Lourin N. Chahin, MD
NPI 1902816333ActiveIndividual· Internal Medicine· Macomb, MI
Internal Medicine (MD) in Macomb, Michigan, licensed in MI, with an NPI issued in August 2006. Their prescriptions cost Medicare Part D more than their services did: $538,548 for 6,232 claims, against $176,594 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 6 companies reporting payments in 2025, $295.78 in all, mostly food and beverage. Lists Beaumont Hospital - Farmington Hills and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1902816333 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 8, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | LC079583 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 466 |
|---|---|
| Services billed | 2,295 across 32 procedure codes |
| Paid by Medicare | $176,594 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,232 · 13,134 30-day fills |
|---|---|
| Patients | 606 |
| Total drug cost | $538,548 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Beaumont Hospital - Farmington HillsFarmington Hills, MI
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
- Beaumont Hospital, TroyTroy, MI
Other facilities
- Beaumont Home HealthHome health agency · Troy, MI
Industry payments (Open Payments)
- 2025$295.78 · 11 payments from 6 companies
- 2024$321.00 · 9 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $113.40 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $76.52 | 4 |
| Pfizer Inc. | $40.26 | 2 |
| Exact Sciences Corporation | $32.77 | 2 |
| Amgen Inc. | $18.00 | 1 |
What the 2025 payments were for
- Food and Beverage$295.78 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Macomb
- 1730545310
- 1861218240
- 1033476767
- 1467749317
- 1245813179
- 1831394873
- 1124006333
- 1093769192