Director of Pediatric Metabolic Bone Disorders Program
Attending Physician
Assistant Professor of Clinical Pediatrics, Keck School of Medicine of USC
  • Summary
  • Publications
  • Research
  • Locations

Clinical Interests

Metabolic and mineral bone disorders
Skeletal genetic disorders
Growth

Education

Medical School: 

Doctor of Osteopathic Medicine (Honors), Western University of Health Sciences, College of Osteopathic Medicine, Pomona, CA

Internship: 

Pediatrics, Children’s Hospital Los Angeles (CHLA), USC Keck School of Medicine, Los Angeles, CA

Residency: 

Pediatrics, CHLA, USC Keck School of Medicine, Los Angeles, CA

Fellowship: 

Pediatric Endocrinology, CHLA, USC Keck School of Medicine, Los Angeles, CA

Accomplishments

Certification: 

American Board of Pediatrics,American Board of Pediatrics, Subspecialty Board, Pediatric Endocrinology

Professional Memberships: 

The Endocrine Society 
Pediatric Endocrine Society 
American Diabetes Association 
American Society for Bone and Mineral Research 
European Society of Pediatric Endocrinology

Awards: 

Featured Poster Presentation 
Pediatric Resident, Outstanding Teaching Award 
Stephen L. Graham, M.D. Academic Excellence Scholarship 
Second Placed Best Research Poster/ Oral Presentation 
Frederic R. Weisman Philanthropic 
The National Dean’s List 
Intensive Summer Anatomy Course 
The National Society of Collegiate Scholars

Other Information

Specialty Interest: 

Optic Nerve Hypoplasia/Septo-Optic Dysplasia, Puberty, Hypopituitarism, Metabolic Bone disorders

Publications: 

Akhtar Ali S, Kang H, Olney R, Ramos-Platt L, Ryabets-Lienhard A, Georgia S, Pitukcheewanont P. Quantifying RANKL and OPG levels in healthy children: A large cross-sectional analysis. Bone. 2019 Jun 15;127:215-219. doi: 10.1016/j.bone.2019.06.012. PMID: 31212033

Ryabets-Lienhard A, Akhtar S, Monzavi R, Austin J. 
Meeting Report: 2018 Annual Meeting of the Pediatric Endocrine Society, Toronto, Canada, May 5-8, 2018, Selected Highlights. Pediatr Endocrinol Rev. 2018 Dec;16(2):284-293. 
doi:10.17458/per.vol16.2018.lama.mr.pestoronto. 
PMID:30556661 

Akhtar Ali S, Ramos-Platt L, Ryabets-Lienhard A, Georgia S, Pitukcheewanont P "Evaluating RANKL and OPG Levels in Patients with Duchenne Muscular Dystrophy", has been accepted (June 2019) for publication in Osteoporosis International. 

Ryabets-Lienhard, A, Issaranggoon na Ayuthaya, Graham Jr, J, Pitukcheewanont, P. A Case of Severe TBCE-negative Hypoparathyroidism-Retardation-Dysmorphism Syndrome: Case Report and Literature Review. Am J Med Genet A. 2018 Aug;176(8):1768-1772. PMID: 30055029 

Stewart C, Garcia-Filion P, Fink C, Ryabets-Lienhard A, Geffner ME, Borchert M. Efficacy of Growth Hormone Replacement on Anthropometric Outcomes, Obesity, and Lipids in Children with Optic Nerve Hypoplasia and Growth Hormone Deficiency. Int J Pediatr Endocrinol. 2016:5, 2016. PMID: 26937243

Research Interests: 

Disorders of Pediatric Metabolic Bone Disease
Skeletal Genetic Disorders. 
Growth

4650 Sunset Boulevard
MS #61
Los Angeles, CA 90027
Phone: 323-361-4606Office
Fax: 323-361-1301Fax

CHLA - Valencia Care Center

23838 Valencia Blvd.
Suite 140
Valencia, CA 91355
Phone: 661-362-1240Office