John T. Ducker, MD
NPI 1003868597ActiveIndividual· Internal Medicine, Nephrology· Fort Wayne, IN
Internal Medicine, Nephrology (MD) in Fort Wayne, Indiana, trained at Wright State University Boonshoft School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $567,318 for 2,711 claims, against $209,074 paid for services in 2024. Fresenius USA Marketing, Inc. was the largest of 10 companies reporting payments in 2025, $3,785 in all, mostly travel and lodging.
Overview
| NPI | 1003868597 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 16, 2006 |
| Last updated in NPPES | Nov 10, 2022 |
| Certified by provider | Nov 10, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 01041634A | IN |
| Internal Medicine, Nephrology | 207RN0300X | 35072749 | OH |
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 (IN); Practitioner - Nephrology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 515 |
|---|---|
| Services billed | 3,618 across 38 procedure codes |
| Paid by Medicare | $209,074 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,711 · 6,693 30-day fills |
|---|---|
| Patients | 341 |
| Total drug cost | $567,318 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Wright State University Boonshoft School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Nephrology |
Medical group
- Nephrology Associates of Northern Indiana PCVan Wert, OH · 65 clinicians
Hospital affiliations
- Cameron HealthAngola, IN
- Lutheran Hospital of IndianaFort Wayne, IN
- Parkview Dekalb HospitalAuburn, IN
- Parkview Regional Medical CenterFort Wayne, IN
- Parkview Whitley HospitalColumbia City, IN
Other facilities
- Davita Kendallville Renal CenterDialysis facility · Kendallville, IN
- Dialyze Direct Carmel, inDialysis facility · Carmel, IN
- Fmc - Dekalb County DialysisDialysis facility · Auburn, IN
- Fmc - Dupont DialysisDialysis facility · Fort Wayne, IN
- Fmc - Northeast Indiana Kidney Ctr - Fort WayneDialysis facility · Fort Wayne, IN
Industry payments (Open Payments)
- 2025$3,785 · 22 payments from 10 companies
- 2024$671.08 · 38 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fresenius USA Marketing, Inc. | $3,368 | 5 |
| Travere Therapeutics, Inc. | $116.39 | 1 |
| Amgen Inc. | $96.92 | 6 |
| Otsuka America Pharmaceutical, Inc. | $48.07 | 2 |
| Astrazeneca Pharmaceuticals LP | $37.40 | 2 |
What the 2025 payments were for
- Travel and Lodging$3,021 · 2 payments
- Food and Beverage$764.82 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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