Maria Tsao, M.D.
NPI 1336257278ActiveIndividual· Psychiatry & Neurology, Psychiatry· Fairfax, VA
Psychiatry & Neurology, Psychiatry (M.D.) in Fairfax, Virginia, trained at Georgetown University School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $1,065,829 for 1,841 claims, against $18,136 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 10 companies reporting payments in 2025, $2,851 in all, mostly food and beverage.
Overview
| NPI | 1336257278 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 29, 2006 |
| Last updated in NPPES | Mar 16, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 0101057741 | VA |
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 - Psychiatry (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 56 |
|---|---|
| Services billed | 282 across 3 procedure codes |
| Paid by Medicare | $18,136 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,841 · 2,465 30-day fills |
|---|---|
| Patients | 90 |
| Total drug cost | $1,065,829 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Director of Finance-County of Fairfax VAFairfax, VA · 174 clinicians
Industry payments (Open Payments)
- 2025$2,851 · 75 payments from 10 companies
- 2024$2,568 · 55 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $595.72 | 10 |
| Vanda Pharmaceuticals Inc. | $477.41 | 11 |
| Otsuka America Pharmaceutical, Inc. | $419.45 | 15 |
| E.R. Squibb & Sons, L.L.C. | $309.10 | 6 |
| Neurocrine Biosciences, Inc. | $293.23 | 11 |
What the 2025 payments were for
- Food and Beverage$2,851 · 75 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 79 psychiatrists in Fairfax · All psychiatrists in Virginia