Specialists In You

Your Radiologists

Meet Our Team

Stephen Edward Arndt, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Tulane University School of Medicine, New Orleans, LA
  • EInternship: Internal Medicine, Ochsner Clinic Foundation, New Orleans, LA
  • EResidency: Diagnostic Radiology, Ochsner Clinic Foundation, New Orleans, LA
  • EMember: Radiological Society of North America, Society of Interventional Radiology, American Medical Association

Chad J. Aultman, M.D.

  • EBoard-Certified: American Board of Radiology, Certificate of Added Qualification/Vascular and Interventional Radiology
  • EMD: Louisiana State University School of Medicine, New Orleans, LA
  • EInternship & Residency: David Grant Medical Center, Travis AFB, CA
  • EFellowship, Interventional Radiology: Wilford Hall Medical Center, Lackland AFB, TX
  • EMember: American College of Radiology, Radiological Society of North America, Society of Cardiovascular and Interventional Radiologists, American Roentgen Ray Society, Society of Interventional Radiology, Alpha Omega Alpha

Robert M. Branstetter III, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University School of Medicine, New Orleans, LA
  • EInternship, Internal Medicine: Earl K. Long Hospital, Louisiana State University Medical Center, Baton Rouge, LA
  • EResidency, Radiology: Baylor University Medical Center, Dallas, TX
  • EFellowship, Musculoskeletal: Diversified Radiology of Colorado, P.C., Denver, CO
  • EMember: American College of Radiology, Radiological Society of North America, Texas Medical Association

Jason A. Brown, M.D.

  • EBoard-Certified: American Board of Radiology, Louisiana State Board of Medical Examiners
  • EMD: Louisiana State University Health and Science Center, Shreveport, LA
  • EResidency, Diagnostic Radiology: University of Texas Southwestern Medical Center at Dallas, Dallas, TX
  • EFellowship, Musculoskeletal: University of Texas Southwestern Medical Center at Dallas, Dallas, TX
  • EMember: American Roentgen Ray Society

Brant Casford, M.D.

  • EBoard-Certified: American Board of Surgery
  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University School of Medicine, Shreveport, LA
  • EInternship: General Surgery, USAF Medical Center, Keesler, AFB, MS
  • EResidency: General Surgery, USAF Medical Center, Keesler, AFB, MS
  • EResidency/Fellowship: Diagnostic Radiology, Wilford Hall Medical Center, Lackland AFB, TX
  • EMember: American Roentgen Ray Society

Thomas A. Demars, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University Medical School, New Orleans, LA
  • EInternship: Internal Medicine, Ochsner Foundation Hospital, New Orleans, LA
  • EResidency, Diagnostic Radiology: Louisiana State University Medical School, New Orleans, LA
  • EFellowship, Diagnostic Imaging: Parkland Hospital, Dallas, TX

William A. Gregoire, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University Medical School, New Orleans, LA
  • EResidency, Diagnostic Radiology: University of South Florida, Tampa, FL
  • EFellowship, Neuroradiology: University of South Florida, Tampa, FL
  • EMember: American Society of Neuroradiology, American Roentgen Ray Society, Radiological Society of North America, American College of Radiology

John A. Grezaffi, M.D.

  • EBoard-Certified: The American Board of Radiology, The American Board of Nuclear Medicine
  • EMD: Louisiana State University School of Medicine, New Orleans, LA
  • EInternship: Internal Medicine, Tulane Medical Center, New Orleans, LA
  • EResidency: Diagnostic Radiology, University of South Alabama, Mobile
  • EFellowship: Vascular/Interventional Radiology, Duke University, Durham, NC

Richard D. Hanson, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University Medical School, New Orleans, LA
  • EInternship: Ochsner Foundation Hospital, New Orleans, LA
  • EResidency: Ochsner Foundation Hospital, New Orleans, LA
  • EMember: American College of Radiology, Radiologic Society of North America

Adam W. Harris, M.D.

