Michael Dennis Flanagan, MD, PHD
NPI 1851453252ActiveIndividual· Internal Medicine· Bryn Mawr, PA
Internal Medicine (MD, PHD) in Bryn Mawr, Pennsylvania, trained at Perelman School of Med at the University of Pennsylvania (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $854,717 for 8,444 claims, against $229,838 paid for services in 2024. Abbvie Inc. was the largest of 20 companies reporting payments in 2025, $1,219 in all, mostly food and beverage.
Overview
| NPI | 1851453252 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Dec 14, 2006 |
| Last updated in NPPES | Aug 8, 2025 |
| Certified by provider | Aug 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD031671E | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 634 |
|---|---|
| Services billed | 3,141 across 46 procedure codes |
| Paid by Medicare | $229,838 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,444 · 16,841 30-day fills |
|---|---|
| Patients | 705 |
| Total drug cost | $854,717 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
Medical group
- Bryn Mawr Medical Specialists AssociationBryn Mawr, PA · 134 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Main Line Hospital LankenauWynnewood, PA
- Paoli HospitalPaoli, PA
Other facilities
- Main Line Health Home Care & Hospice - Home HealthHome health agency · Radnor, PA
- Residential Home Health of Carlisle LLCHome health agency · Havertown, PA
- Bryn Mawr Rehabilitation HospitalInpatient rehabilitation facility · Malvern, PA
- QuadrangleNursing home · Haverford, PA
Industry payments (Open Payments)
- 2025$1,219 · 57 payments from 20 companies
- 2024$1,149 · 55 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $147.83 | 8 |
| Novo Nordisk Inc | $126.58 | 5 |
| Lilly USA, LLC | $113.44 | 6 |
| Astrazeneca Pharmaceuticals LP | $102.39 | 6 |
| Lundbeck LLC | $77.14 | 4 |
What the 2025 payments were for
- Food and Beverage$1,219 · 57 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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