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Ramon A. Riojas, MD, PHD

Ramon A. Riojas, MD, PHD

Clinical Fellow (PGY-6)
Thoracic Surgery

Contact Information

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  • Austin College, TX, B.A., Biochemistry, 1999
  • University of Texas Health Sciences Center in San Antonio, Ph.D., Biochemistry, 2007
  • Uniformed Services University of Health Sciences, MD, 2010
  • Keesler Medical Center, Keesler AFB, General Surgery 2010-2016
  • Keesler Medical Center, Research Fellowship, 2011-2012
  • American Board of Surgery, General Surgery
  • General Thoracic and Cardiac Surgery
  • ECMO
  • Minimally invasive surgery
  • Robotic assisted Surgery
  • Simulation training

Ramon Riojas, M.D., Ph.D., is currently a Thoracic Surgery fellow at UCSF. He began his education at Austin College in Sherman, TX earning a BA in Biochemistry. He pursued a PhD in Biochemistry at the University of Texas Health Sciences Center in San Antonio, TX working in the lab of Dr. Feng Liu and Dr. Lily Dong. His research included characterizing the insulin signaling pathway and the role of PDK-1 phosphorylation. He joined the United States Air Force and attended the Uniformed Services University Medical School in Bethesda, MD. After earning his MD in 2010, he continued his training at Keesler Medical Center, Keesler AFB in Biloxi, MS. He did a research fellowship at Keesler in 2011-2012 and was chief resident in 2015-2016. He remained on staff at Keesler as a General Surgeon for two years, during which time he deployed to Iraq in support of Operation Inherent Resolve in 2017. He transferred to Travis AFB, CA as a general surgeon and the Surgery Disaster Team Chief. He is currently taking a hiatus from active duty in the USAF while undergoing fellowship training.

  1. Iverson K, Riojas R, Sharon D, Hall AB. Objective comparison of animal training versus artificial simulation for initial cricothyroidotomy training. Am Surg. 2015 May; 81(5):515-8. View in PubMed
  2. Hall AB, Riojas R, Sharon D. Comparison of self-efficacy and its improvement after artificial simulator or live animal model emergency procedure training. Mil Med. 2014 Mar; 179(3):320-3. View in PubMed
  3. Liu M, Zhou L, Wei L, Villarreal R, Yang X, Hu D, Riojas RA, Holmes BM, Langlais PR, Lee H, Dong LQ. Phosphorylation of adaptor protein containing pleckstrin homology domain, phosphotyrosine binding domain, and leucine zipper motif 1 (APPL1) at Ser430 mediates endoplasmic reticulum (ER) stress-induced insulin resistance in hepatocytes. J Biol Chem. 2012 Jul 27; 287(31):26087-93. View in PubMed
  4. Riojas RA, Bahr BA, Thomas DB, Perciballi J, Noyes L. A case report of lymphangioleiomyomatosis presenting as spontaneous pneumothorax. Mil Med. 2012 Apr; 177(4):477-80. View in PubMed
  5. Riojas RA, Folio L. Answer to last month's radiology case and image: Bilateral patellar tendon rupture. Mil Med. 2009 Jul; 174(7):iii-iv. View in PubMed
  6. Wang C, Liu M, Riojas RA, Xin X, Gao Z, Zeng R, Wu J, Dong LQ, Liu F. Protein kinase C theta (PKCtheta)-dependent phosphorylation of PDK1 at Ser504 and Ser532 contributes to palmitate-induced insulin resistance. J Biol Chem. 2009 Jan 23; 284(4):2038-44. View in PubMed
  7. Riojas RA, Kikani CK, Wang C, Mao X, Zhou L, Langlais PR, Hu D, Roberts JL, Dong LQ, Liu F. Fine tuning PDK1 activity by phosphorylation at Ser163. J Biol Chem. 2006 Aug 04; 281(31):21588-93. View in PubMed
  8. Mao X, Kikani CK, Riojas RA, Langlais P, Wang L, Ramos FJ, Fang Q, Christ-Roberts CY, Hong JY, Kim RY, Liu F, Dong LQ. APPL1 binds to adiponectin receptors and mediates adiponectin signalling and function. Nat Cell Biol. 2006 May; 8(5):516-23. View in PubMed
  9. Wick MJ, Dong LQ, Riojas RA, Ramos FJ, Liu F. Mechanism of phosphorylation of protein kinase B/Akt by a constitutively active 3-phosphoinositide-dependent protein kinase-1. J Biol Chem. 2000 Dec 22; 275(51):40400-6. View in PubMed
Publications provided by UCSF Profiles, powered by CTSI at UCSF. View profile of Ramon A. Riojas, MD, PHD
Please note: UCSF Profiles publications are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact CTSI for help.
  1. Riojas, RA, The Military Surgeon, Grand Rounds Lecture, Keesler Medical Center, 25 July 2018.
  2. Riojas, RA, Iverson K, Sharon D, Hall A. Randomized Objective Comparison of Live Animal Training versus Artificial Simulation for Initial Cricothyroidotomy Training. Military Health System Research Symposium, 2013, Fort Lauderdale, FL.
  3. Riojas, Ramon A., Retrospective Review of the Combined Use of Proximal and Distal Cerebral Protection Devices During Carotid Artery Angioplasty and Stenting, Society of Air Force Clinical Surgeons, May 2012, San Antonio, TX
  4. Riojas, Ramon, A., Laparoscopic Skills Training of General Surgery Residents, Society of Air Force Clinical Surgeons, May 2012, San Antonio, TX
  5. Ramon A. Riojas, Xuming Mao, Derong Hu, Lily Q. Dong and Feng Liu. Insulin Stimulated Phosphorylation Of Pdk-1 At Ser244 And Ser163: A Potential Mechanism Of Regulation. Oral Presentation, American Diabetes Association, 64th Scientific Sessions, Orlando, FL, 2004.


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