Felix Obregon
NPI 1831271709ActiveIndividual· Internal Medicine· Naperville, IL
Internal Medicine in Naperville, Illinois, licensed in IL, with an NPI issued in October 2006. Their prescriptions cost Medicare Part D more than their services did: $347,860 for 3,815 claims, against $45,053 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $619.98 in all, mostly food and beverage. Lists Northwestern Medicine Delnor Community Hospital as a hospital affiliation.
Overview
| NPI | 1831271709 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Oct 20, 2006 |
| Last updated in NPPES | Feb 6, 2024 |
| Certified by provider | Feb 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-069552 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 631 across 19 procedure codes |
| Paid by Medicare | $45,053 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,815 · 6,629 30-day fills |
|---|---|
| Patients | 145 |
| Total drug cost | $347,860 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1976 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliation
Other facilities
- Darien Home Healthcare, Inc.Home health agency · Darien, IL
Industry payments (Open Payments)
- 2025$619.98 · 32 payments from 8 companies
- 2024$524.47 · 24 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $192.31 | 10 |
| Novo Nordisk Inc | $158.33 | 8 |
| Lilly USA, LLC | $82.57 | 4 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $64.44 | 3 |
| Pfizer Inc. | $47.73 | 3 |
What the 2025 payments were for
- Food and Beverage$619.98 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Naperville
- 1023078631
- 1063668192
- 1124282546
- 1144270976
- 1164418729
- 1164539094
- 1174728430
- 1184253544
- 1255396511
- 1265400972
- 1265449722
- 1265548093
All 114 internal medicine physicians in Naperville · All internal medicine physicians in Illinois