Raju B. Ray, MD
NPI 1487652186ActiveIndividual· Internal Medicine, Nephrology· Elk Grove Village, IL
Internal Medicine, Nephrology (MD) with Nephrology Associates of Northern Illinois Ltd and 1 other group, practicing in Elk Grove Village, Illinois. Their prescriptions cost Medicare Part D more than their services did: $346,659 for 1,429 claims, against $216,512 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 17 companies reporting payments in 2025, $1,094 in all, mostly food and beverage. Lists Alexian Brothers Medical Center 1 and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1487652186 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 7, 2005 |
| Last updated in NPPES | Jan 26, 2023 |
| Certified by provider | Jan 26, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036094683 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 517 |
|---|---|
| Services billed | 2,489 across 28 procedure codes |
| Paid by Medicare | $216,512 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,429 · 3,022 30-day fills |
|---|---|
| Patients | 246 |
| Total drug cost | $346,659 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical groups
- Nephrology Associates of Northern Illinois LtdAlgonquin, IL · 117 clinicians
- Nani Elk GroveElk Grove Village, IL · 18 clinicians
Hospital affiliations
- Alexian Brothers Medical Center 1Elk Grove Village, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Saint Joseph Hospital-ElginElgin, IL
- St Alexius Medical CenterHoffman Estates, IL
- Uchicago Medicine Adventhealth HinsdaleHinsdale, IL
Other facilities
- Ara - South Barrington Dialysis CenterDialysis facility · South Barrington, IL
- Davita Barrington Creek DialysisDialysis facility · Lake Barrington, IL
- Fmc - Hoffman EstatesDialysis facility · Hoffman Estates, IL
- Fresenius Medical Care ElginDialysis facility · Elgin, IL
- Usrc Streamwood DialysisDialysis facility · Streamwood, IL
Industry payments (Open Payments)
- 2025$1,094 · 36 payments from 17 companies
- 2024$948.99 · 38 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $209.86 | 5 |
| Mallinckrodt Hospital Products Inc. | $135.30 | 1 |
| Amgen Inc. | $122.67 | 5 |
| Calliditas Therapeutics US Inc. | $105.32 | 4 |
| Lilly USA, LLC | $65.78 | 3 |
What the 2025 payments were for
- Food and Beverage$1,094 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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