James Penn, M.D.
NPI 1588094569ActiveIndividual· Internal Medicine, Gastroenterology· Edison, NJ
Internal Medicine, Gastroenterology (M.D.) in Edison, New Jersey, trained at Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $548,589 for 974 claims, against $109,867 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 16 companies reporting payments in 2025, $9,322 in all, mostly speaking and faculty fees.
Overview
| NPI | 1588094569 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 12, 2013 |
| Last updated in NPPES | Jul 31, 2026 |
| Certified by provider | Jul 31, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA09660900 | NJ |
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 - Internal Medicine (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 521 |
|---|---|
| Services billed | 1,272 across 34 procedure codes |
| Paid by Medicare | $109,867 |
Part D prescriptions in 2024
| Prescriptions (claims) | 974 · 1,700 30-day fills |
|---|---|
| Patients | 305 |
| Total drug cost | $548,589 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Gastroenterology |
Medical group
- Hackensack Meridian Health Medical Group - Specialty Care PCHackensack, NJ · 1,922 clinicians
Hospital affiliations
- Jfk University Medical CenterEdison, NJ
- Robert Wood Johnson University HospitalNew Brunswick, NJ
Industry payments (Open Payments)
- 2025$9,322 · 280 payments from 16 companies
- 2024$5,602 · 206 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $5,548 | 23 |
| Janssen Biotech, Inc. | $758.82 | 42 |
| Abbvie Inc. | $737.35 | 44 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $587.91 | 52 |
| Madrigal Pharmaceuticals | $545.81 | 42 |
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$5,160 · 3 payments
- Food and Beverage$4,049 · 273 payments
- Education$112.95 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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