Sarma S. Challa, M.D.
NPI 1699776286ActiveIndividual· Internal Medicine, Cardiovascular Disease· Baytown, TX
Internal Medicine, Cardiovascular Disease (M.D.) in Baytown, Texas, licensed in TX, with an NPI issued in August 2005. Their prescriptions cost Medicare Part D more than their services did: $1,262,687 for 11,079 claims, against $177,043 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 7 companies reporting payments in 2025, $412.79 in all, mostly food and beverage. Lists Houston Methodist Baytown Hospital as a hospital affiliation.
Overview
| NPI | 1699776286 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 3, 2005 |
| Last updated in NPPES | Mar 9, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | G4096 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 576 |
|---|---|
| Services billed | 2,549 across 39 procedure codes |
| Paid by Medicare | $177,043 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,079 · 25,185 30-day fills |
|---|---|
| Patients | 1,268 |
| Total drug cost | $1,262,687 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1975 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Hospital affiliation
- Houston Methodist Baytown HospitalBaytown, TX
Industry payments (Open Payments)
- 2025$412.79 · 20 payments from 7 companies
- 2024$560.12 · 19 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $121.93 | 6 |
| Novartis Pharmaceuticals Corporation | $97.88 | 4 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $83.53 | 5 |
| Amgen Inc. | $41.07 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $32.28 | 1 |
What the 2025 payments were for
- Food and Beverage$412.79 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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