1. Home
  2. Directory
  3. Montana
  4. Great Falls
  5. Internal Medicine
  6. NPI Profile

GARY A BUFFINGTON MD
NPI 1922009802
Internal Medicine in Great Falls, MT

Active since August 02, 2005PECOS Enrolled
81.43/100
CMS Quality Rating
1101 26TH ST S, GREAT FALLS, MT 59405(406) 455-4690(406) 455-4752 Get Directions Write a Review

NPPES record last updated: February 24, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Gary A Buffington Md NPPES

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

GARY A BUFFINGTON MD (NPI 1922009802) is an individual internal medicine provider in Great Falls, Montana, licensed in Montana (4238) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922009802
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGARY A BUFFINGTONCredential: MD
Location Address1101 26TH ST SGreat Falls, MT 59405-5161
Mailing Address5410 Maryland Way, Suite 300Brentwood, TN 37027-5064 · (615) 371-5765 · Fax (888) 241-1404
Phone(406) 455-4690
Fax(406) 455-4752
Sole ProprietorNo
Enumeration DateAugust 2, 2005
Last NPPES UpdateFebruary 24, 2010
✔ NPI 1922009802 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MT · 4238
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.
Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 4238 (MT)
1101 26TH ST S, Great Falls, MT 59405
Open in Google Maps ↗

Other Identifiers 5

Medicare PINP00780245MT
Medicare UPIND20529
Medicaid0044187MT
Medicare PIN000001210MT
Medicare PIN011002589MT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gary A Buffington Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Gary Buffington reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Of Hope Medical Group Of Arizona LLC
970 mi
Medical Oncology
14200 CELEBRATE LIFE WAY
Goodyear, AZ 85338
  • Reassigned Medicare billing, Arizona enrollment
  • 359 clinicians in this Medicare group
NPI 1609026806 (847) 746-4333

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

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
$130.52 typical visit price
range $56.81 – $172.26
Typical copayment $32.63 (range $14.20 – $43.06)
Most-billed visit code 99204
Established Patient
$100.16 typical visit price
range $18.24 – $140.32
Typical copayment $25.04 (range $4.56 – $35.08)
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.

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.

81.43/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.22
Promoting Interoperability100
Improvement Activities40
Cost64.88

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers16 claims16 services$19.93 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers16 claims16 services$111.55 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

OMER USMAN MD
Hospitalist
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 455-5000
EDMUND J BRENNAN MD
Internal Medicine (Clinical Cardiac Electrophysiology)
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 731-8888
MRS. DELENE R LYNES OTA
Occupational Therapy Assistant
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 455-5412
SHELBY ELIZABETH DUFOUR PHARMD
Pharmacist
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 771-6300
DANIEL KNUFFKE
Occupational Therapist
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 781-1305
KRISTIN HUNTOON D.O, PHD
Neurological Surgery
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 455-5000
PATRICK HUGH SMITH FNP-BC
Nurse Practitioner (Family)
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 455-5000
DR. SAMANTHA ANNE BASCO PHARMD
Pharmacist
1101 26TH ST S
GREAT FALLS, MT 59405
Cascade County (406) 455-5430

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 Gary Buffington's NPI number?

The NPI number for Gary Buffington is 1922009802. It was assigned to this individual provider in the NPPES registry on August 2, 2005.

Where is Gary Buffington located?

Gary Buffington practices at 1101 26th St S, Great Falls, MT 59405. The listed phone number is (406) 455-4690.

What is Gary Buffington's specialty?

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

Is Gary Buffington enrolled in Medicare?

Yes. Gary Buffington is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gary Buffington's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Buffington reassigns Medicare benefits to City Of Hope Medical Group Of Arizona LLC (Goodyear, AZ). 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 Gary Buffington's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gary Buffington accept?

Health plans from Providence Health Plan list Gary Buffington 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.

When was this NPI record last updated?

The NPPES record for Gary Buffington was last updated on February 24, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.