Doctor profile · Federal record

Dr. Mark Thayer, MD

Surgery Physician · Emergency Medicine Physician · Surgery Physician · Grantsburg, WI

  • NPI 1568424778
  • 20 yrs on file
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
257 W Saint George Ave
Grantsburg, WI 548407827
(715) 463-5353
fax (715) 463-2753

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
July 21, 2022
Specialty taxonomy
208600000X — NUCC code
State licenses (2)
Wisconsin #32528 · Minnesota #31570
Medicaid
MN #918723500

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1568424778. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$15
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
SANOFI PASTEUR INC. 1 $15.46

By nature of payment

Food and Beverage
$15

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Thayer's medical specialty?
Dr. Mark Thayer practices Surgery Physician in Grantsburg, WI.
Where does Dr. Mark Thayer practice?
Dr. Mark Thayer practices at 257 W Saint George Ave, Grantsburg, WI 548407827. Office phone: 7154635353.
What is Dr. Mark Thayer's NPI?
Dr. Mark Thayer's National Provider Identifier (NPI) is 1568424778, issued by NPPES.