Jeffrey Leflein, MD
Allergy & Immunology · Ypsilanti, MINPI 1578544870
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $8,710 of the $11,324 with a category attached, or 76.9%. Novartis accounts for 91.5% of it on its own, with 12 other manufacturers making up the rest. Reporting peaked in 2022 at $5,633 and has fallen 94.4% since, to $314 in 2025.
Across 48 payments — averaging $235.93 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$10K
- Regeneron$272
- AstraZeneca$170
- Sanofi$97
- GSK$94
- Alk-abello, Inc$83
- plus $242 from 7 others
Across 1,049 payments — averaging $7546.40 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Regeneron$2.5M
- Novartis$1.2M
- GSK$782K
- Sanofi US Services Inc.$586K
- LEO Pharma AS$528K
- Astrazeneca UK Limited$484K
- plus $1.9M from 11 others
What the payments were for
- Consulting fees$8,71077%
- Travel & lodging$1,29611%
- Food & beverage$1,28311%
- Education$360%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Novartis | 12 | $10,367 |
| Regeneron | 3 | $272 |
| AstraZeneca | 6 | $170 |
| Sanofi | 3 | $97 |
| GSK | 7 | $94 |
| Alk-abello, Inc | 5 | $83 |
| CSL Behring | 3 | $74 |
| Lilly USA, LLC | 2 | $61 |
| Kaleo, Inc. | 2 | $45 |
| LEO Pharma Inc. | 1 | $26 |
| Grifols USA, LLC | 1 | $23 |
| Bio Products Laboratory USA, Inc. | 2 | $12 |
| Pfizer | 1 | $1 |
How this compares
$11,324 in reported general payments places this provider in the 80th percentile of 119 allergy & immunology providers in Michigan.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| HaegardaC1 Esterase Inhibitor | 26 | $590,557 |
| Breo ElliptaFluticasone/Vilanterol | 49 | $39,063 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 39 | $31,836 |
| SymbicortBudesonide/Formoterol Fumarate | 68 | $24,411 |
| Fluticasone-SalmeterolFluticasone Propion/Salmeterol | 70 | $15,926 |
| Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate | 43 | $12,742 |
| Qvar RedihalerBeclomethasone Dipropionate | 27 | $10,275 |
| DuleraMometasone/Formoterol | 14 | $7,248 |
| Pulmicort FlexhalerBudesonide | 17 | $7,227 |
| Montelukast Sodium | 363 | $5,883 |
| Advair HfaFluticasone Propion/Salmeterol | 15 | $5,387 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 104 | $4,035 |
| Epinephrine | 15 | $3,544 |
| Ipratropium Bromide | 64 | $2,021 |
| Theophylline ErTheophylline Anhydrous | 11 | $1,437 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| CSL BehringHaegarda | $74 | $590,55726 claims |
| GSKBreo Ellipta, Trelegy Ellipta | $94 | $70,89988 claims |
| AstraZenecaSymbicort, Pulmicort Flexhaler | $170 | $31,63985 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 80th percentile of 119 allergy & immunology providers in Michigan.
Other allergy & immunology in Ypsilanti
- Anna KovalszkiYpsilanti$20K
- Steven StrykCanton$949K
- Hassan NasirWest Branch$736K
- Theodore KelbelGrand Rapids$695K
- Nicholas HartogGrand Rapids$575K
- Kathleen DassOak Park$446K
- Pulin PatelMount Clemens$431K
- Alan BaptistAnn Arbor$168K
- Mohsen NasirSaginaw$99K
- Abdul Husein BahrainwalaRoyal Oak$47K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.