Klaus-Dieter K. Lessnau, MD
NPI 1083684708ActiveIndividual· Internal Medicine, Sleep Medicine· New York, NY
Internal Medicine, Sleep Medicine (MD) with 14 Street Medical PC and 1 other group, practicing in New York, New York. Their prescriptions cost Medicare Part D more than their services did: $307,385 for 707 claims, against $59,086 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 13 companies reporting payments in 2025, $2,912 in all, mostly food and beverage.
Overview
| NPI | 1083684708 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 25, 2006 |
| Last updated in NPPES | Mar 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Sleep Medicine Primary | 207RS0012X | 137901 | NY |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 206484 | NY |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 206484 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 154 |
|---|---|
| Services billed | 1,065 across 36 procedure codes |
| Paid by Medicare | $59,086 |
Part D prescriptions in 2024
| Prescriptions (claims) | 707 · 1,233 30-day fills |
|---|---|
| Patients | 142 |
| Total drug cost | $307,385 |
| Generic share | 59% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine, Sleep Medicine |
| Telehealth | Offers telehealth |
Medical groups
- 14 Street Medical PCNew York, NY · 16 clinicians
- Diego A Diaz MD PCNew York, NY · 2 clinicians
Industry payments (Open Payments)
- 2025$2,912 · 121 payments from 13 companies
- 2024$3,228 · 130 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $957.89 | 46 |
| Glaxosmithkline, LLC. | $831.74 | 46 |
| Avadel Cns Pharmaceuticals, LLC | $224.75 | 2 |
| Jazz Pharmaceuticals Inc. | $187.39 | 3 |
| Insmed, Inc. | $175.85 | 8 |
What the 2025 payments were for
- Food and Beverage$2,762 · 120 payments
- Consulting Fee$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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