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Mary Friesz
out of 5
  • Nutrition Services
  • Diabetes Self-Management Education
  • Wellness and Complementary Medicine
Accepting new patients


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67 Walnut Avenue Nutrition Services

67 Walnut Avenue
Clark, NJ 07066
United States

Clinical Expertise

  • Celiac disease
  • Colitis
  • Constipation
  • Crohn's disease
  • Dehydration
  • Diabetes management
  • Diet
  • Digestive problems
  • Food allergies
  • Gastrointestinal problems
  • Gestational diabetes
  • Headache
  • Heart Disease
  • Hemoglobin A1c
  • High Cholesterol
  • High blood pressure
  • High blood sugar management
  • Hypertension
  • Impaired fasting glucose
  • Impaired glucose tolerance
  • Indigestion
  • Obesity
  • Osteoarthritis
  • Overweight
  • Prediabetes
  • Weight Management
  • Weight loss
  • adolescent diabetes
  • adult onset diabetes
  • albuminuria
  • bariatric surgery
  • blood glucose test
  • blood pressure
  • blood sugar level
  • bulimia
  • childhood diabetes
  • chronic renal failure
  • compulsive overeating
  • diabetes mellitus
  • diet plans
  • eating disorders
  • gastrointestinal disorder
  • glucose tolerance test
  • high blood sugar
  • insulin resistance
  • ketone
  • lose weight
  • nutrition
  • reduce risk of disease
  • type 1
  • type 2
  • weight loss goals
  • weight loss plan

Accepted Insurances

Always check with your health insurance carrier before scheduling any type of service. You can learn the details of your individual health insurance plan, including the amount of your copay, deductible, and coinsurance by visiting your health insurance company's website or by calling their customer service department. Click here to review our list of accepted insurance plans.

  • Aetna Medicare PrimeAetna Signature Administrators
  • HMO
  • Meritain
  • Open Access
  • POS
  • AHS - SMG is Tier 1
  • APCN - Aetna Premier Choice Network
  • Axcel Choice POS II
  • Axcel Open Access
  • Choice POS II
  • EPO Select
  • HNO - Health Network Option
  • Liberty - SMG is Tier 1
  • Medicare Advantage - HMO, PPO
  • Choice
  • PPO
  • Signature PPO
  • Assure Premier Plus
  • EPO
  • PPO
  • HMO
  • POS
  • Open Access
  • Open Access Plus
  • Local Value
  • Tiered Advantage
  • Advantage
  • HMO Plus
  • POS Plus
  • Regional Preferred
Blue Cross and Blue Shield
  • Horizon BCBS NJ
  • Empire/Anthem BCBS PPO
  • Federal Program
  • Medicare Advantage
  • Out-of-State BCBS PPO Blue Card
  • PPO
  • HMO
  • Open Access
  • Cigna Health Plan (CHP)
  • Choice Fund
  • Indemnity
  • International
  • Open Access Plus
CHN - Consumer Health Network
Clover Medicare Advantage
  • All Plans
Coventry Health Plans
First Health
  • All Plans with First Health Logo
Humana Medicare Advantage
  • PPO
  • Traditional Medicare
  • Railroad Medicare
  • Medicare Supplemental Plans
  • Medicare Advantage PPO
  • All plans PPO
  • Multiplan/PHCS logo on card - PPO
Oxford Healthplan
  • Freedom
  • Liberty
  • Medicare Advantage
  • Qualcare logo on card
  • OSCAR NJ Individual and Family Plan
  • Qualcare logo on card
  • PPO
  • EPO
  • Community Care Network
  • Emblem Health (with Qualcare logo)
  • HIP Prime (with Qualcare logo)
  • Traditional Plan
United Healthcare
  • AARP Medicare Complete - HMO, PPOChoice
  • Choice Plus
  • HMO
  • Navigate - EPO, HMO, POS
  • PPO

Training and Education


  • National Certification Board for Diabetes Educators

Medical School

  • Health Behavioral Psychology, Northcentral University, Prescott Valley, Arizona


  • Human Nutrition and Exercise Physiology, Columbia University Teacher's College, New York, NY


  • Human Nutrition, University of Massachusetts, Amherst, MA

About Me

Certified Diabetes Educator, Mary C. Friesz, PhD, RD, CDE, specializes in medical nutrition for people with diabetes. Dr. Friesz has more than 25 years' experience educating patients about diabetes, including diabetes management through nutrition, exercise, and weight control. Her expertise includes lifestyle-based wellness plans involving nutrition and exercise.

Before joining Summit Health, Dr. Friesz practiced privately with Designs for Healthy Lifestyles in South Florida. She also has practiced with the Family Practice and Counseling Network in Philadelphia, Pennsylvania, and Pediatric Endocrinology Consultants in Margate, Florida.

Dr. Friesz says, "I encourage my patients to gradually adopt healthy lifestyle practices so the changes are manageable. I believe this approach helps empower patients to continue their healthy behaviors long term."

A gifted teacher, Dr. Friesz has taught undergraduate courses in the health sciences. She has delivered invited presentations on health and wellness.

When she is not working with her patients, Dr. Friesz enjoys spending time with her family, watching her son play hockey, walking her dogs, and writing about fitness and nutrition.