John Travis Ludwig, M.D.
NPI 1215342449ActiveIndividual· Internal Medicine, Nephrology· Chicago, IL
Internal Medicine, Nephrology (M.D.) in Chicago, Illinois, trained at Pennsylvania State University College of Medicine (class of 2010). In 2024 Medicare paid $90,441 for 207 patients, and Part D covered 264 of their prescriptions, 83% of them generic. Calliditas Therapeutics US Inc. was the largest of 5 companies reporting payments in 2025, $312.64 in all, mostly food and beverage.
Overview
| NPI | 1215342449 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 26, 2014 |
| Last updated in NPPES | Apr 12, 2022 |
| Certified by provider | Apr 12, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 4301114038 | MI |
| Internal Medicine | 207R00000X | 125065890 | IL |
| Internal Medicine | 207R00000X | 4301114038 | MI |
| Pediatrics | 208000000X | 4301114038 | MI |
| Pediatrics | 208000000X | 125065890 | 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 | 207 |
|---|---|
| Services billed | 924 across 20 procedure codes |
| Paid by Medicare | $90,441 |
Part D prescriptions in 2024
| Prescriptions (claims) | 264 · 598 30-day fills |
|---|---|
| Patients | 66 |
| Total drug cost | $46,576 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Pennsylvania State University College of Medicine |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Nephrology |
Medical group
- Nephrology Associates of Northern Illinois LtdAlgonquin, IL · 117 clinicians
Hospital affiliations
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Presence Saints Mary and Elizabeth Medical CenterChicago, IL
- Saint Francis Hospital-EvanstonEvanston, IL
- Swedish HospitalChicago, IL
Other facilities
- Concerto DialysisDialysis facility · Lincolnwood, IL
- Dialyze Direct Il - Glen EllynDialysis facility · Glen Ellyn, IL
- Fmc - Rogers ParkDialysis facility · Chicago, IL
Industry payments (Open Payments)
- 2025$312.64 · 9 payments from 5 companies
- 2024$153.36 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $197.10 | 3 |
| Travere Therapeutics, Inc. | $54.12 | 3 |
| Aurinia Pharma U.S., Inc. | $25.12 | 1 |
| Novartis Pharmaceuticals Corporation | $20.62 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $15.68 | 1 |
What the 2025 payments were for
- Food and Beverage$312.64 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in Chicago
- 1184694259
- 1235627332
- 1730816703
- 1245916071
- 1720769227
- 1023767886
- 1588676944
- 1205019270
- 1457733180
- 1710074976
- 1154984755
- 1952551517