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

Joshua Ryan Niska, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1811307333

Joshua Ryan Niska, MD is a Radiation Oncology in Phoenix, Arizona. Graduated from Harvard Medical School in 2014, 12 years ago. Practices with Mayo Clinic Arizona, a 1,616-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Arizona.

Years since qualifying
12
Trained at
Harvard Medical School
Licensed in
AZ
In the registry since
2014
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

5777 E Mayo Blvd
Phoenix, AZ 85054-4502
Phone: (480) 515-6296
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 50869 (AZ)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 50869 (AZ)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1811307333
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 6, 2014
Last updated in NPPESSeptember 17, 2024
Certification dateSeptember 17, 2024

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 2014 (12 years in practice)
Group practice Mayo Clinic Arizona — 1616 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Phoenix