Karen Thomas, MD
NPI 1821124413 · Cardiovascular Disease Physician · Lone Tree, CO
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Thomas, MD is a Cardiovascular Disease Physician provider in Lone Tree, CO (NPI 1821124413).
Provider details
- NPI number
- 1821124413
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 222630 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 220 | 79 |
| Metoprolol Tartrate | 147 | 49 |
| Furosemide | 129 | 52 |
| Apixabanbrand: Eliquis | 125 | 26 |
| Atorvastatin Calcium | 119 | 42 |
| Lisinopril | 109 | 39 |
| Empagliflozin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$103 across 3 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
- 2007-02-26
- Last updated
- 2021-06-04
- Certified
- 2021-06-04
Frequently asked questions
- What is Karen Thomas's NPI number?
- Karen Thomas's National Provider Identifier (NPI) is 1821124413, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Thomas's specialty?
- Karen Thomas is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Thomas located?
- Karen Thomas's practice location on file with NPPES is 10240 Park Meadows Dr, Lone Tree, CO 80124-5425.
- What is Karen Thomas's phone number?
- The practice phone number listed in the NPPES registry for Karen Thomas is (303) 338-4545.
- Does Karen Thomas accept Medicare?
- Karen Thomas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Thomas's NPI active?
- Yes — Karen Thomas's NPI (1821124413) is active in the NPPES registry as of the last update on 2021-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.