Michael Frank Demyen, MD
NPI 1568611465ActiveIndividual· Internal Medicine, Gastroenterology· Denville, NJ
Internal Medicine, Gastroenterology (MD) with Medical Associates of Englewood PC, practicing in Denville, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $684,276 for 1,134 claims, against $48,518 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $2,238 in all, mostly food and beverage. Lists Englewood Hospital and Medical Center as a hospital affiliation.
Overview
| NPI | 1568611465 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 16, 2008 |
| Last updated in NPPES | Jul 21, 2022 |
| Certified by provider | Mar 20, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 25MA07864700 | NJ |
| Internal Medicine | 207R00000X | 25MA07864700 | 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 - Gastroenterology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 228 |
|---|---|
| Services billed | 430 across 33 procedure codes |
| Paid by Medicare | $48,518 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,134 · 1,755 30-day fills |
|---|---|
| Patients | 392 |
| Total drug cost | $684,276 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Medical Associates of Englewood PCEnglewood, NJ · 540 clinicians
Hospital affiliation
- Englewood Hospital and Medical CenterEnglewood, NJ
Industry payments (Open Payments)
- 2025$2,238 · 101 payments from 18 companies
- 2024$1,271 · 71 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $431.98 | 15 |
| Madrigal Pharmaceuticals | $400.91 | 27 |
| Phathom Pharmaceuticals, Inc. | $290.49 | 19 |
| Takeda Pharmaceuticals U.S.A., Inc. | $203.86 | 6 |
| Novo Nordisk Inc | $172.95 | 4 |
What the 2025 payments were for
- Food and Beverage$2,238 · 101 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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