Healthcare provider profile · identity verified

Gregory J Streff, DO

Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease · GRAND BLANC, MI · NPI 1558314005

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Gregory J Streff, DO received $973.48 in general payments during 2025 across 44 reported records.

AstraZeneca Pharmaceuticals LP accounted for 19.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 22 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Hizentra, Ofev, Trelegy Ellipta.

Boehringer Ingelheim Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported OFEV as an associated drug or biological on 14236 records involving 6873 distinct recipient NPIs. Public Medicare Part D data also shows 50 claims for Ofev by this doctor in 2024.

CSL Behring reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Hizentra as an associated drug or biological on 13634 records involving 4691 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Hizentra by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 192 claims for Trelegy Ellipta by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$973.48

44 reported records · 21 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $190.1719.5%82025
HARMONY BIOSCIENCES LLC Unresolved — no canonical attribution shown $98.5310.1%32025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $72.827.5%42025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $60.966.3%32025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $58.446.0%32025
Insmed, Inc. Unresolved — no canonical attribution shown $52.425.4%22025
Amgen Inc. Unresolved — no canonical attribution shown $46.434.8%22025
Avadel CNS Pharmaceuticals, LLC Unresolved — no canonical attribution shown $42.264.3%22025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $42.224.3%22025
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) Unresolved — no canonical attribution shown $39.684.1%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $35.273.6%22025
United Therapeutics Corporation Unresolved — no canonical attribution shown $32.733.4%12025
GENZYME CORPORATION Unresolved — no canonical attribution shown $32.213.3%12025
Boston Scientific Corporation Unresolved — no canonical attribution shown $31.033.2%12025
Philips North America LLC Unresolved — no canonical attribution shown $29.523.0%22025
Viatris Specialty LLC Unresolved — no canonical attribution shown $22.632.3%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $21.512.2%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $18.871.9%12025
Electromed, Inc. Unresolved — no canonical attribution shown $15.671.6%12025
CSL Behring Unresolved — no canonical attribution shown $15.501.6%12025
Grifols USA, LLC Unresolved — no canonical attribution shown $14.611.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$973.4844

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $145.94 5 2025
Source payment records
WAKIX
Normalized: wakix
Drug HARMONY BIOSCIENCES LLC $98.53 3 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. $74.43 3 2025
Source payment records
OFEV
Normalized: ofev
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $60.96 3 2025
Source payment records
XYWAV
Normalized: xywav
Drug JAZZ PHARMACEUTICALS INC. $58.44 3 2025
Source payment records
Arikayce
Normalized: arikayce
Drug Insmed, Inc. $52.42 2 2025
Source payment records
TEZSPIRE
Normalized: tezspire
Biological Amgen Inc. $46.43 2 2025
Source payment records
FASENRA
Normalized: fasenra
Biological AstraZeneca Pharmaceuticals LP $44.23 3 2025
Source payment records
LUMRYZ
Normalized: lumryz
Drug Avadel CNS Pharmaceuticals, LLC $42.26 2 2025
Source payment records
NUCALA
Normalized: nucala
Biological GlaxoSmithKline, LLC. $40.38 2 2025
Source payment records
LifeVest
Normalized: lifevest
Device ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $39.68 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $35.27 2 2025
Source payment records
Tyvaso
Normalized: tyvaso
Drug United Therapeutics Corporation $32.73 1 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $32.44 2 2025
Source payment records
WATCHMAN FLX
Normalized: watchman flx
Device Boston Scientific Corporation $31.03 1 2025
Source payment records
Vest Therapy Und
Normalized: vest therapy und
Device Philips North America LLC $29.52 2 2025
Source payment records
YUPELRI
Normalized: yupelri
Drug Viatris Specialty LLC $22.63 1 2025
Source payment records
WINREVAIR
Normalized: winrevair
Biological Merck Sharp & Dohme LLC $21.51 1 2025
Source payment records
Sunosi
Normalized: sunosi
Drug Axsome Therapeutics, Inc. $18.87 1 2025
Source payment records
SMARTVEST
Normalized: smartvest
Device Electromed, Inc. $15.67 1 2025
Source payment records
Hizentra
Normalized: hizentra
Biological CSL Behring $15.50 1 2025
Source payment records
Prolastin-C Liquid
Normalized: prolastin c liquid
Biological Grifols USA, LLC $14.61 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
Hizentra
hizentra
2025 Hizentra 2024 12
Beneficiary count suppressed
exact normalized Medicare Part D
OFEV
ofev
2025 Ofev 2024 50
Beneficiary count suppressed
exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 192 exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 OFEV
open payments reported associated product
CMS Open Payments — General Payments
14236 supporting records · 6873 recipient NPIs · example record 1221811762
Ofev · 2024
Exact normalized brand match · 1 Part D row
50 suppressed by CMS
CSL Behring
Exact reporting entity; no affiliate inference
2025 Hizentra
open payments reported associated product
CMS Open Payments — General Payments
13634 supporting records · 4691 recipient NPIs · example record 1232339012
Hizentra · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
192 75

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
Montelukast SodiumMontelukast Sodium276123
Albuterol Sulfate HfaAlbuterol Sulfate208121
Trelegy ElliptaFluticasone/Umeclidin/Vilanter19275
Carbidopa-Levodopa ErCarbidopa/Levodopa9746
Pantoprazole SodiumPantoprazole Sodium9146
PrednisonePrednisone9060
Ventolin HfaAlbuterol Sulfate7445
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr5419
Stiolto RespimatTiotropium Br/Olodaterol Hcl5428
Breo ElliptaFluticasone/Vilanterol5021
DexamethasoneDexamethasone5045
Fluticasone-SalmeterolFluticasone Propion/Salmeterol5026
OfevNintedanib Esylate50suppressed
AzithromycinAzithromycin4528
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate4327
Metoprolol TartrateMetoprolol Tartrate3819
Spiriva RespimatTiotropium Bromide3514
Breztri AerosphereBudesonide/Glycopyr/Formoterol3417
Fluticasone PropionateFluticasone Propionate3220
HydrochlorothiazideHydrochlorothiazide2816
Advair HfaFluticasone Propion/Salmeterol1913
Wixela InhubFluticasone Propion/Salmeterol1711
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1512
Carbidopa-LevodopaCarbidopa/Levodopa15suppressed
Combivent RespimatIpratropium/Albuterol Sulfate14suppressed
Incruse ElliptaUmeclidinium Bromide14suppressed
ClonazepamClonazepam13suppressed
FurosemideFurosemide13suppressed
Qvar RedihalerBeclomethasone Dipropionate13suppressed
HizentraImmun Glob G(Igg)/Pro/Iga 0-5012suppressed
Prolastin CAlpha-1-Proteinase Inhibitor12suppressed
Tiotropium BromideTiotropium Bromide12suppressed
Azelastine HclAzelastine Hcl11suppressed
BreynaBudesonide/Formoterol Fumarate11suppressed
DuleraMometasone/Formoterol11suppressed
Zolpidem TartrateZolpidem Tartrate11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $973.48 · 44 records AstraZeneca Pharmaceuticals LP AIRSUPRA, Arikayce, DUPIXENT, FASENRA, Hizentra, LUMRYZ, LifeVest, NUCALA, OFEV, Prolastin-C Liquid, SMARTVEST, Sunosi, TEZSPIRE, TRELEGY ELLIPTA, Tyvaso, Vest Therapy Und, WAKIX, WATCHMAN FLX, WINREVAIR, XYWAV, YUPELRI, ZEPBOUND 3
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error