Xiaojun Guo, M.D.
NPI 1427269257ActiveIndividual· Internal Medicine· Flushing, NY
Internal Medicine (M.D.) with Gxj Medical Healthcare PC, practicing in Flushing, New York. Their prescriptions cost Medicare Part D more than their services did: $1,678,813 for 6,969 claims, against $45,004 paid for services in 2024. Amgen Inc. was the largest of 13 companies reporting payments in 2025, $762.40 in all, mostly food and beverage.
Overview
| NPI | 1427269257 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 24, 2007 |
| Last updated in NPPES | Nov 25, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 250996 | NY |
| Internal Medicine | 207R00000X | M-13700 | ID |
| Hospitalist | 208M00000X | 50702 | WI |
| Hospitalist | 208M00000X | 62117 | MN |
| Hospitalist | 208M00000X | 250996 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 783 across 34 procedure codes |
| Paid by Medicare | $45,004 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,969 · 10,439 30-day fills |
|---|---|
| Patients | 315 |
| Total drug cost | $1,678,813 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Gxj Medical Healthcare PCFlushing, NY · 2 clinicians
Industry payments (Open Payments)
- 2025$762.40 · 36 payments from 13 companies
- 2024$495.84 · 25 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $130.56 | 6 |
| Astrazeneca Pharmaceuticals LP | $99.71 | 5 |
| Intra-Sana Laboratories | $73.08 | 3 |
| Abbvie Inc. | $71.27 | 4 |
| Pfizer Inc. | $70.01 | 3 |
What the 2025 payments were for
- Food and Beverage$762.40 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 356 internal medicine physicians in Flushing · All internal medicine physicians in New York