Karl Demarco, MD
NPI 1205483781 · Family Medicine Physician · Tyndall, SD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Demarco, MD is a Family Medicine Physician provider in Tyndall, SD (NPI 1205483781).
Provider details
- NPI number
- 1205483781
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 13975 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 143 | 29 |
| Rosuvastatin Calcium | 87 | 16 |
| Atorvastatin Calcium | 84 | 19 |
| Prednisone | 75 | 45 |
| Furosemide | 71 | 17 |
| Duloxetine Hcl | 68 | 13 |
| Levothyroxine Sodium | 64 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$36 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-08-20
- Last updated
- 2024-09-12
- Certified
- 2024-09-12
Frequently asked questions
- What is Karl Demarco's NPI number?
- Karl Demarco's National Provider Identifier (NPI) is 1205483781, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Demarco's specialty?
- Karl Demarco is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Demarco located?
- Karl Demarco's practice location on file with NPPES is 410 W 16th Ave, Tyndall, SD 57066-2318.
- What is Karl Demarco's phone number?
- The practice phone number listed in the NPPES registry for Karl Demarco is (605) 589-2100.
- Does Karl Demarco accept Medicare?
- Karl Demarco is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Demarco's NPI active?
- Yes — Karl Demarco's NPI (1205483781) is active in the NPPES registry as of the last update on 2024-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.