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Pamela T Johnson, M.D.

Photo of Dr. Pamela T Johnson, M.D.

Vice Chair of Quality and Safety, Department of Radiology

Associate Professor of Radiology and Radiological Science


Expertise: Diagnostic Radiology

Research Interests: Multidetector row CT; Protocol design and interpretation

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The Johns Hopkins Hospital (Main Entrance)
Appointment Phone: 443-997-7237

1800 Orleans St.
Sheikh Zayed Tower
Baltimore, MD 21287 map
Phone: 410-955-9446

Johns Hopkins Outpatient Center
Appointment Phone: 443-997-7237

601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 410-955-9446


Dr. Pamela T. Johnson is an Associate Professor in the Johns Hopkins Medicine Department of Radiology and Radiological Science, Vice Chair of Quality and Safety and the Radiology Residency Program Director. Her area of expertise is Body CT, and her research interests include protocol design to optimize multidetector row CT and performance improvement for vascular and oncologic imaging.

Dr. Johnson is also actively involved in advancing high value practice at Johns Hopkins as the Director of Appropriate Imaging in the Department of Radiology and the Co-Director of the Johns Hopkins Health System High Value Care Committee. Nationally, she chairs the American College of Radiology Choosing Wisely® Working Group and is the founder and co-director of the High Value Practice Academic Alliance (, a consortium of nearly 90 academic medical centers collaborating on high value care quality improvement, research and education.

Dr. Johnson graduated Cum Laude from Harvard University in 1987 and earned her medical degree as a member of AOA from Thomas Jefferson University in Philadelphia, PA in 1991. She completed her residency at The Johns Hopkins Hospital where she was elected Chief Resident and performed a fellowship in ultrasound, computed tomography (CT), and magnetic image resonance imaging (MRI) at Jefferson University Hospital. Dr. Johnson joined the Johns Hopkins faculty in 2005.

Dr. Johnson is a member of the Radiologic Society of North America, the American Roentgen Ray Society, the Association of University Radiologists, the Society of Abdominal Radiology and the American College of Radiology. more


  • Vice Chair of Quality and Safety, Department of Radiology
  • Residency Program Director, Department of Radiology
  • Director of Appropriate Imaging, Department of Radiology
  • Associate Professor of Radiology and Radiological Science

Departments / Divisions



  • MD, Jefferson Medical College of Thomas Jefferson University (1991)


  • Johns Hopkins University School of Medicine / Radiology (1996)


  • Thomas Jefferson University Hospital / Ultrasound (1997)

Board Certifications

  • American Board of Radiology / Diagnostic Radiology (1996)

Research & Publications

Selected Publications

Northcutt BG, Raman SP, Long C, Oshmyansky AR, Siegelman SS, Fishman EK, Johnson PT. "MDCT of Adrenal Masses: Can Dual-Phase Enhancement Patterns Be Used to Differentiate Adenoma and Pheochromocytoma?" AJR Am J Roentgenol. 2013 Oct;201(4):834-9. doi: 10.2214/AJR.12.9753.
PMID: 24059372 [PubMed - in process]
Select item 24059362

Chu LC, Johnson PT, Cameron DE, Fishman EK. "MDCT Evaluation of Aortic Root Surgical Complications." AJR Am J Roentgenol. 2013 Oct;201(4):736-44. doi: 10.2214/AJR.12.10010.
PMID: 24059362 [PubMed - in process]
Select item 23770125

Kruse MJ, Johnson PT, Fishman EK, Zimmerman SL. "Aortic intramural hematoma: Review of high-risk imaging features."J Cardiovasc Comput Tomogr. 2013 May 10. doi:pii: S1934-5925(13)00105-6. 10.1016/j.jcct.2013.04.001. [Epub ahead of print]
PMID: 23770125 [PubMed - as supplied by publisher]
Select item 23642881

Mahesh M, Johnson PT, Fishman EK. "Dual-energy CT: is it ready for prime time?" J Am Coll Radiol. 2013 May;10(5):383-5. doi: 10.1016/j.jacr.2013.02.001. No abstract available.
PMID: 23642881 [PubMed - in process]
Select item 23601445

Pierorazio PM, Hyams ES, Tsai S, Feng Z, Trock BJ, Mullins JK, Johnson PT, Fishman EK, Allaf ME. "Multiphasic enhancement patterns of small renal masses (≤4 cm) on preoperative computed tomography: utility for distinguishing subtypes of renal cell carcinoma, angiomyolipoma, and oncocytoma." Urology. 2013 Jun;81(6):1265-71. doi: 10.1016/j.urology.2012.12.049. Epub 2013 Apr 17.
PMID: 23601445 [PubMed - indexed for MEDLINE]
Select item 23452995

Johnson PT, Alvin MD, Ziegelstein RC. Transitioning to a High Value Health Care Model: Academic Accountability. Acad Med. 2017 Nov 1. [Epub ahead of print]

Johnson PT, Mahesh M, Fishman EK. Image wisely and choosing wisely: Importance of adult body CT protocol design for patient safety, exam quality, and diagnostic efficacy. J Am Coll Radiol 2015; 12:1185-1190.

Activities & Honors


  • AOA, Elected in Junior Year, Jefferson Medical College, 1990
  • Outstanding Intern Award, Presbyterian Medical Center, Internal Medicine Internship, 1992
  • Chief Resident, Johns Hopkins Hospital, Radiology Residency, 1995 - 1996
  • Homar Branch Award for outstanding fellow, Thomas Jefferson University Hospital, Ultrasound/CT/MRI Fellowship, 1997
  • Radiology Editors Award for Distinction in reviewing, 1997
  • Radiology Editors Award for Distinction in reviewing, 1998
  • Radiology Editors Award for Distinction in reviewing, 1999
  • Radiology Editors Award for Distinction in reviewing, 2002
  • Radiology Editors Award for Distinction in reviewing, 2007
  • Most Effective Radiology Educator Award, Aunt Minnie, 2016
  • Best Radiologist Training Program, Aunt Minnie, 2015
  • Innovations in Clinical Care Award for High Value Care Committee, Johns Hopkins Hospital, 2017


  • American College of Radiology, 1997
  • American Roentgen Ray Society, 1992
  • Association of University Radiologists, 2014
  • Radiologic Society of North America, 1992
  • Society of Abdominal Radiology, 2014

Videos & Media

Recent News Articles and Media Coverage

Unnecessary Medicine. US News and World Report. November 17, 2017

Creating Leadership Roles for Integrating Value into Academic Medical Programs. Academic Medicine Blog. November 16, 2017

ACR Issues New Choosing Wisely Recommendations. ACR Bulletin. November 2017.

Low Value Care Persists 5 years into Choosing Wisely Campaign. Modern Healthcare. October 24, 2017.

Group Hosts High Value Healthcare Conference. Aunt Minnie. October 23, 2017.

Johns Hopkins Tackles Problem of Unnecessary Scans. Aunt Minnie. June 29, 2017. 

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