Michael Heffernan
NPI 1891374906ActiveIndividual· Internal Medicine· Chicago, IL
Internal Medicine in Chicago, Illinois, licensed in IL, with an NPI issued in April 2021. Mostly services rather than prescriptions: Medicare paid $5,618 for 30 patients in 2024, with only 36 Part D claims. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $1,055 in all, mostly food and beverage.
Overview
| NPI | 1891374906 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Apr 6, 2021 |
| Last updated in NPPES | Jun 18, 2021 |
| Certified by provider | Jun 18, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 125.078139 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Hospitalist (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 30 |
|---|---|
| Services billed | 68 across 6 procedure codes |
| Paid by Medicare | $5,618 |
Part D prescriptions in 2024
| Prescriptions (claims) | 36 · 54 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $365.73 |
| Generic share | 92% of claims |
Industry payments (Open Payments)
- 2025$1,055 · 25 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $273.06 | 4 |
| 3-D Matrix, Inc. | $259.43 | 1 |
| Janssen Biotech, Inc. | $175.29 | 5 |
| Genzyme Corporation | $83.88 | 3 |
| Intercept Pharmaceuticals, Inc. | $62.73 | 3 |
What the 2025 payments were for
- Food and Beverage$971.25 · 24 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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