Martin K. Kittaka, MD
NPI 1649220765ActiveIndividual· Internal Medicine, Nephrology· Elmhurst, IL
Internal Medicine, Nephrology (MD) in Elmhurst, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $304,459 for 1,624 claims, against $197,084 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 3 companies reporting payments in 2025, $71.49 in all, mostly food and beverage.
Overview
| NPI | 1649220765 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | May 26, 2021 |
| Certified by provider | May 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036068667 | IL |
| Internal Medicine | 207R00000X | 036068667 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 396 |
|---|---|
| Services billed | 7,445 across 28 procedure codes |
| Paid by Medicare | $197,084 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,624 · 3,908 30-day fills |
|---|---|
| Patients | 214 |
| Total drug cost | $304,459 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical groups
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
- Nephrology Associates of Northern Illinois LtdAlgonquin, IL · 117 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
Other facilities
- Fmc - Elmhurst Dialysis CenterDialysis facility · Elmhurst, IL
- Usrc Villa Park DialysisDialysis facility · Villa Park, IL
- Residential Home HealthHome health agency · Lisle, IL
Industry payments (Open Payments)
- 2025$71.49 · 3 payments from 3 companies
- 2024$179.61 · 8 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $28.22 | 1 |
| Amgen Inc. | $22.03 | 1 |
| Ardelyx, Inc. | $21.24 | 1 |
What the 2025 payments were for
- Food and Beverage$71.49 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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