Peter Anton Najjar, M.D., M.B.A.

Headshot of Peter Anton Najjar
  • Medical Director for Clinical Operations, Armstrong Institute for Patient Safety & Quality
  • Assistant Professor of Surgery


Colon and Rectal Surgery

Research Interests

Clinical innovation; improving the quality and safety of patient care more

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Insurance Information

Main Phone

Outside of Maryland & Washington D.C.

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International Patients

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The Johns Hopkins Hospital

Appointment Phone: 443-997-1508
600 N. Wolfe Street
Baltimore, MD 21287 map

Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)

Appointment Phone: 443-997-1508
601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 443-997-1508


Peter A. Najjar, M.D., M.B.A., is a surgeon with specialization in colon and rectal surgery. He earned his medical degree from the University of Chicago and completed his surgical residency and colorectal fellowship at Harvard's Brigham and Women’s Hospital/Dana-Farber Cancer Institute in Boston.

He offers advanced colorectal care including robotic and laparoscopic approaches for benign and malignant disease. In addition to his clinical experience, Dr. Najjar received a Master of Business Administration from Harvard Business School and completed the Harvard Medical School Fellowship in Quality and Patient Safety.  He works with the health system to protect patients from harm, improve their outcomes and experiences, and eliminate disparities. Dr. Najjar’s research focuses on making care safe, affordable, and patient-centered from the clinic to the operating room. more


  • Medical Director for Clinical Operations, Armstrong Institute for Patient Safety & Quality
  • Assistant Program Director, Johns Hopkins Medicine Health Systems Management Fellowship
  • Assistant Professor of Surgery

Departments / Divisions

Centers & Institutes



  • MD; University of Chicago Pritzker School of Medicine (2011)


  • General Surgery; Brigham and Women's Hospital (2019)


  • Brigham and Women's Hospital (2016)
  • Colorectal Surgery; Brigham and Women's Hospital (2020)

Board Certifications

  • American Board of Surgery (General Surgery) (2019)

Research & Publications

Activities & Honors


  • Brigham and Women’s Hospital Safety Matters Award - 2017
  • Brigham and Women’s Hospital Partners in Excellence Award - 2017
  • Harvard Medical School Excellence in Surgical Research - 2016
  • Harvard Medical School Excellence in Teaching - 2014
  • Harvard Business School Robert S. Kaplan Life Sciences Fellowship - 2014


  • American College of Surgeons
  • American Society of Colon & Rectal Surgeons

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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