Doctor profile · Federal record

Dr. Theresa Gunnarson, MD

Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Amery, WI

  • NPI 1427026780
  • Accepts Medicare
  • MIPS 87.7 / 100 · 2023
  • 29 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 6 locations .

NPPES Updated May 11, 2026
Primary practice
265 Griffin St E
Amery, WI 540011439
(715) 268-8000
Additional location
407 E 3Rd St, Essentia Health St. Mary's Medical Center
Duluth, MN 558051950
(218) 786-4357
Additional location
640 Jackson St
Saint Paul, MN 551012502
(651) 254-3456
Show 3 more locations
Additional location
927 Churchill St W
Stillwater, MN 550826605
(651) 439-5330
Additional location
405 Stageline RD
Hudson, WI 540167848
(715) 531-6000
Additional location
535 Hospital RD
New Richmond, WI 540171449
(715) 243-2600
Mailing address
407 E 3Rd St, Essentia Health St. Mary's Medical Center
Duluth, MN 558051950

Credentials & registration

NPPES · NUCC
NPI registered
March 2006 — 20 yrs on file
Profile last updated
May 10, 2019
Year of graduation
1997 — 29 yrs since
Specialty taxonomy
207P00000X — NUCC code
State licenses (2)
Wisconsin #43477 · Minnesota #40943
Medicaid
MN #406025300

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1427026780. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
396
Distinct HCPCS
4
Medicare allowed
$53,717
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 197 194 $165
99284 Emergency department visit with moderate level of medical decision making 120 116 $114
99283 Emergency department visit with low level of medical decision making 62 58 $67
99291 Critical care, first 30-74 minutes 17 17 $202

In context: peer comparison

Among 11 peers in Amery Emergency Medicine Physician, average services per provider: 58. This provider delivers 6.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
113
Patients
102
Total drug cost
$1,181
Drug Type Claims Patients Total cost
Cefdinir Generic 23 23 $395
Cephalexin Generic 23 23 $164
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 20 20 $247
Ondansetron Odt (Ondansetron) Brand 20 20 $226
Azithromycin Generic 16 16 $116
Prednisone Generic 11 0 $33

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Theresa Gunnarson's medical specialty?
Dr. Theresa Gunnarson practices Emergency Medicine Physician in Amery, WI.
Where does Dr. Theresa Gunnarson practice?
Dr. Theresa Gunnarson practices at 265 Griffin St E, Amery, WI 540011439. Office phone: 7152688000.
What is Dr. Theresa Gunnarson's NPI?
Dr. Theresa Gunnarson's National Provider Identifier (NPI) is 1427026780, issued by NPPES.
Does Dr. Theresa Gunnarson accept Medicare assignment?
Yes. Dr. Theresa Gunnarson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Theresa Gunnarson commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.