Vinay Kumar Kantamneni, MD
NPI 1508811258ActiveIndividual· Internal Medicine, Nephrology· Waterloo, IA
Internal Medicine, Nephrology (MD) with Cedar Valley Medical Specialists PC, practicing in Waterloo, Iowa. In 2024 Medicare paid $227,895 for 685 patients, and Part D covered 1,603 of their prescriptions, 88% of them generic. Nxstage Medical, Inc. reported $18.27 in payments in 2025, mostly food and beverage. Lists Allen Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1508811258 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 23, 2006 |
| Last updated in NPPES | Feb 4, 2022 |
| Certified by provider | Feb 4, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 32046 | IA |
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 - Nephrology (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 685 |
|---|---|
| Services billed | 6,786 across 27 procedure codes |
| Paid by Medicare | $227,895 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,603 · 2,564 30-day fills |
|---|---|
| Patients | 391 |
| Total drug cost | $93,912 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Cedar Valley Medical Specialists PCCedar Falls, IA · 43 clinicians
Hospital affiliations
- Allen HospitalWaterloo, IA
- Buchanan County Health CenterIndependence, IA
- Community Memorial Hospital Medical CenterSumner, IA
- Grundy County Memorial HospitalGrundy Center, IA
- Mercyone Waterloo Medical CenterWaterloo, IA
Other facilities
- Davita Cedar Valley DialysisDialysis facility · Waterloo, IA
- Davita Marshalltown Mary Greeley DialysisDialysis facility · Marshalltown, IA
- Davita West Union Dialysis CenterDialysis facility · West Union, IA
Industry payments (Open Payments)
- 2025$18.27 · 1 payment from 1 company
- 2024$52.99 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Nxstage Medical, Inc. | $18.27 | 1 |
What the 2025 payments were for
- Food and Beverage$18.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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