Michael V. Chiorean, MD
NPI 1578527099ActiveIndividual· Internal Medicine, Gastroenterology· Chicago, IL
Internal Medicine, Gastroenterology (MD) with Ella E M Brown Charitable Circle and 1 other group, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,091,478 for 525 claims, against $38,915 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $279,278 in all, mostly speaking and faculty fees. Lists Oaklawn Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1578527099 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 13, 2006 |
| Last updated in NPPES | Sep 10, 2026 |
| Certified by provider | Sep 10, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036178440 | IL |
| Internal Medicine, Gastroenterology | 207RG0100X | 01059760A | IN |
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 - Gastroenterology (IN); Practitioner - Gastroenterology (MI); Practitioner - Gastroenterology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 205 |
|---|---|
| Services billed | 334 across 34 procedure codes |
| Paid by Medicare | $38,915 |
Part D prescriptions in 2024
| Prescriptions (claims) | 525 · 713 30-day fills |
|---|---|
| Patients | 288 |
| Total drug cost | $1,091,478 |
| Generic share | 66% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- Ella E M Brown Charitable CircleFort Wayne, IN · 170 clinicians
- Seattle Rheumatology Associates PLLCSeattle, WA · 9 clinicians
Hospital affiliations
- Oaklawn HospitalMarshall, MI
- Swedish Medical CenterSeattle, WA
Industry payments (Open Payments)
- 2025$279,278 · 268 payments from 15 companies
- 2024$315,110 · 310 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $106,055 | 83 |
| Lilly USA, LLC | $68,662 | 73 |
| Janssen Biotech, Inc. | $43,862 | 39 |
| Pfizer Inc. | $28,190 | 28 |
| Takeda Pharmaceuticals U.S.A., Inc. | $12,539 | 21 |
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$207,706 · 53 payments
- Travel and Lodging$28,419 · 95 payments
- Consulting Fee$25,975 · 7 payments
- Honoraria$11,003 · 3 payments
- Food and Beverage$6,175 · 110 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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