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DR. AARON MICHAEL HASENKRUG M.D.
NPI 1720510050
Surgery in Great Falls, MT

Active since March 27, 2017PECOS EnrolledAccepts Medicare Assignment
88.15/100
CMS Quality Rating
400 13TH AVE S STE 102, GREAT FALLS, MT 59405(406) 731-8888(406) 731-8318 Get Directions Write a Review

NPPES record last updated: May 22, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 7, 2023, Mar 27, 2017 (2 updates tracked since 2017).

About Dr. Aaron Michael Hasenkrug M.d. NPPES

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

DR. AARON MICHAEL HASENKRUG M.D. (NPI 1720510050) is an individual surgery provider in Great Falls, Montana, licensed in Montana (113910) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Benefis Hospitals Inc, and is a graduate of New York Medical College (2017).

NPPES Registry Identity

NPI1720510050
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameDR. AARON MICHAEL HASENKRUGCredential: M.D.
Location Address400 13TH AVE S STE 102Great Falls, MT 59405-4300
Mailing AddressPo Box 6010Great Falls, MT 59406-6010 · (406) 731-8888 · Fax (406) 731-8318
Phone(406) 731-8888
Fax(406) 731-8318
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 2017
Enumeration DateMarch 27, 2017
Last NPPES UpdateMay 22, 20242 updates tracked since enumeration
NPPES CertifiedMay 22, 2024
✔ NPI 1720510050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in MT · 113910
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
400 13TH AVE S STE 102, Great Falls, MT 59405
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Other Identifiers 1

Medicaid1073658084MT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and more.Insurance ›

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

Dr. Aaron Michael Hasenkrug M.d. 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 ID5395014179
PECOS Enrollment IDI20221018000791
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 Reassignment

Medicare enrollment records show Aaron Hasenkrug reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Benefis Hospitals Inc
1.7 mi
Multi-Specialty
1401 25TH ST S
Great Falls, MT 59405
  • Reassigned Medicare billing, Montana enrollment
  • 637 clinicians in this Medicare group
NPI 1780968974 (406) 455-5000

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 7

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
33 services31 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
25 services20 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
23 services15 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
22 services17 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
20 services14 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
16 services16 patients

Hospital Affiliations CMS Care Compare 3

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

Benefis Hospitals Inc

Acute Care Hospitals · Great Falls, MT
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270012
Location1101 26th St SGreat Falls, MT 59405 · Cascade County
Emergency services Birthing friendly

Great Falls Clinic Hospital

Acute Care Hospitals · Great Falls, MT
5/5 CMS rating
OwnershipProprietary
CMS Certification Number270086
Location3010 15th Avenue SouthGreat Falls, MT 59405 · Cascade County
Emergency services

Logan Health - Shelby

Critical Access Hospitals · Shelby, MT
OwnershipVoluntary non-profit - Private
CMS Certification Number271328
Location640 Park AveShelby, MT 59474 · Toole County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59405 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
$87.97 typical visit price
range $56.81 – $172.26
Typical copayment $21.99 (range $14.20 – $43.06)
Most-billed visit code 99203
Established Patient
$70.82 typical visit price
range $18.24 – $140.32
Typical copayment $17.70 (range $4.56 – $35.08)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

88.15/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality95.46
Improvement Activities40
Cost66.58

Other Providers at the Same Location NPPES 6

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

GLENN A WINSLOW MD
Surgery
400 13TH AVE S STE 102
GREAT FALLS, MT 59405
Cascade County (406) 454-2171
KRISTIN BYKONEN RDN
Dietitian, Registered (Nutrition, Obesity and Weight Management)
400 13TH AVE S STE 102
GREAT FALLS, MT 59405
Cascade County (406) 455-2877
CHAD M ENGAN MD FACS
Surgery
400 13TH AVE S STE 102
GREAT FALLS, MT 59405
Cascade County (406) 731-8888
DR. DANA MARIE MORGAN M.D.
Family Medicine
400 13TH AVE S STE 102
GREAT FALLS, MT 59405
Cascade County (406) 455-5000
DALE R MORTENSON MD, FACS
Surgery
400 13TH AVE S STE 102
GREAT FALLS, MT 59405
Cascade County (406) 731-8888
JEREMY EVANS JENSEN MD
Surgery
400 13TH AVE S STE 102
GREAT FALLS, MT 59405
Cascade County (573) 882-4141

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 Hasenkrug's NPI number?

The NPI number for Aaron Hasenkrug is 1720510050. It was assigned to this individual provider in the NPPES registry on March 27, 2017.

Where is Aaron Hasenkrug located?

Aaron Hasenkrug practices at 400 13th Ave S Ste 102, Great Falls, MT 59405. The listed phone number is (406) 731-8888.

What is Aaron Hasenkrug's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Aaron Hasenkrug enrolled in Medicare?

Yes. Aaron Hasenkrug 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 organization bills Medicare for Aaron Hasenkrug's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Hasenkrug reassigns Medicare benefits to Benefis Hospitals Inc (Great Falls, MT). The 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 Hasenkrug's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aaron Hasenkrug accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Aaron Hasenkrug as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Aaron Hasenkrug affiliated with any hospitals?

According to CMS data, Aaron Hasenkrug is affiliated with Benefis Hospitals Inc, Great Falls Clinic Hospital and Logan Health - Shelby.

When was this NPI record last updated?

The NPPES record for Aaron Hasenkrug was last updated on May 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.