MarkLeoRyanMD

General Surgery • Dallas, TX

Pediatric General Surgery, Trauma Surgery & Surgical Critical Care

Physician

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Office
5323 Harry Hines Boulevard
Dallas, TX 75390
Phone+1 214-456-7000

Fax+1 214-456-6320
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Education & Training

University of Miami/Jackson Health SystemResidency, Surgery, 2007 - 2014
Albert Einstein College of MedicineClass of 2007

Certifications & Licensure

TX State Medical License 2018 - 2024
WI State Medical License 2018 - 2019
AR State Medical License 2016 - 2018
TN State Medical License 2015 - 2017
FL State Medical License 2010 - 2016
American Board of Surgery Surgery
American Board of Surgery Pediatric Surgery
American Board of Surgery Surgical Critical Care

Awards, Honors, & Recognition

Fellow (FACS) American College of Surgeons

Publications & Presentations

PubMed

Outcomes of Extracorporeal Life Support Utilization for Pediatric Patients With COVID-19 Infections.
Jillian C Jacobson, Mark L Ryan, Adam M Vogel, Steven C Mehl, Shannon N Acker, Connor Prendergast, Benjamin E Padilla, Justin Lee, Stephanie D Chao, Nolan R Martin, Ka...> ;ASAIO Journal. 2024 Feb 1
Response to the letter to the editor for our article entitled "Utility of continuous pulse co-oximetry for hemoglobin monitoring in pediatric patients with solid organ...
Mark L Ryan, Sarah B Cairo, Regan F Williams> ;The Journal of Trauma and Acute Care Surgery. 2024 Apr 1
Creation of Three-dimensional Anatomic Models in Pediatric Surgical Patients Using Cross-sectional Imaging: A Demonstration of Low-cost Methods and Applications.
Mark L Ryan, Jennifer Leslie Knod, Samir R Pandya> ;Journal of Pediatric Surgery. 2024 Mar 1
Utility of continuous pulse CO-oximetry for hemoglobin monitoring in pediatric patients with solid organ injuries at level 1 trauma centers: A pilot study.
Mark L Ryan, Sarah B Cairo, Cory McLaughlin, Lela Herring, Regan F Williams> ;The Journal of Trauma and Acute Care Surgery. 2023 Sep 1
The Sinister Surgeon: Advanced Pediatric Minimally Invasive Surgery for Left-Handed Surgeons.
Jessica A Zagory, Mark L Ryan, Samir R Pandya> ;Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A. 2023 Jun 1
Improving Billing and Collections in a High-Volume Pediatric Surgery Practice: Denials-Based Approach.
Mark L Ryan, Kevin T Mutore, Jennifer DeLeon, Lauren Gillory, Dai H Chung, Samir Pandya> ;Journal of the American College of Surgeons. 2023 Apr 1
61 citations
Changes in pediatric trauma during COVID-19 stay-at-home epoch at a tertiary pediatric hospital.
Ethan L. Sanford, Jessica A. Zagory, James Michael Blackwell, Peter Szmuk, Mark Ryan, Aditee P. Ambardekar> ;Journal of Pediatric Surgery. 2021 Jan 20
6 citations
Road Traffic Accidents and Disparities in Child Mortality.
Ali A. Mokdad, Lindsey L. Wolf, Samir Pandya, Mark Ryan, Faisal G. Qureshi> ;Pediatrics. 2020 Nov 1
4 citations
Retrospective review of SGLT2 inhibitor exposures reported to 13 poison centers
Scott Schaeffer, Carol DesLauriers, Henry A. Spiller, Alfred Aleguas, Salvador Baeza, Mark L. Ryan> ;Clinical Toxicology. 2018 Mar 1
7 citations
Evaluation of toxicity after acute accidental methotrexate ingestions in children under 6 years old: a 16-year multi-center review
Hannah L. Hays, Michael C. Beuhler, Henry A. Spiller, Julie A Weber, James B. Mowry, Mark L. Ryan, Natalie E. Spiller, Ashley N Webb> ;Clinical Toxicology. 2018 Feb 1
31 citations
An observational study of the Factor Xa inhibitors rivaroxaban and apixaban as reported to eight poison centers
Henry A. Spiller, James B. Mowry, Alfred Aleguas, Jill R.K. Griffith, Robert Goetz, Mark L. Ryan, Stacey A. Bangh, Wendy Klein-Schwartz, Scott Schaeffer, Marcel J. Cas...> ;Annals of Emergency Medicine. 2016 Feb 1
16 citations
