Xiaojun Yan, MD
NPI 1033110788ActiveIndividual· Internal Medicine, Pulmonary Disease· Brooklyn, NY
Internal Medicine, Pulmonary Disease (MD) in Brooklyn, New York, licensed in NY, with an NPI issued in August 2005. Their prescriptions cost Medicare Part D more than their services did: $3,855,223 for 8,289 claims, against $378,853 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 14 companies reporting payments in 2025, $15,780 in all, mostly speaking and faculty fees. Lists Maimonides Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1033110788 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 3, 2005 |
| Last updated in NPPES | Mar 24, 2011 |
| Reactivated | Mar 29, 2006 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 196486 | NY |
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 - Pulmonary Disease (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 856 |
|---|---|
| Services billed | 6,175 across 25 procedure codes |
| Paid by Medicare | $378,853 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,289 · 9,264 30-day fills |
|---|---|
| Patients | 941 |
| Total drug cost | $3,855,223 |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Pulmonary Disease |
Hospital affiliations
- Maimonides Medical CenterBrooklyn, NY
- Mount Sinai Beth IsraelNew York, NY
Industry payments (Open Payments)
- 2025$15,780 · 89 payments from 14 companies
- 2024$32,050 · 111 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $14,461 | 42 |
| Glaxosmithkline, LLC. | $392.91 | 16 |
| Genzyme Corporation | $335.27 | 10 |
| Insmed, Inc. | $102.75 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $94.69 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$13,092 · 10 payments
- Food and Beverage$2,688 · 79 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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