Doctor profile · Federal record

Dr. Thomas McMahon, MD

Surgery Physician · Anaconda, MT

  • NPI 1558399709
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 5 locations .

NPPES Updated May 11, 2026
Primary practice
305 W Pennsylvania Ave
Anaconda, MT 597111900
(406) 563-8571
fax (406) 563-8523
Additional location
2901 Squalicum Pkwy
Bellingham, WA 982251851
(360) 734-5400
Additional location
520 N 4Th Ave
Pasco, WA 993015257
(509) 547-7704
Show 2 more locations
Additional location
710 Birchwood Ave Ste 101
Bellingham, WA 982251720
(360) 676-0922
Additional location
2827 Fort Missoula RD
Missoula, MT 598047408
(406) 728-4100
Mailing address
1019 Hilda Ave
Missoula, MT 598014323

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
January 12, 2024
Specialty taxonomy
208600000X — NUCC code
State license (1)
Montana #8098

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1558399709. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
27
Distinct HCPCS
2
Medicare allowed
$12,003
HCPCS Description Services Patients Avg allowed
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion 15 12 $41
22558 Fusion of lower spine bone through abdomen with partial removal of disc 12 12 $949

In context: peer comparison

Among 1 peers in Anaconda Surgery Physician, average services per provider: 13. This provider delivers 2.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$111
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Orthofix Medical, INC. 1 $71.40
Stryker Corporation 1 $40.00

By nature of payment

Food and Beverage
$111

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas McMahon's medical specialty?
Dr. Thomas McMahon practices Surgery Physician in Anaconda, MT.
Where does Dr. Thomas McMahon practice?
Dr. Thomas McMahon practices at 305 W Pennsylvania Ave, Anaconda, MT 597111900. Office phone: 4065638571.
What is Dr. Thomas McMahon's NPI?
Dr. Thomas McMahon's National Provider Identifier (NPI) is 1558399709, issued by NPPES.
What procedures does Dr. Thomas McMahon commonly perform?
Top Medicare-reported procedures in 2023: Insertion of cage or mesh device to spine bone and disc space during spine fusion (HCPCS 22853); Fusion of lower spine bone through abdomen with partial removal of disc (HCPCS 22558). Source: CMS Medicare Physician & Other Practitioners file.