L. Garrison Morgan, MD, FACC

Cardiology & Cardiovascular Disease, Interventional Cardiology, Structural Heart

Phone: (803) 409-7170
(803) 409-7175

  • Undergrad: Wofford College
  • Medical degree: University of South Carolina School of Medicine
  • Fellowship: Medical College of Georgia & Florida/Columbia University

Dr. Garrison Morgan receives USC School of Medicine's 2019 prestigious "Distinguished Young Alumni Award." 

Voted Best Cardiologist in Lexington Life Magazine's 2019 Best in Lexington list!

Follow his activities on social with #DrMorganAtProv.

Board-certified in internal medicine and cardiovascular disease.


  • Undergrad: Wofford College
  • Medical degree: University of South Carolina School of Medicine
  • Fellowship: Medical College of Georgia & Florida/Columbia University

Dr. Garrison Morgan receives USC School of Medicine's 2019 prestigious "Distinguished Young Alumni Award." 

Voted Best Cardiologist in Lexington Life Magazine's 2019 Best in Lexington list!

Follow his activities on social with #DrMorganAtProv.

Board-certified in internal medicine and cardiovascular disease.

Dr. Morgan received his medical degree from the University of South Carolina School of Medicine here in Columbia.  He completed his residency in Internal Medicine at Palmetto Health Richland/Univ of South Carolina before continuing his training at the Medical College of Georgia, where he completed his fellowship in cardiovascular diseases. He went on to finish a sub-specialty fellowship in Interventional and Structural Cardiology at Mount Sinai Medical Center of Florida/Columbia University where he completed comprehensive training in the treatment of complex coronary artery disease as well as newly emerging therapies in percutaneous structural/valvular heart disease. He is currently board-certified in internal medicine and cardiovascular disease, and has professional affiliations with the American Medical Association, South Carolina Medical Association, Society for Cardiovascular Angiography and Interventions, and the American College of Cardiology.

Dr. Morgan is a leading innovator of Structural Heart procedures, which are minimally invasive alternatives to open heart surgery. In 2017, he implanted the first MitraClip in the Midlands, and in 2018, he implanted Providence's first bifurcated stent. Continuuing to push for innovation, he performed South Carolina's first tricuspid clip procedure here at Providence in 2019. 

In Dr. Morgan has given multiple lectures and presentations at local and national medical conferences and has published numerous papers on various cardiovascular topics in his areas of interest. In 2019, he was named "Best Cardiologist in Lexington" by Lexington Life Magazine.

Residency: Internal Medicine at Palmetto Health Richland/Univ of South Carolina 

Medical College of Georgia: cardiovascular diseases

Sub-specialty fellowship in Interventional and Structural Cardiology at Mount Sinai Medical Center

Structural Heart Diseases and Structural Cardiology, including completion of comprehensive training in the treatment of complex coronary artery disease as well as newly emerging therapies in percutaneous structural/valvular heart disease. 

Peer Reviewed Journal Articles/Abstracts

  • Biscotte SM, Levick SP, Bertling ML, Morgan LG, Janìcki JS and Brower GL. Angiotensin II mediated activation of cardiac mast cells. The FASEB Journal. 2007 Jan; 21(5): 2153.
  • Gardner JD, Murray DB, Morgan LG, Carpenter CL, Bradshaw JB, Brower GL. Can diesel particulate matter directly activate cardiac mast cells. The FASEB Journal. 2007 Jan; 21(5): 868.
  • Melendez GC, Voloshenyuk TG, McLarty JL, Bradshaw JB, Morgan LG, Levick SP, Gardner JD Brower GL. Sodium sulfite mediated oxidative stress triggers cardiac mast cell degranulation. The FASEB Journal. 2007 Jan; 21(5): 1140.
  • Morgan LG, Levick SP, Murray DB, Forman MF, Brower GL and Janicki JS. An innovative technique for isolating functional mast cells from the heart. The FASEB Journal. 2007 Jan; 21(5): 1353-1354.
  • Morgan LG, Levick SP, Murray DB, Forman MF, Brower GL and Janicki JS. A Superior Technique for Isolation of Functional Mast Cells from the Heart. Inflammation Research. 2008 May; 57(5): 241-246.
  • Murray DB, Gardner JD, Levick SP, Brower GL, Morgan LG and Janicki JS. Response of Cardiac Mast Cells to Atrial Natriuretic Peptide. AJP: Heart and Circulatory Physiology. 2007 Aug; 293(2): 1216-1222.
  • Morgan LG, Jakes D, Isbell DC. A diagnostic long shot: dyspnea and cardiomegaly in a 32-year-old male with unilateral leg swelling. Circulation: Heart Failure. 2012 Jul; 5(4): 71-72.
  • Morgan LG, Davis AL, Poommipanit P, Ahmed Y. Actionomyces naeslundi, a previously undocumented cause of infective endocarditis; with Literary Review. American Journal of Infectious Disease. 2014 Oct; 10(3): 132-136.
  • Morgan LG, Gardner J, Calkins J. The Incidental Finding of a Persistent Left Superior Vena Cava: Implications for Primary Care Providers. Case Reports in Medicine. 2015 January, ePub.
  • Morgan LG, Poommipanit P. Septal Sobriety: Aborted Alcohol Septal Ablation for Hypertrophic Cardiomyopathy Secondary to Diffuse Coronary Cameral Fistulas. (Accepted for publication Cath Lab Digest. March 2016)

Peer Reviewed Journal Articles/Abstracts (Other than Published)

