Viswanath Kalapatapu, M.D.
NPI 1972549061ActiveIndividual· Internal Medicine· Katy, TX
Internal Medicine (M.D.) with Katy Internal Medicine Associates, L.L.P, practicing in Katy, Texas. Their prescriptions cost Medicare Part D more than their services did: $881,208 for 8,349 claims, against $170,416 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $1,993 in all, mostly food and beverage. Lists Houston Methodist West Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1972549061 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 20, 2006 |
| Last updated in NPPES | Dec 17, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | M3602 | TX |
| Internal Medicine | 207R00000X | 050697 | GA |
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 | 381 |
|---|---|
| Services billed | 3,028 across 64 procedure codes |
| Paid by Medicare | $170,416 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,349 · 19,174 30-day fills |
|---|---|
| Patients | 590 |
| Total drug cost | $881,208 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Katy Internal Medicine Associates, L.L.PKaty, TX · 8 clinicians
Hospital affiliations
- Houston Methodist West HospitalHouston, TX
- Memorial Hermann Katy HospitalKaty, TX
- Memorial Hermann Memorial City HospitalHouston, TX
Other facilities
- Accentcare Home Health of Houston - North, LLCHome health agency · Houston, TX
- Vantage HospiceHospice · Houston, TX
- Memorial Hermann Rehabilitation Hospital KatyInpatient rehabilitation facility · Katy, TX
- Oakmont Healthcare and Rehabilitation Center of KaNursing home · Katy, TX
Industry payments (Open Payments)
- 2025$1,993 · 131 payments from 21 companies
- 2024$1,738 · 107 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $240.27 | 29 |
| Glaxosmithkline, LLC. | $189.38 | 10 |
| Amgen Inc. | $187.71 | 12 |
| Bayer Healthcare Pharmaceuticals Inc. | $170.60 | 11 |
| Lilly USA, LLC | $159.69 | 10 |
What the 2025 payments were for
- Food and Beverage$1,993 · 131 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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