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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. Royal Johnson:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. Royal Johnson is Below Average. Dr. Johnson has been reviewed by 3 patients who have provided 1 comments. The rating is 2 out of 5 stars.

Patient Ratings
Ease of Appointment 2.3
Promptness 2.8
Courteous Staff 3.2
Accurate Diagnosis 1.9
Bedside Manner 2.3
Spends Time with Me 2.3
Follows Up After Visit 3.0

Specialties & Research

  • He has special expertise in 1 area:
  • Alzheimer's Disease

Education & Awards

Dr. Johnson graduated from East Carolina University, Greenville.


Dr. Johnson has 2 hospital affiliations:

  • Straub Clinic and Hospital 
  • Maui Memorial Hospital 

> > > > Dr. Royal Johnson, MD

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Additional Information
Dr. Royal G Johnson MD is a male Internist, has 26 years of experience and practices in Internal Medicine and Geriatric Medicine.
Where does Dr. Royal G. Johnson practice?
Dr. Royal Johnson has 1 office location.
Dr. Royal Johnson practices Internal Medicine and Geriatric Medicine near Hilo, HI.
See Hilo Internists and Hilo Geriatric Doctors.