Firpo Eugenio Guerrero, M.D.
NPI 1518973742ActiveIndividual· Internal Medicine, Gastroenterology· Newark, NJ
Internal Medicine, Gastroenterology (M.D.) with Essex Gastro Associates, PA, practicing in Newark, New Jersey. In 2024 Medicare paid $101,516 for 547 patients, and Part D covered 1,866 of their prescriptions, 84% of them generic. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $85.02 in all, mostly food and beverage.
Overview
| NPI | 1518973742 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | May 18, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA04217500 | NJ |
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 (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 547 |
|---|---|
| Services billed | 851 across 18 procedure codes |
| Paid by Medicare | $101,516 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,866 · 5,029 30-day fills |
|---|---|
| Patients | 691 |
| Total drug cost | $69,647 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Essex Gastro Associates, PANewark, NJ · 5 clinicians
Industry payments (Open Payments)
- 2025$85.02 · 5 payments from 2 companies
- 2024$53.55 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $62.04 | 4 |
| Ardelyx, Inc. | $22.98 | 1 |
What the 2025 payments were for
- Food and Beverage$85.02 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Newark
- 1063428878
- 1124480132
- 1235535436
- 1336411453
- 1639599673
- 1740213297
- 1821594474
- 1891215174
- 1891839312
- 1912347030
- 1952491854
- 1992051635
All 29 gastroenterologists in Newark · All gastroenterologists in New Jersey