Physician Profile
Unclaimed ProfileAbout HALFDANARSON
Based in Rochester, MN, Thorvardur R Halfdanarson, M.D. is listed in the NPI registry under medical oncology. Thorvardur is also listed as specializing in internal medicine and hematology & oncology. Medicare claims data shows Thorvardur provided 31,009 services to 1,160 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (507) 284-2511
- Email not available
Practice Locations
200 1ST ST SW
Rochester, MN 55905
Procedures Most Often Billed to Medicare
31,009 services · 1,160 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of additional new drug or substance into vein | Treatment | 96375 |
286 |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
200 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
84 |
| Administration of additional new drug or substance into vein, 1 hour or less | Treatment | 96417 |
69 |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
64 |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | Treatment | 96367 |
43 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
30 |
| Injection, pembrolizumab, 1 mg | Drug given | J9271 |
8,000 |
| Injection, daratumumab, 10 mg and hyaluronidase-fihj | Drug given | J9144 |
5,760 |
| Injection, fosaprepitant, 1 mg | Drug given | J1453 |
4,350 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other medical oncology specialists in Rochester 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1995 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of additional new drug or substance into vein 8
Providers in MN who bill this service to Medicare most often.
Common questions
What does Dr. Halfdanarson specialize in?
Dr. Halfdanarson is a medical oncology in Rochester, MN. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “MEDICAL ONCOLOGY”.
NPI registry
Where is Dr. Halfdanarson located?
Dr. Halfdanarson is listed at 200 1ST ST SW, Rochester, MN 55905. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Halfdanarson's phone number?
The number on file is (507) 284-2511. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Halfdanarson?
Dr. Halfdanarson's National Provider Identifier is 1083684187. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Halfdanarson go to medical school?
Dr. Halfdanarson attended Other, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Halfdanarson have?
Dr. Halfdanarson has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Halfdanarson do most often?
According to Medicare billing data, Dr. Halfdanarson provides treatments such as injection of additional new drug or substance into vein and administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Halfdanarson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Halfdanarson. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.