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).

Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Patrick Johnston is Excellent. Dr. Johnston has been reviewed by 3 patients who have provided 0 comments. The rating is 5 out of 5 stars.

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

Specialties & Research

Dr. Patrick Johnston, MD, PHD is board certified in Hematology.

  • He has special expertise in 13 areas:
  • Acute Myeloid Leukemia
  • Adult T-Cell Leukemia-Lymphoma
  • Bone Marrow and Lymphatic Tissue Cancer (Hematologic Neoplasm)
  • Chronic B-Cell Lymphocytic Leukemia
  • Deep Vein Thrombosis
  • Diffuse Large B-Cell Lymphoma
  • Hepatitis C
  • Hodgkin Disease
  • Leukemia
  • Lymphoma
  • Melanoma
  • Myeloid Leukemia
  • Non-Hodgkin Lymphoma

Education & Awards

Dr. Johnston graduated from University of Alabama at Birmingham.


Dr. Johnston has 4 hospital affiliations:

  • St Marys Hospital - Rochester 
  • Rochester Methodist Hospital 

> > > > Dr. Patrick Johnston, MD, PHD

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Additional Information
Dr. Patrick B Johnston MD and PHD is a male Internist, has 16 years of experience and practices in Internal Medicine and Hematology.
Where does Dr. Patrick B. Johnston practice?
Dr. Patrick Johnston has 11 office locations.
Dr. Patrick Johnston practices Internal Medicine and Hematology near Austin, MN.
Additional practice locations include: Rochester, MN and Albert Lea, MN.
See Austin Internists and Austin Hematologists.