Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Thorvardur R Halfdanarson, MD

Individual provider Internal Medicine Physician · NPI 1083684187

Dr. Thorvardur R Halfdanarson, MD is a Medical Oncology in Rochester, Minnesota. Qualified in 1995, 31 years ago. Practices with Mayo Clinic, a 4,796-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Arizona, Iowa and Minnesota.

Years since qualifying
31
Licensed in
AZ, IA, MN
In the registry since
2006
Specialties on file
6
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

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 13400 E Shea Blvd, Scottsdale, AZ 85259-5452 — (480) 301-8000

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 45995 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 45995 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 37199 (IA)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 37199 (IA)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 46666 (AZ)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 45995 (MN)

Record details

NPI number1083684187
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 23, 2006
Last updated in NPPESAugust 14, 2020
Certification dateAugust 14, 2020

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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