Doctor profile · Federal record

Dr. Matthew Maunu, MD

Surgery Physician (CMS: General Surgery) · Dillon, MT

  • NPI 1881684546
  • Accepts Medicare
  • 30 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
600 Mt Highway 91 S
Dillon, MT 597257379
(406) 683-3000
fax (406) 683-3027

Credentials & registration

NPPES · NUCC
NPI registered
October 2005 — 21 yrs on file
Profile last updated
August 21, 2023
Year of graduation
1996 — 30 yrs since
Specialty taxonomy
208600000X — NUCC code
State license (1)
Minnesota #44007

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1881684546. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$17
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
MIMEDX Group, Inc. 1 $16.92

By nature of payment

Food and Beverage
$17

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
49
Patients
45
Total drug cost
$369
Drug Type Claims Patients Total cost
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 20 17 $88
Oxycodone Hcl Generic 17 16 $63
Ketorolac Tromethamine Generic 12 12 $219

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Matthew Maunu's medical specialty?
Dr. Matthew Maunu practices Surgery Physician in Dillon, MT.
Where does Dr. Matthew Maunu practice?
Dr. Matthew Maunu practices at 600 Mt Highway 91 S, Dillon, MT 597257379. Office phone: 4066833000.
What is Dr. Matthew Maunu's NPI?
Dr. Matthew Maunu's National Provider Identifier (NPI) is 1881684546, issued by NPPES.
Does Dr. Matthew Maunu accept Medicare assignment?
Yes. Dr. Matthew Maunu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.