Janet L. Mahan, MD
NPI 1780651448ActiveIndividual· Internal Medicine· Tinton Falls, NJ
Internal Medicine (MD) in Tinton Falls, New Jersey, trained at Howard University College of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $463,011 for 5,799 claims, against $139,688 paid for services in 2024.
Overview
| NPI | 1780651448 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 1, 2006 |
| Last updated in NPPES | Feb 26, 2026 |
| Certified by provider | Feb 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MAO4910600 | 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 - Internal Medicine (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 411 |
|---|---|
| Services billed | 2,889 across 58 procedure codes |
| Paid by Medicare | $139,688 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,799 · 7,339 30-day fills |
|---|---|
| Patients | 394 |
| Total drug cost | $463,011 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Internal Medicine |
Medical group
- Erickson Health Medical Group of New Jersey PCPompton Plains, NJ · 20 clinicians
Hospital affiliation
- Jersey Shore University Medical CenterNeptune, NJ
Other facilities
- Hackensack Meridian at Home Monmouth CountyHome health agency · Neptune, NJ
- Seabrook Home Health AgencyHome health agency · Tinton Falls, NJ
- Homeside Hospice LLCHospice · Cranford, NJ
- Continuing Care at SeabrookNursing home · Tinton Falls, NJ
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 37 internal medicine physicians in Tinton Falls · All internal medicine physicians in New Jersey