Dennis Di Chen, MD
NPI 1467715235ActiveIndividual· Internal Medicine, Gastroenterology· Chicago, IL
Internal Medicine, Gastroenterology (MD) with University of Chicago and 1 other group, practicing in Chicago, Illinois. Mostly services rather than prescriptions: Medicare paid $73,809 for 174 patients in 2024, with only 26 Part D claims. Cook Incorporated was the largest of 8 companies reporting payments in 2025, $4,417 in all, mostly speaking and faculty fees. Lists The University of Chicago Medical Center as a hospital affiliation.
Overview
| NPI | 1467715235 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 18, 2012 |
| Last updated in NPPES | Jan 25, 2022 |
| Certified by provider | Jan 25, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036.149488 | 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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 174 |
|---|---|
| Services billed | 548 across 62 procedure codes |
| Paid by Medicare | $73,809 |
Part D prescriptions in 2024
| Prescriptions (claims) | 26 · 28 30-day fills |
|---|---|
| Patients | 22 |
| Total drug cost | $488.09 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- University of ChicagoChicago, IL · 1,712 clinicians
- The University of Chicago Medical CenterChicago, IL · 915 clinicians
Hospital affiliation
- The University of Chicago Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$4,417 · 20 payments from 8 companies
- 2024$2,100 · 27 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cook Incorporated | $2,790 | 1 |
| Cook Medical LLC | $506.74 | 5 |
| Boston Scientific Corporation | $391.42 | 5 |
| Conmed Corporation | $268.15 | 4 |
| Olympus America Inc. | $165.32 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2,790 · 1 payment
- Food and Beverage$1,627 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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