Jeffrey Mark Jacobs, M.D.
NPI 1174524136ActiveIndividual· Internal Medicine, Gastroenterology· Herrin, IL
Internal Medicine, Gastroenterology (M.D.) in Herrin, Illinois, trained at Jefferson Medical College of Thomas Jefferson University (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $725,299 for 675 claims, against $232,499 paid for services in 2024. Olympus Medical Systems Corporation was the largest of 18 companies reporting payments in 2025, $3,424 in all, mostly food and beverage.
Overview
| NPI | 1174524136 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 2, 2005 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036092245 | 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); Practitioner - Gastroenterology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 518 |
|---|---|
| Services billed | 8,732 across 48 procedure codes |
| Paid by Medicare | $232,499 |
Part D prescriptions in 2024
| Prescriptions (claims) | 675 · 1,020 30-day fills |
|---|---|
| Patients | 288 |
| Total drug cost | $725,299 |
| Generic share | 59% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Illinois Gastroenterology Group LLCArlington Heights, IL · 115 clinicians
Hospital affiliations
- Advocate Lutheran General HospitalPark Ridge, IL
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwestern Lake Forest HospitalLake Forest, IL
Industry payments (Open Payments)
- 2025$3,424 · 106 payments from 18 companies
- 2024$2,400 · 109 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus Medical Systems Corporation | $850.00 | 1 |
| Abbvie Inc. | $521.72 | 27 |
| Janssen Biotech, Inc. | $473.91 | 14 |
| Pfizer Inc. | $235.31 | 11 |
| Ipsen Biopharmaceuticals, Inc | $230.06 | 5 |
What the 2025 payments were for
- Food and Beverage$2,475 · 104 payments
- Consulting Fee$850.00 · 1 payment
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Herrin
- 1457366858
- 1558321190
- 1841268521
- 1881782654
- 1609914183