Xiaoxi Ouyang, MD
NPI 1649479064ActiveIndividual· Internal Medicine· Nashua, NH
Internal Medicine (MD) in Nashua, New Hampshire, trained at McGill University Faculty of Dentistry (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $209,745 for 1,475 claims, against $28,428 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) reported $194.44 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1649479064 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 16, 2007 |
| Last updated in NPPES | Aug 19, 2025 |
| Certified by provider | Aug 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 16870 | NH |
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 (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 122 |
|---|---|
| Services billed | 356 across 23 procedure codes |
| Paid by Medicare | $28,428 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,475 · 3,440 30-day fills |
|---|---|
| Patients | 175 |
| Total drug cost | $209,745 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | McGill University Faculty of Dentistry |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Parkland Medical CenterDerry, NH
Industry payments (Open Payments)
- 2025$194.44 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $194.44 | 2 |
What the 2025 payments were for
- Food and Beverage$194.44 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 81 internal medicine physicians in Nashua · All internal medicine physicians in New Hampshire