Doctor profile · Federal record

Dr. Karl Demarco, MD

Family Medicine Physician (CMS: Family Practice) · Tyndall, SD

  • NPI 1205483781
  • Accepts Medicare
  • 7 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
410 W 16Th Ave
Tyndall, SD 570662318
(605) 589-2100
fax (605) 589-2115

Credentials & registration

NPPES · NUCC
NPI registered
August 2019 — 7 yrs on file
Profile last updated
September 12, 2024
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
South Dakota #13975

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1205483781. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$36
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Novo Nordisk Inc 1 $21.98
Medtronic, Inc. 1 $14.51

By nature of payment

Food and Beverage
$36

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
530
Patients
136
Total drug cost
$5,699
Drug Type Claims Patients Total cost
Losartan Potassium Generic 99 23 $860
Rosuvastatin Calcium Generic 48 0 $492
Furosemide Generic 45 16 $207
Ipratropium Bromide Generic 37 36 $1,179
Carvedilol Generic 33 0 $253
Tamsulosin Hcl Generic 33 0 $360
Potassium Chloride Generic 32 0 $434
Prednisone Generic 31 25 $99
Gabapentin Generic 29 0 $273
Atorvastatin Calcium Generic 28 15 $314

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Karl Demarco's medical specialty?
Dr. Karl Demarco practices Family Medicine Physician in Tyndall, SD.
Where does Dr. Karl Demarco practice?
Dr. Karl Demarco practices at 410 W 16Th Ave, Tyndall, SD 570662318. Office phone: 6055892100.
What is Dr. Karl Demarco's NPI?
Dr. Karl Demarco's National Provider Identifier (NPI) is 1205483781, issued by NPPES.
Does Dr. Karl Demarco accept Medicare assignment?
Yes. Dr. Karl Demarco accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.