Doctor profile · Federal record

Dr. Aaron Klassen

Emergency Medicine Physician (CMS: Emergency Medicine) · Student in an Organized Health Care Education/Training Program · Rochester, MN

  • NPI 1750745428
  • Accepts Medicare
  • 10 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
200 1St St Sw
Rochester, MN 55905
(507) 284-2511

Credentials & registration

NPPES · NUCC
NPI registered
April 2016 — 10 yrs on file
Profile last updated
September 29, 2020
Year of graduation
2016 — 10 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Minnesota #62563

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1750745428. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
298
Distinct HCPCS
4
Medicare allowed
$44,895
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 177 175 $167
99284 Emergency department visit with moderate level of medical decision making 88 87 $116
99291 Critical care, first 30-74 minutes 21 21 $206
99283 Emergency department visit with low level of medical decision making 12 12 $68

In context: peer comparison

Among 41 peers in this city , average services per provider: 84. This provider delivers 3.5× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Aaron Klassen's medical specialty?
Dr. Aaron Klassen practices Emergency Medicine Physician in Rochester, MN.
Where does Dr. Aaron Klassen practice?
Dr. Aaron Klassen practices at 200 1St St Sw, Rochester, MN 55905. Office phone: 5072842511.
What is Dr. Aaron Klassen's NPI?
Dr. Aaron Klassen's National Provider Identifier (NPI) is 1750745428, issued by NPPES.
Does Dr. Aaron Klassen accept Medicare assignment?
Yes. Dr. Aaron Klassen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Aaron Klassen commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.