Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Stephen Shepherd Johnston, MD

Individual provider Diagnostic Radiology Physician · NPI 1730525841

Stephen Shepherd Johnston, MD is a Diagnostic Radiology in Tucson, Arizona. Graduated from University of Arizona College of Medicine in 2013, 13 years ago. Practices with UNC Physicians Network LLC, a 986-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona, Florida and Louisiana.

Years since qualifying
13
Trained at
University of Arizona College of Medicine
Licensed in
AZ, FL, LA
In the registry since
2013
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2492 E River Rd
Tucson, AZ 85718-9552
Phone: (520) 722-8994
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4250 Hospital Dr, Marianna, FL 32446-1917 — (850) 526-2200

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence R73777 (AZ)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 330999 (LA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence ME170763 (FL)

Record details

NPI number1730525841
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 15, 2013
Last updated in NPPESFebruary 6, 2026
Certification dateFebruary 6, 2026
Mailing address2492 E River Rd, Tucson, AZ 85718-9552

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Unc Physicians Network Llc — 986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations21 on file with Medicare

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