Peter A. Najjar

Dr. Peter A. Najjar

Colorectal Surgery
Johns Hopkins Medicine
Johns Hopkins Outpatient Center
601 North Caroline Street, Floor 8, Floor 8, 
Baltimore, MD 

Johns Hopkins Medicine
Johns Hopkins Outpatient Center
601 North Caroline Street, Floor 8, Floor 8, 
Baltimore, MD 
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Overview

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.

His top areas of expertise are Familial Colorectal Cancer, Anal Cancer, Anorectal Abscess, Ileostomy, and Fasciotomy.

His clinical research consists of co-authoring 26 peer reviewed articles. MediFind looks at clinical research from the past 15 years.

Graduate Institution
Harvard School Of Arts And Sciences, MBA, 2016
Residency
Brigham and Women's Hospital, General Surgery, 2019
Specialties
Colorectal Surgery
Licenses
Surgery in MD
Board Certifications
American Board Of Colon And Rectal Surgery
American Board Of Surgery
Fellowships
Brigham and Women's Hospital, Colorectal Surgery, 2020
Harvard Medical School, Quality and Patient Safety, 2016
Hospital Affiliations
The Johns Hopkins Hospital
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
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  • HMO
  • PPO
First Health
  • INSURANCE PLAN
  • MEDICARE PDP
  • PPO
Geisinger
  • HMO
  • POS
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Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
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Locations

Johns Hopkins Outpatient Center
601 North Caroline Street, Floor 8, Floor 8, Baltimore, MD 21287
Call: 443-997-1508

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


26 Total Publications

Responsible Development of Artificial Intelligence in Surgery.
Responsible Development of Artificial Intelligence in Surgery.
Journal: JAMA surgery
Published: November 05, 2025
View All 26 Publications
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Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

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        • Experienced
        • Anal Cancer
          Dr. Najjar is
          Experienced
          . Learn about Anal Cancer.
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        • Anorectal Abscess
          Dr. Najjar is
          Experienced
          . Learn about Anorectal Abscess.
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        • Compartment Syndrome
          Dr. Najjar is
          Experienced
          . Learn about Compartment Syndrome.
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        • Familial Colorectal Cancer
          Dr. Najjar is
          Experienced
          . Learn about Familial Colorectal Cancer.
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        • Fasciotomy
          Dr. Najjar is
          Experienced
          . Learn about Fasciotomy.
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        • Gastroesophageal Junction Cancer
          Dr. Najjar is
          Experienced
          . Learn about Gastroesophageal Junction Cancer.
          See more Gastroesophageal Junction Cancer experts
        View All 10 Experienced Conditions
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