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AARON BRADLEY KLASSEN
NPI 1750745428
Emergency Medicine in Rochester, MN

Active since April 08, 2016PECOS EnrolledAccepts Medicare Assignment
200 1ST ST SW, ROCHESTER, MN 55905(507) 284-2511 Get Directions Write a Review

NPPES record last updated: September 29, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2020, Sep 5, 2018 (2 updates tracked since 2018).

About Aaron Bradley Klassen NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

AARON BRADLEY KLASSEN (NPI 1750745428) is an individual emergency medicine provider in Rochester, Minnesota, licensed in Minnesota (62563) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1750745428
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameAARON BRADLEY KLASSEN
Location Address200 1ST ST SWRochester, MN 55905
Mailing Address200 1st St SwRochester, MN 55905-0001 · (507) 284-2511
Phone(507) 284-2511
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateApril 8, 2016
Last NPPES UpdateSeptember 29, 20202 updates tracked since enumeration
NPPES CertifiedSeptember 29, 2020
✔ NPI 1750745428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MN · 62563
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
200 1ST ST SW, Rochester, MN 55905
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Aaron Bradley Klassen is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638461163
PECOS Enrollment IDI20170801000571
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

8

Medicare enrollment records show Aaron Klassen reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayo Clinic
Same address
Infectious Disease
200 1ST ST SW
Rochester, MN 55905
  • Reassigned Medicare billing, Minnesota enrollment
  • 6,534 clinicians in this Medicare group
NPI 1114343860 (507) 284-2511
Mayo Clinic Health System-Lake City
31 mi
Critical Access
500 W GRANT ST
Lake City, MN 55041
  • Reassigned Medicare billing, Minnesota enrollment
  • Also billed through NPI 1164463659 (Minnesota)
  • 675 clinicians in this Medicare group
NPI 1538113022 (651) 345-3321
Mayo Clinic Health System-Southeast Minnesota Region
35 mi
Multi-Specialty
701 HEWITT BLVD
Red Wing, MN 55066
  • Reassigned Medicare billing, Minnesota enrollment
  • Also billed through NPI 1063435410 (Minnesota)
  • 1,571 clinicians in this Medicare group
NPI 1114453883 (651) 267-5000
Mayo Clinic Health System-Southwest Minnesota Region
52 mi
Multi-Specialty
501 STATE ST N
Waseca, MN 56093
  • Reassigned Medicare billing, Minnesota enrollment
  • Also billed through NPI 1740256668 (Minnesota), NPI 1124035282 (Minnesota)
  • 1,572 clinicians in this Medicare group
NPI 1518494251 (507) 835-1210
Mayo Clinic Health System-Southwest Wisconsin Region, Inc.
63 mi
Multi-Specialty
800 WEST AVE S
La Crosse, WI 54601
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1841278637 (Wisconsin)
  • 1,003 clinicians in this Medicare group
NPI 1629056049 (608) 392-3861
Mayo Clinic Health System-Northwest Wisconsin Region, Inc.
66 mi
Multi-Specialty
2321 STOUT RD
Menomonie, WI 54751
NPI 1235666967 (715) 235-5531
Mayo Clinic Health System-Fairmont
103 mi
Multi-Specialty
800 MEDICAL CENTER DR
Fairmont, MN 56031
  • Reassigned Medicare billing, Minnesota enrollment
  • 806 clinicians in this Medicare group
NPI 1366410862 (507) 238-8100
Mayo Clinic Health System-St James
107 mi
Critical Access
1101 MOULTON AND PARSONS DR
Saint James, MN 56081
  • Reassigned Medicare billing, Minnesota enrollment
  • Also billed through NPI 1023177730 (Minnesota)
  • 390 clinicians in this Medicare group
NPI 1639198732 (507) 375-3261

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
162 services162 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
63 services62 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
25 services25 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mayo Clinic Hospital Rochester

Acute Care Hospitals · Rochester, MN
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number240010
Location1216 Second Street SouthwestRochester, MN 55902 · Olmsted County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55905 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.82 typical visit price
range $56.00 – $168.28
Typical copayment $21.45 (range $14.00 – $42.07)
Most-billed visit code 99203
Established Patient
$98.61 typical visit price
range $18.32 – $138.04
Typical copayment $24.65 (range $4.58 – $34.51)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EMILY LEASURE MD
Internal Medicine
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
NATHANAEL BAILEY
Pathology (Clinical Pathology/Laboratory Medicine)
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
NICOLE S NIPPER NP
Nurse Practitioner
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
BRANDI D'SOUZA NP
Nurse Practitioner
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
DR. JODI M. MOORE-WEISS OD
Optometrist
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
JENNIFER L KERKVLIET MA
Psychologist
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
EMMANUEL J LUJERO CRNA
Nurse Anesthetist, Certified Registered
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
JUAN PABLO BRITO CAMPANA M.D
Internal Medicine (Endocrinology, Diabetes & Metabolism)
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aaron Klassen's NPI number?

The NPI number for Aaron Klassen is 1750745428. It was assigned to this individual provider in the NPPES registry on April 8, 2016.

Where is Aaron Klassen located?

Aaron Klassen practices at 200 1st St SW, Rochester, MN 55905. The listed phone number is (507) 284-2511.

What is Aaron Klassen's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Aaron Klassen enrolled in Medicare?

Yes. Aaron Klassen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Aaron Klassen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Klassen reassigns Medicare benefits to 8 organizations: Mayo Clinic (Rochester, MN), Mayo Clinic Health System-Lake City (Lake City, MN), Mayo Clinic Health System-Southeast Minnesota Region (Red Wing, MN), Mayo Clinic Health System-Southwest Minnesota Region (Waseca, MN), Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (La Crosse, WI) and 3 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Klassen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Aaron Klassen affiliated with any hospitals?

According to CMS data, Aaron Klassen is affiliated with Mayo Clinic Hospital Rochester.

When was this NPI record last updated?

The NPPES record for Aaron Klassen was last updated on September 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.