Rajasekaran Annamalai, MD
NPI 1932210234ActiveIndividual· Internal Medicine· Tomball, TX
Internal Medicine (MD) in Tomball, Texas, licensed in TX, with an NPI issued in August 2006. Their prescriptions cost Medicare Part D more than their services did: $686,205 for 5,855 claims, against $40,392 paid for services in 2024. Amgen Inc. was the largest of 15 companies reporting payments in 2025, $418.63 in all, mostly food and beverage. Lists HCA Houston Healthcare Tomball as a hospital affiliation.
Overview
| NPI | 1932210234 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Apr 10, 2024 |
| Certified by provider | Apr 10, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | N0611 | 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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 77 |
|---|---|
| Services billed | 921 across 40 procedure codes |
| Paid by Medicare | $40,392 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,855 · 10,788 30-day fills |
|---|---|
| Patients | 236 |
| Total drug cost | $686,205 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliation
- HCA Houston Healthcare TomballTomball, TX
Other facilities
- Ipr Healthcare Systems, IncHome health agency · Houston, TX
Industry payments (Open Payments)
- 2025$418.63 · 22 payments from 15 companies
- 2024$476.05 · 18 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $68.95 | 4 |
| Astrazeneca Pharmaceuticals LP | $67.39 | 4 |
| Seqirus USA Inc | $38.52 | 2 |
| Azurity Pharmaceuticals, Inc. | $30.21 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $28.12 | 1 |
What the 2025 payments were for
- Food and Beverage$418.63 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Tomball
- 1033153002
- 1043521313
- 1164495339
- 1265953111
- 1508850066
- 1689641839
- 1699782417
- 1801982020
- 1861438525
- 1972570489
- 1982618310
- 1023304946
All 41 internal medicine physicians in Tomball · All internal medicine physicians in Texas