Taher M. Attia Khalil, M.D.
NPI 1962458752ActiveIndividual· Internal Medicine, Nephrology· Riverside, CA
Internal Medicine, Nephrology (M.D.) with Nephrology Associates Medical Group Inc, practicing in Riverside, California. Their prescriptions cost Medicare Part D more than their services did: $819,081 for 3,081 claims, against $174,060 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 18 companies reporting payments in 2025, $812.05 in all, mostly food and beverage. Lists Hemet Global Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1962458752 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 25, 2006 |
| Last updated in NPPES | Aug 4, 2021 |
| Certified by provider | Aug 4, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A62790 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 352 |
|---|---|
| Services billed | 1,886 across 29 procedure codes |
| Paid by Medicare | $174,060 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,081 · 7,149 30-day fills |
|---|---|
| Patients | 367 |
| Total drug cost | $819,081 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Nephrology Associates Medical Group IncTemecula, CA · 64 clinicians
Hospital affiliations
- Hemet Global Medical CenterHemet, CA
- Parkview Community Hospital Medical CenterRiverside, CA
- Riverside Community HospitalRiverside, CA
Other facilities
- Davita Magnolia West DialysisDialysis facility · Riverside, CA
- Davita Riverside Mission Home TrainingDialysis facility · Riverside, CA
Industry payments (Open Payments)
- 2025$812.05 · 39 payments from 18 companies
- 2024$1,007 · 43 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $107.01 | 4 |
| Ardelyx, Inc. | $78.90 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $75.96 | 4 |
| Ani Pharmaceuticals, Inc. | $67.99 | 3 |
| Vifor Pharma, Inc. | $64.65 | 3 |
What the 2025 payments were for
- Food and Beverage$812.05 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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