  • EBoard-Certified: The American Board of Radiology
  • EMD: Louisiana State University School of Medicine, New Orleans, LA
  • EMD: Internship: Internal Medicine, Louisiana State University Health Sciences Center
  • EResidency: Radiology, Vanderbilt University School of Medicine, Nashville, TN
  • EFellowship: Body Imaging, Baylor College of Medicine, Houston, TX

John P. Harris, M.D.

  • EBoard-Certified: The American Board of Radiology
  • EMD: Johns Hopkins University School of Medicine, Baltimore, MD
  • EInternship: Baylor College of Medicine Affiliated Hospitals, Houston, TX
  • EResidency, Diagnostic Radiology: Baylor College of Medicine Affiliated Hospitals, Houston, TX
  • EFellowship, Abdominal Imaging: Duke University Medical Center, Durham, NC
  • EMember: American College of Radiology, American Roentgen Ray Society

David J. Hoff, M.D.

  • EBoard-Certified: The American Board of Radiology
  • EMD: McGill University, Montreal, Quebec, Canada
  • EResidency: McGill University, Montreal, Quebec, Canada
  • EFellowship, Neuroradiology: University of Toronto, Toronto, Ontario, Canada
  • ESenior Member: American Society of Neuroradiology

Afshin Karimi, M.D., J.D., Ph.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Southern Illinois University School of Medicine
  • EInternship: Pediatrics, Southern Illinois University School of Medicine, Springfield, Illinois
  • EResidency: Diagnostic Radiology, The University of Illinois at Chicago College of Medicine, Chicago, Illinois
  • EFellowship: Magnetic Resonance Imaging, Radiology, University of California, Irvine School of Medicine, Irvine, CA
  • EMember: Radiological Society of North America

David Kirsch, M.D.

  • EBoard-Certified: The American Board of Radiology
  • EBoard-Certified: American Board of Radiology, with added qualifications in Vascular and Interventional Radiology
  • EMD: Louisiana State University Health Sciences Center, New Orleans, LA
  • EInternship 1: General Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA
  • EInternship 2: Pediatrics, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
  • EResidency: Diagnostic Radiology, Louisiana State University Health Sciences Center, New Orleans, LA
  • EResidency: Diagnostic Radiology, Tulane University Health Sciences Center, New Orleans, LA
  • EFellowship: Research - Cardiovascular and Interventional, Louisiana State University Health Sciences Center, New Orleans, LA
  • EFellowship: Vascular and Interventional Radiology, Baylor University Medical Center, Dallas, TX

James S. Lawton, III, M.D.

  • EBoard-Certified: The American Board of Radiology
  • EMD: Louisiana State University School of Medicine, New Orleans, LA
  • EInternship: Internal Medicine, Louisiana State University School of Medicine, New Orleans, LA
  • EResidency: Diagnostic Radiology, University of Alabama School of Medicine, Birmingham, AL
  • EFellowship: Musculoskeletal, University of Alabama School of Medicine, Birmingham, AL

Dane Mackey, M.D.

  • EBoard-Certified: American Board of Radiology, with added qualifications in Vascular and Interventional Radiology
  • EMD: Louisiana State University Health Sciences Center, New Orleans, LA
  • EInternship: Internal Medicine, Louisiana State University Health Sciences Center, New Orleans, LA
  • EResidency: Diagnostic Radiology, Louisiana State University Health Sciences Center, New Orleans, LA
  • EFellowship: Vascular and Interventional Radiology, Cleveland Clinic Foundation, Cleveland, Ohio
  • EMember: Radiological Society of Louisiana, National Guard Association of Louisiana, Society of Interventional Radiology, Radiological Society of North America, American Medical Association, American College of Physicians, American College of Radiology

Andrew Claiborne Matthews, M.D.

  • EBoard Certified: American Board of Radiology
  • EMD: Louisiana State University Health Sciences Center, New Orleans, LA
  • EInternship: Ochsner Clinic Foundation, New Orleans, LA
  • EResidency: Diagnostic Radiology, Ochsner Clinic Foundation, New Orleans, LA
  • EFellowship: Neuroradiology, Medical University of South Carolina, Charleston, SC
  • EMember: American Society of Neuroradiology, Radiological Society of Louisiana, American College of Radiology, American Medical Association

Blake B. May, M.D.

