Doctor profile · Federal record

Dr. Aaron Mansfield, MD

Medical Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Hematology & Oncology Physician · Rochester, MN

  • NPI 1437278959
  • Accepts Medicare
  • 20 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
200 1St St Sw
Rochester, MN 559050001
(507) 284-2511

Credentials & registration

NPPES · NUCC
NPI registered
March 2007 — 19 yrs on file
Profile last updated
August 18, 2020
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State license (1)
Minnesota #49800

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1437278959. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
26,390
Distinct HCPCS
10
Medicare allowed
$681,075
HCPCS Description Services Patients Avg allowed
J9271 Injection, pembrolizumab, 1 mg 7,400 26 $49
J1453 Injection, fosaprepitant, 1 mg 4,350 21 $0
J9299 Injection, nivolumab, 1 mg 4,000 12 $30
J9267 Injection, paclitaxel, 1 mg 3,756 23 $0
J9144 Injection, daratumumab, 10 mg and hyaluronidase-fihj 3,063 14 $47
J9041 Injection, bortezomib, 0.1 mg 895 12 $6
J1100 Injection, dexamethasone sodium phosphate, 1 mg 718 54 $0
J2405 Injection, ondansetron hydrochloride, per 1 mg 672 55 $0
J0640 Injection, leucovorin calcium, per 50 mg 203 12 $4
J2469 Injection, palonosetron hcl, 25 mcg 200 16 $1

In context: peer comparison

Among 30 peers in this city , average services per provider: 717. This provider delivers 37× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$3,997
Transactions
4
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
ABBVIE INC. 3 $3,950.29
Genentech USA, Inc. 1 $46.49

By nature of payment

Consulting Fee
$3,888
Food and Beverage
$109

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
52
Patients
0
Total drug cost
$947,358
Drug Type Claims Patients Total cost
Alecensa (Alectinib Hcl) Brand 19 0 $331,031
Tagrisso (Osimertinib Mesylate) Brand 19 0 $289,321
Xalkori (Crizotinib) Brand 14 0 $327,007

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Aaron Mansfield's medical specialty?
Dr. Aaron Mansfield practices Medical Oncology Physician in Rochester, MN.
Where does Dr. Aaron Mansfield practice?
Dr. Aaron Mansfield practices at 200 1St St Sw, Rochester, MN 559050001. Office phone: 5072842511.
What is Dr. Aaron Mansfield's NPI?
Dr. Aaron Mansfield's National Provider Identifier (NPI) is 1437278959, issued by NPPES.
Does Dr. Aaron Mansfield accept Medicare assignment?
Yes. Dr. Aaron Mansfield accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Aaron Mansfield commonly perform?
Top Medicare-reported procedures in 2023: Injection, pembrolizumab, 1 mg (HCPCS J9271); Injection, fosaprepitant, 1 mg (HCPCS J1453); Injection, nivolumab, 1 mg (HCPCS J9299). Source: CMS Medicare Physician & Other Practitioners file.