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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Donald Longjohn:

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  1. Qualifications
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Patient Reviews

Patient comments (9)

The overall average patient rating of Dr. Donald Longjohn is Excellent. Dr. Longjohn has been reviewed by 22 patients who have provided 9 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.4
Promptness 4.5
Courteous Staff 4.4
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Donald Longjohn, MD is board certified in Orthopaedic Surgery.

  • He has special expertise in 7 areas:
  • Arthritis
  • Hip Osteoarthritis
  • Hip Surgery (Hip Replacement Arthroplasty)
  • Knee Osteoarthritis
  • Knee Surgery (Knee Replacement Arthroplasty)
  • Osteoarthritis (Hand and Wrist)
  • Rheumatoid Arthritis

Education & Awards

Dr. Longjohn graduated from University of Michigan Medical School, Ann Arbor. He has 8 awards.

"Doctor of the Year" Rancho Los Amigos National Rehabilitation Center
Full-time Clinical Faculty Teaching Award, USC Dept. of Orthopaedic Surgery, presented by the Senior Class of 2003
Outstanding Teacher in Year I, Presented by the USC Keck School of Medicine Class of 2008
Commendation from the LA County Board of Supervisors, presented by Supervisor Don Knabe, 2003
Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2008 - 2011, 2013 - 2014)
Compassionate Doctor Recognition (2011, 2013)
On-Time Doctor Award (2014)


Dr. Longjohn has 4 hospital affiliations:

  • USC University Hospital 
  • USC Norris Cancer Hospital 


  • English

> > > > Dr. Donald Longjohn, MD

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Additional Information
Dr. Donald B Longjohn MD is a male Orthopaedic Surgeon, has 21 years of experience and practices in Orthopaedic Surgery.
Where does Dr. Donald B. Longjohn practice?
Dr. Donald Longjohn has 1 office location.
Dr. Donald Longjohn practices Orthopaedic Surgery near Los Angeles, CA.
See Los Angeles Surgeons.