MRS. KATIE ANN REILLEY GRENIGER MSN, FNP-BC
NPI 1356128524
Internal Medicine in Grand Rapids, MN

Q: What is Katie Greniger's NPI number?

The NPI number for Katie Greniger is 1356128524. It was assigned to this individual provider in the NPPES registry on September 12, 2023.

Q: What is Katie Greniger's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Katie Greniger was last updated on September 12, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since September 12, 2023PECOS EnrolledAccepts Medicare Assignment

1601 GOLF COURSE RD, GRAND RAPIDS, MN 55744(218) 326-3401 Get Directions Write a Review

NPPES record last updated: September 12, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Mrs. Katie Ann Reilley Greniger Msn, Fnp-bc NPPES

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

MRS. KATIE ANN REILLEY GRENIGER MSN, FNP-BC (NPI 1356128524) is an individual internal medicine provider in Grand Rapids, Minnesota, licensed in Minnesota (10675) and active in the NPI registry since September 2023. She is enrolled in Medicare PECOS, is affiliated with Bigfork Valley Hospital, and is a graduate of Other (2023).

NPPES Registry Identity

NPI1356128524

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMRS. KATIE ANN REILLEY GRENIGERCredential: MSN, FNP-BC

Location Address1601 GOLF COURSE RDGrand Rapids, MN 55744-8648

Mailing Address25155 Timber Tree DrCohasset, MN 55721-5203 · (218) 791-9110

Phone(218) 326-3401

Sole ProprietorNo

Medical School CMSOtherGraduated 2023

Enumeration DateSeptember 12, 2023

NPPES CertifiedSeptember 12, 2023

✔ NPI 1356128524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MN · 10675

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1601 GOLF COURSE RD, Grand Rapids, MN 55744

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Aspirus Health Plan, HealthPartners, Medica 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

Mrs. Katie Ann Reilley Greniger Msn, Fnp-bc 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 ID8123475951

PECOS Enrollment IDI20231115002677

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

Medicare enrollment records show Katie Greniger reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Grand Itasca Clinic And Hospital

0.2 mi

General Acute Care Hospital

1601 GOLF COURSE RD
Grand Rapids, MN 55744

Reassigned Medicare billing, Minnesota enrollment
555 clinicians in this Medicare group

NPI 1669426631 (218) 326-3401

Dermatology Professionals, PA

1.4 mi

MOHS-Micrographic Surgery

1749 SE 2ND AVE
Grand Rapids, MN 55744

Reassigned Medicare billing, Minnesota enrollment
11 clinicians in this Medicare group

NPI 1467169979 (218) 454-7546

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.

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.

100 services84 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.

86 services69 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

12 services12 patients

Hospital Affiliations CMS Care Compare

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

Bigfork Valley Hospital

Critical Access Hospitals · Bigfork, MN

OwnershipGovernment - Hospital District or Authority

CMS Certification Number241316

Location258 Pine Tree DriveBigfork, MN 56628 · Itasca County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55744 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

$127.61 typical visit price

range $56.00 – $168.28

Typical copayment $31.90 (range $14.00 – $42.07)

Most-billed visit code 99204

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.

MRS. JESSICA JO DAY NURSE PRACTITIONER

Nurse Practitioner (Family)