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Office
5220 Claremont Ave
Oakland, CA 94618Phone+1 510-428-3226Fax+1 510-547-2702- Is this information wrong?
Education & Training
- University of California (San Francisco)Residency, Pediatrics, 1998 - 2001
- University of California San Francisco School of MedicineClass of 1998
Certifications & Licensure
- CA State Medical License 1999 - 2025
- American Board of Pediatrics Pediatrics
Awards, Honors, & Recognition
- Fellow (FAAP) American Academy of Pediatrics
Publications & Presentations
PubMed
- 21 citationsAssociations Between Change in Total and Free 25-Hydroxyvitamin D With 24,25-Dihydroxyvitamin D and Parathyroid HormoneAlbert Shieh, Christina Ma, Rene F. Chun, Jonas Wittwer-Schegg, Leon Maria Jacobus Wilhelmus Swinkels, Tonnie Huijs, Jeffrey C. Wang, Ines Donangelo, Martin Hewison, J...> ;The Journal of Clinical Endocrinology and Metabolism. 2018 Sep 1
- 33 citationsEffects of Cholecalciferol vs Calcifediol on Total and Free 25-Hydroxyvitamin D and Parathyroid HormoneAlbert Shieh, Christina Ma, Rene F. Chun, Sten Witzel, Brandon Rafison, Hannah T M Contreras, Jonas Wittwer-Schegg, Leon Maria Jacobus Wilhelmus Swinkels, Tonnie Huijs...> ;The Journal of Clinical Endocrinology and Metabolism. 2017 Apr 1
- 65 citationsEffects of High-Dose Vitamin D2 Versus D3 on Total and Free 25-Hydroxyvitamin D and Markers of Calcium BalanceAlbert Shieh, Rene F. Chun, Christina Ma, Sten Witzel, Briana Meyer, Brandon Rafison, Leon Maria Jacobus Wilhelmus Swinkels, Tonnie Huijs, Sam Pepkowitz, Brett Holmqui...> ;The Journal of Clinical Endocrinology and Metabolism. 2016 May 18
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Professional Memberships
- Fellow
Hospital Affiliations
- UCSF Benioff Children's Hospital OaklandOakland, California
- UCSF Medical CenterSan Francisco, California
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