Darryl L. Kawalsky, MD
NPI 1619924222ActiveIndividual· Internal Medicine, Cardiovascular Disease· McKinney, TX
Internal Medicine, Cardiovascular Disease (MD) with Cardiology Specialists of North Texas PLLC, practicing in McKinney, Texas. Their prescriptions cost Medicare Part D more than their services did: $927,917 for 4,219 claims, against $161,724 paid for services in 2024. Heartflow, Inc. was the largest of 18 companies reporting payments in 2025, $2,065 in all, mostly food and beverage. Lists Medical City Dallas Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1619924222 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 28, 2006 |
| Last updated in NPPES | Jan 4, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | J2633 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 758 |
|---|---|
| Services billed | 2,202 across 35 procedure codes |
| Paid by Medicare | $161,724 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,219 · 10,246 30-day fills |
|---|---|
| Patients | 544 |
| Total drug cost | $927,917 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Cardiology Specialists of North Texas PLLCDallas, TX · 68 clinicians
Hospital affiliations
- Medical City Dallas HospitalDallas, TX
- Medical City Las ColinasIrving, TX
- Medical City PlanoPlano, TX
Industry payments (Open Payments)
- 2025$2,065 · 60 payments from 18 companies
- 2024$2,079 · 64 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heartflow, Inc. | $271.72 | 3 |
| Pfizer Inc. | $266.29 | 10 |
| Bridgebio Pharma, Inc. | $260.61 | 6 |
| Merck Sharp & Dohme LLC | $180.74 | 8 |
| Edwards Lifesciences Corporation | $165.80 | 1 |
What the 2025 payments were for
- Food and Beverage$2,065 · 60 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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