  • Morgan LG, Poommipanit, P, Isbell DC. Asymptomatic Syphilitic Aortitis with Critical Coronary Ostial Stenosis Discovered on Routine Pre-op Evaluation. JACC, July 2016. Publication Status: Submitted.
  • Ratanapo S, Morgan LG, Kapoor D. Critical Role of Intravascular Ultrasound: Complex Salvage PCI to Correct Propagated Left Main Dissection and Sub-intimal Stenting during Acute MI at Rural Center. JACC Interventions; July 2016. Publication Status: Submitted.
  • Levick SP, Patel C, Jani P, Morgan LG, Janicki J S and Brower GL. Receptor-independent inhibition of substance P-mediated cardiac mast cell activation by peroxisome proliferator activated receptor-alpha agonists. Publication Status: Pre-Submisson.
  • Robinson VJB, Morgan LG, Krothapalli SM, Memon AA, Singhal A, Saleem U, Ahmed AJ, Mandawat MK, Corley JH, Litwin SE, Kapuku GK. Changes in Venous Hemodynamics in Response to Exercise; A Novel, real-time Assessment using Computed Tomography. Publication Status: Pre-Submisson.
  • Krothapalli SM, Kapuku GK, Memon AA, Corley JH, Litwin SE, Mandawat MK, Morgan LG, Robinson VJB. Consequences of BMI on Venous Resistance and its Role in Modulating Cardiac Filling. Publication Status: Pre-Submisson.

Poster Presentations

  • Biscotte SM, Levick SP, Bertling ML, Morgan LG, Janicki JS and Brower GL. (2007). Angiotensin II mediated activation of cardiac mast cells. Poster presented at: Experimental Biology Meeting; DC, DC.
  • Melendez GC, Voloshenyuk TG, McLarty JL, Bradshaw JB, Morgan LG, Levick SP, Gardner JD and Brower GL. (2007). Sodium sulfite mediated oxidative stress triggers cardiac mast cell degranulation. Poster presented at: Experimental Biology Meeting; Washington, DC.
  • Morgan LG, Levick SP, Murray DB, Forman MF, Brower GL and Janicki JS. (2007). An innovative technique for isolating functional mast cells from the heart. Poster presented at: Experimental Biology Meeting; Washington, DC.
  • Melendez GC, Voloshenyuk TG, McLarty JL, Morgan LG, Levick SP, Murray DB, Gardner JD and Brower GL. (2008). Mast Cell Mediated Cardiac Dysfunction and Remodeling Induced by Diesel Particulate Matter Inhalation. Poster presented at: 4th Biannual U.S. EPA/NIEHS Meeting on The Role of Air Pollutants in Cardiovascular Disease; Durham, NC.
  • Voloshenyuk TG, McLarty JL, Melendez GC, Bradshaw JB, Morgan LG, Levìck SP, Gardner JD and Brower GL. (2008). Oxidative Stress Mediated Cardiac Mast Cell Degranulation. Poster presented at: 4th Biannual U.S. EPA/NHLBI/NIEHS Meeting on The Role of Air Pollutants in Cardiovascular Disease; Durham, NC.
  • Jacob J, Lucas A, Johnson B, Morgan LG. (2012). Where did my Bladder go? A unique case of Scrotal Cystocele. Poster presented at: South Carolina Medical Association 164th Annual Meeting; Myrtle Beach, SC.
  • Morgan LG, Jakes D, Isbell DC. (2012). A Diagnostic Long-shot: Dyspnea and Cardiomegaly in a 32 year old with unilateral leg swelling. Poster presented at: South Carolina Medical Association 164th Annual Meeting; Myrtle Beach, SC.
  • M Brown, M Ibe, A Garg, M Hasan Khan, L. G. Morgan, S Ratanapo, Z Afghani, J Ketchum, B Janiak, M Jonah, and V J B Robinson.  Using Thrombolytic Agents to Improve Specificity of the D-Dimer Test for Detection of Intravascular Clots in Patients Suspected of Pulmonary Embolism. Poster presented at: Georgia Chapter of American College of Cardiology. 2015. Lake Oconee, GA.
  • L G Morgan, J Cuomo, M Abrha, V J B Robinson. Prolonged Oral N-Acetylcysteine Administration for Renal Protection in High Risk Patients, Prior to Coronary Angiography. Poster presented at: Georgia Chapter of American College of Cardiology. 2015. Lake Oconee, GA.

GRU, Dept. Cardiovascular Medicine. Augusta, Georgia - Primary Investigator: Aimed at determining the effect of peri-operative administration of N-Acetylcysteine (via its anti-oxidative properties) on the prevention of post-operative atrial fibrillation in patients undergoing CABG and/or valve repair/replacement. 

GRU, Dept. Cardiovascular Medicine. Augusta, Georgia - Sub Investigator: Clinical trial for a newly patented lab test designed to improve diagnosis of venous thrombo-embolism. 

University of South Carolina School of Medicine. Columbia, South Carolina - Research Specialist: Full time research in cardiovascular disease and congestive heart failure under the tutelage of Dr. Gregory Brower and Dr. Joseph Janicki 

  • USC School of Medicine's Distinguished Young Alumni Award 2019
  • Named "Best Cardiologist in Lexington" by Lexington Life Magazine
  • Charles S. Bryan Residency Scholar Award 2013
  • Elected Member of the School of Medicine Admissions Committee 2007-2010
  • USC School of Medicine Independent Learning Research Award Winner 2007
  • American Medical Association
  • South Carolina Medical Association
  • Society for Cardiovascular Angiography and Interventions
  • The American College of Cardiology
Volnteer work: 

Prayer Grahams. Columbia, South Carolina -- Co-Founder, Non-Profit Organization

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