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St. Luke's Clinic – Genetics and Metabolic

St. Luke's Clinic – Genetics and Metabolic is the only clinic of its kind in Idaho, with an expert team of physicians, genetic counselors, and a metabolic dietitian. Our goal is to provide a medical home for adults and children with genetic syndromes and metabolic conditions of inborn errors of metabolism. We also aid in the diagnostic evaluation of people from infancy to adulthood with unexplained growth or developmental problems, seizures, hypotonia, hypermobility, physical differences, connective tissue disorders, and other concerns.

Our team sees patients with a variety of conditions, including, but not limited to:

  • Neurofibromatosis type 1 (NF1)
  • Williams syndrome
  • Smith-Magenis syndrome (SMS)
  • Ehlers-Danlos syndrome
  • Chromosomal duplications or deletions
  • Marfan syndrome
  • Organic acidemias, such as MMA
  • Phenylketonuria (PKU)
  • MCAD deficiency
  • Mitochondrial disorders
  • Carnitine or biotinidase deficiency
  • Rubenstein Taybi syndrome
We welcome referrals at any age. Patients are generally referred through their primary care physicians or other specialist. However, appropriate self-referrals are accepted.


  • Nutritional Counseling for Children


    Jennifer Beazer, RD, CSP, LD is board certified in pediatric nutrition and has completed over 150 hours of training specific to inborn errors of metabolism. 

    Jennifer earned her bachelor's degree in nutrition and dietetics from Idaho State University. She participates in local, regional, and national campaigns to improve the lives of individuals affected with metabolic disorders. She is also a member of Genetic Metabolic Dietitians International and serves as co-chair for the organization’s communication and advocacy committee.


    Accepting new patients
  • Biography

    Leah Fleming, MD specializes in clinical genetics and medical biochemical genetics. She focuses on caring for children and adults with a wide range of conditions, including chromosomal disorders such as Smith Magenis Syndrome and metabolic disorders like phenylketonuria, together with a team that includes two genetic counselors and a metabolic dietitian. 


    Accepting new patients
  • Genetics


    Brittney Knyszek, MS, LCGC has experience and expertise in explaining complex genetic concepts in a clear, understandable way, and in providing a range of perspectives for those faced with difficult decisions. She has a special interest and knowledge in the realm of hearing loss as it relates to genetics.

    Brittney earned her master's degree in genetic counseling from Case Western Reserve University and nearby community and specialty hospitals.


    Accepting new patients
  • Availability

    Accepting new patients
  • Biography

    Rachel Westman, MS, LCGC specializes in general pediatric and and adult genetics, biochemical genetics, and also works with patients and families with neuromuscular conditions.

    Rachel earned her bachelor's degree in biology with a minor in bioethics from the University of Idaho and her master's degree in genetic counseling from the University of Pittsburgh. She is board certified by the American Board of Genetic Counseling and a member of the National Society of Genetic Counselors and the American College of Medical Genetics and Genomics.


    Accepting new patients

Building on Our Promise to Children

St. Luke

Children's Pavilion - Opening in 2019

Designed to meet the needs of kids, their families, and the people who care for them, this state-of-the-art facility on our downtown Boise campus will more than double our clinical space and improve vital services that keep care close to home. It will bring most of our pediatric specialists and services under one roof, allowing us to provide care more efficiently and easing the burden on parents and kids who will now be able to see several providers in one location in one day.