  • EBoard-Certified: The American Board of Radiology
  • EMD: Louisiana State University School of Medicine, New Orleans, LA
  • EInternship: Internal Medicine, University of Mississippi Medical Center, Jackson, MS
  • EResidency: Diagnostic Radiology, University of Mississippi Medical Center, Jackson, MS
  • EFellowship: Body Imaging, University of Mississippi Medical Center, Jackson, MS

Karl M. Nettles Jr., M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University Health Sciences Center, New Orleans, LA
  • EInternship, Internal Medicine: Earl K. Long Hospital – Louisiana State University, Baton Rouge, LA
  • EFellowship, Neuroradiology, University of Texas Southwestern Medical Center, Dallas, Texas
  • EMember: American College of Radiology, American Society of Neuroradiology

R. Reece Newsome, Sr., M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Vanderbilt University School of Medicine, Nashville, TN
  • EResidency, Diagnostic Radiology: Tulane University School of Medicine, New Orleans, LA
  • EFellowship, Musculoskeletal: Tulane University School of Medicine, New Orleans, LA
  • EMember: American College of Radiology, Radiological Society of North America, National Medical Association

David P. Nussbaummer III, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: University of Tennessee College of Medicine, Memphis, TN
  • EInternship, Categorized Medicine: Methodist Hospital, Memphis, TN
  • EResidency, Diagnostic Radiology: Methodist Hospital, Memphis, TN
  • EMember: American College of Radiology, Radiological Society of North America, East Baton Rouge Parish Medical Society

John D. Sparks, M.D.

  • EBoard-Certified: American Board of Radiology
  • EMD: Louisiana State University Medical Center, New Orleans, LA
  • EInternship: Louisiana State University Medical Center, New Orleans, LA
  • EResidency: Louisiana State University Medical Center, New Orleans, LA

“Timothy” Sang-Ting Tsai, M.D.

  • EBoard-Certified: American Board of Radiology
  • ECertificate of Advanced Qualification: Pediatric Radiology
  • EMD: Louisiana State University Medical School, New Orleans, LA
  • EInternship: Baylor College of Medicine, Houston, TX
  • EFellowship, Pediatric Radiology: Children’s Hospital, Cincinnati, OH
  • EMember: Radiological Society of North America, American Roentgen Ray Society, Society of Pediatric Radiology

Your Physicians Assitants

Meet Our PAs

Case A. Rappelet, PA-C

  • EBoard Certified: National Commission on Certification of Physician Assistants
  • EPA: Bachelor of Science/Physician Assistant, Louisiana State University, Shreveport, LA
  • EBachelor of Science/Radiologic Technology, University of Louisiana-Monroe, Monroe, LA
  • EAssociate of Science/Radiologic Technology, Delgado Community College, New Orleans, LA
  • ECertification: American Registry of Radiologic Technologists
  • EMember: American Academy of Physician Assistants, Louisiana Academy of Physician Assistants, American Society of Radiologic Technologist

Casey W. Courtney, MS, PA-C

  • EBoard Certified: National Commission on Certification of Physician Assistants
  • EPA: Master of Medical Science in Physician Assistant, Our Lady of the Lake College, Baton Rouge, LA
  • EBachelor of Science in Health Sciences, Our Lady of the Lake College, Baton Rouge, LA
  • EAssociate of Science in Radiologic Technology, Our Lady of the Lake College, Baton Rouge, LA
  • ECertification: American Registry of Radiologic Technologists
  • EMember: American Academy of Physician Assistants, Louisiana Academy of Physician Assistants, American Society of Radiologic Technologist

Matthew P. Ivanyisky, MS, PA-C

  • EBoard Certified: National Commission on Certification of Physician Assistants
  • EPA: Master of Medical Science in Physician Assistant, Our Lady of the Lake College, Baton Rouge, LA
  • EAssociate of Science in Radiologic Technology, Baton Rouge General Medical Center, Baton Rouge, LA
  • ECertification: American Registry of Radiologic Technologists
  • EMember: American Academy of Physician Assistants, Louisiana Academy of Physician Assistants