Gregory J. Streff, DO
NPI 1558314005ActiveIndividual· Internal Medicine, Pulmonary Disease· Grand Blanc, MI
Internal Medicine, Pulmonary Disease (DO) in Grand Blanc, Michigan, licensed in MI, with an NPI issued in May 2006. Their prescriptions cost Medicare Part D more than their services did: $1,636,251 for 2,083 claims, against $111,100 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $973.48 in all, mostly food and beverage.
Overview
| NPI | 1558314005 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 18, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 5101008684 | MI |
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 - Pulmonary Disease (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 547 |
|---|---|
| Services billed | 1,683 across 25 procedure codes |
| Paid by Medicare | $111,100 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,083 · 4,489 30-day fills |
|---|---|
| Patients | 540 |
| Total drug cost | $1,636,251 |
| Generic share | 57% of claims |
Industry payments (Open Payments)
- 2025$973.48 · 44 payments from 21 companies
- 2024$2,330 · 112 payments from 29 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $190.17 | 8 |
| Harmony Biosciences LLC | $98.53 | 3 |
| Glaxosmithkline, LLC. | $72.82 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $60.96 | 3 |
| Jazz Pharmaceuticals Inc. | $58.44 | 3 |
What the 2025 payments were for
- Food and Beverage$973.48 · 44 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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