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
Darryl G. DeMaris, M.D.
- EBoard-Certified: American Board of Radiology
- EBoard-Certified: Interventional Radiology and Diagnostic Radiology
- EMD: Louisiana State University Health Sciences Center, New Orleans, LA
- EInternship: General Surgery, Tulane University, New Orleans, LA
- EResidency Diagnostic Radiology: Baylor Scott & White Medical Center, Temple, Texas & Texas A & M College of Medicine, College Station, Texas
- EFellowship, Interventional Radiology: Baylor Scott & White Medical Center, Temple, Texas & Texas A & M College of Medicine, College Station, Texas
- EMember: Society of Interventional Radiology
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
Sarah Smart Gay Frischhertz, M.D.
- EBoard-Certified: American Board of Radiology
- EMD: Louisiana State University Medical School, New Orleans, LA
- EInternship: Internal Medicine, Ochsner Clinic Foundation, New Orleans, LA
- EResidency, Diagnostic Radiology: Ochsner Clinic Foundation, New Orleans, LA
- EFellowship: Interventional Radiology, MD Anderson Cancer Center, Houston, TX
- EMember: Society of Interventional Radiology, American College of Radiology, Radiological Society of North America, American Medical Association, Louisiana State Medical Society.
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
Robert L. Harrold, III, M.D.
- EBoard-Certified: The American Board of Radiology
- EMD: The University of Queensland with Ochsner Clinical School, Herston, Queensland & New Orleans, LA
- EInternship: Internal Medicine, Ochsner Clinic Foundation, New Orleans, LA
- EResidency, Diagnostic Radiology: Ochsner Clinic Foundation, New Orleans, LA
- EFellowship, Musculoskeletal Imaging: Alabama Orthopedic Imaging
- EMember: Radiological Society of North America, Radiological Society of Louisiana, American College of Radiology, American College of Physicians, Louisiana State Medical 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
Kara B. Marcantel, 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 Medical Center, New Orleans, LA
- EResidency: Diagnostic Radiology, University of South Florida, Tampa, Florida Lenox Hill Hospital, New York, New York
- EMember: American College of Radiology
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
Christopher L. Rouse, M.D.
- EBoard-Certified: American Board of 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: Neuroradiology, Louisiana State University Health Sciences Center, New Orleans, LA
- EMember: Radiological Society of North America, American College of Radiology, American Roentgen Ray Society, American Society of Neuroradiology, American Society of Head and Neck Radiology, American Society of Functional Neuroradiology.
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