strategies.



Her approach includes:

Individualized nutrition counseling


Evidence-based dietary planning


Behavior and lifestyle support


Education to promote long-term success

As a Certified Health Coach, she works closely with patients to build realistic habits that support lasting change.

Advanced Nutrition Services

Kelly provides specialized nutrition support, including:

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Medical nutrition therapy


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Low FODMAP diet guidance for IBS


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Nutrition support for chronic disease management


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Bariatric and post-surgical nutrition care


Locations Where Kelly Practices

Our Registered Dietitians work closely with your provider to support your personalized treatment plan. Nutrition counseling visits are coordinated through your medical provider as part of your ongoing care and long-term success.

Lansdowne, VA


Sterling/Stone Springs, VA


Insurance Plans Accepted

Kelly McGuffin accepts most major insurance providers, including Medicare.


Patients with PPO plans may also be eligible for out-of-network benefits. Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA) can often be used toward nutrition and wellness services.


For specific insurance questions, please contact the office directly.

 For specific questions about your coverage, please contact our office at 703-865-6490.

Why Patients Choose Kelly McGuffin

Patients choose Kelly for her:


  • Registered Dietitian credentials (RDN, LDN)
  • Over 20 years of clinical experience
  • Expertise across a wide range of medical conditions
  • Evidence-based, personalized nutrition plans
  • Supportive and goal-oriented coaching approach

Outside of the Office

Kelly enjoys spending time with her husband and two daughters. She loves traveling, walking, reading, and family movie nights. She is a Peloton enthusiast who enjoys staying active and motivated through the Power Zone Pack (PZP) Challenges.

 Frequently Asked Questions About Kelly McGuffin

  • What does a registered dietitian do for weight loss?

    A registered dietitian provides personalized nutrition plans and guidance to help patients lose weight safely and maintain long-term results.

  • Can Kelly McGuffin help with medical conditions like diabetes or IBS?

    Yes, she has extensive experience managing a wide range of conditions through medical nutrition therapy.

  • What is a low FODMAP diet?

    A low FODMAP diet is a specialized nutrition plan used to help manage symptoms of irritable bowel syndrome (IBS).

  • Do I need a referral to see a dietitian?

    In most cases, no referral is required, but it may depend on your insurance plan.

  • Is nutrition counseling personalized?

    Yes, all nutrition plans are tailored to each patient’s individual health needs, goals, and lifestyle.

Work with a Nutrition Expert to Reach Your Goals

Get personalized guidance and support to improve your health and achieve lasting results.