Trauma induced hypercoagulablity in pediatric patients
Mark L. Ryan, Robert M. Van Haren, Chad M. Thorson, David M. Andrews, Eduardo A. Perez, Holly L. Neville, Juan E. Sola, Kenneth G. Proctor> ;Journal of Pediatric Surgery. 2014 Aug 1
38 citations
Pre-existing hypercoagulability in patients undergoing potentially curative cancer resection
Chad M. Thorson, Robert M. Van Haren, Mark L. Ryan, Emiliano Curia, Danny Sleeman, Joe U. Levi, Alan S. Livingstone, Kenneth G. Proctor> ;Surgery. 2014 Jan 1
5 citations
Bilateral near-infrared spectroscopy for detecting traumatic vascular injury.
Robert M. Van Haren, Mark L. Ryan, Chad M. Thorson, Nicholas Namias, Alan S. Livingstone, Kenneth G. Proctor> ;The Journal of Surgical Research. 2013 Sep 1
21 citations
Evaluation of changes in poisoning in young children: 2000 to 2010
Henry A. Spiller, Michael C. Beuhler, Mark L. Ryan, Douglas J. Borys, Alfred Aleguas, George M. Bosse> ;Pediatric Emergency Care. 2013 May 1
34 citations
Persistence of hypercoagulable state after resection of intra-abdominal malignancies.
Chad M. Thorson, Robert M. Van Haren, Mark L. Ryan, Emiliano Curia, Danny Sleeman, Joe U. Levi, Alan S. Livingstone, Kenneth G. Proctor> ;Journal of the American College of Surgeons. 2013 Apr 1
24 citations
Change in hematocrit during trauma assessment predicts bleeding even with ongoing fluid resuscitation.
Chad M. Thorson, Mark L. Ryan, Robert M. Van Haren, Reginald Pereira, Jeremy Olloqui, Christian A. Otero, Carl I. Schulman, Alan S. Livingstone, Kenneth G. Proctor> ;The American Surgeon. 2013 Apr 1
2 citations
Use of CT enterography for the diagnosis of lower gastrointestinal bleeding in pediatric patients.
James S. Davis, Mark L. Ryan, Jonathan M. Fields, Holly L. Neville, Eduardo A. Perez, Juan E. Sola> ;Journal of Pediatric Surgery. 2013 Mar 1
17 citations
Admission Hematocrit and Transfusion Requirements after Trauma
Chad M. Thorson, Robert M. Van Haren, Mark L. Ryan, Reginald Pereira, Jeremy Olloqui, Gerardo A. Guarch, Jose M. Barrera, Alexander M. Busko, Alan S. Livingstone, Kenn...> ;Journal of the American College of Surgeons. 2013 Jan 1
36 citations
ECMO hospital volume and survival in congenital diaphragmatic hernia repair
James S. Davis, Mark L. Ryan, Eduardo A. Perez, Holly L. Neville, Steven N. Bronson, Juan E. Sola> ;The Journal of Surgical Research. 2012 Dec 1
46 citations
Military trauma training at civilian centers: a decade of advancements.
Chad M. Thorson, Joseph J. DuBose, Peter Rhee, Thomas E. Knuth, Warren C. Dorlac, Jeffrey A. Bailey, George D. Garcia, Mark L. Ryan, Robert M. Van Haren, Kenneth G. Pr...> ;The Journal of Trauma and Acute Care Surgery. 2012 Dec 1
45 citations
Venous thromboembolism after trauma: a never event?*.
Chad M. Thorson, Mark L. Ryan, Robert M. Van Haren, Emiliano Curia, Jose M. Barrera, Gerardo A. Guarch, Alexander M. Busko, Nicholas Namias, Alan S. Livingstone, Kenne...> ;Critical Care Medicine. 2012 Nov 1
6 citations
Effect of hetastarch bolus in trauma patients requiring emergency surgery
Mark L. Ryan, Michael P. Ogilvie, Bruno M. T. Pereira, Juan C.arlos Gomez-Rodriguz, Alan S. Livingstone, Kenneth G. Proctor> ;Journal of Special Operations Medicine. 2012 Sep 1
19 citations
Insertion of central venous catheters induces a hypercoagulable state.
Mark L. Ryan, Chad M. Thorson, David R. King, Robert M. Van Haren, Ronald J. Manning, David M. Andrews, Alan S. Livingstone, Kenneth G. Proctor> ;The Journal of Trauma and Acute Care Surgery. 2012 Aug 1
11 citations
Segmental absence of intestinal musculature: an increasingly reported pathology.
James S. Davis, Mark L. Ryan, John Shields, Juan E. Sola, Eduardo A. Perez, Holly L. Neville, Maria M. Rodriguez> ;Journal of Pediatric Surgery. 2012 Aug 1
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