Regina Rajagopala Pillai, M.D.
NPI 1720273121ActiveIndividual· Internal Medicine, Pulmonary Disease· Webster, TX
Internal Medicine, Pulmonary Disease (M.D.) with Cls Health PLLC, practicing in Webster, Texas. Their prescriptions cost Medicare Part D more than their services did: $1,377,283 for 3,599 claims, against $300,421 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 17 companies reporting payments in 2025, $12,757 in all, mostly speaking and faculty fees. Lists HCA Houston Healthcare Clear Lake and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1720273121 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 9, 2007 |
| Last updated in NPPES | Mar 17, 2026 |
| Certified by provider | Mar 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | P2343 | TX |
| Internal Medicine, Critical Care Medicine | 207RC0200X | P2343 | TX |
| Internal Medicine | 207R00000X | P2343 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 357 |
|---|---|
| Services billed | 5,936 across 44 procedure codes |
| Paid by Medicare | $300,421 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,599 · 5,147 30-day fills |
|---|---|
| Patients | 593 |
| Total drug cost | $1,377,283 |
| Generic share | 43% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Cls Health PLLCWebster, TX · 180 clinicians
Hospital affiliations
- HCA Houston Healthcare Clear LakeWebster, TX
- Houston Methodist Baytown HospitalBaytown, TX
- Houston Methodist Clear Lake HospitalNassau Bay, TX
- Memorial Hermann Hospital SystemHouston, TX
Other facilities
- Pam Rehabilitation Hospital of Clear LakeInpatient rehabilitation facility · Webster, TX
Industry payments (Open Payments)
- 2025$12,757 · 131 payments from 17 companies
- 2024$1,737 · 94 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $10,739 | 45 |
| Astrazeneca Pharmaceuticals LP | $719.70 | 31 |
| Genzyme Corporation | $179.07 | 6 |
| Regeneron Healthcare Solutions, Inc. | $175.43 | 7 |
| Verona Pharma, Inc. | $175.02 | 8 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$9,750 · 5 payments
- Food and Beverage$3,007 · 126 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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