Mark Ligorski, MD
NPI 1659465003ActiveIndividual· Psychiatry & Neurology, Psychiatry· Danbury, CT
Psychiatry & Neurology, Psychiatry (MD) in Danbury, Connecticut, licensed in CT, with an NPI issued in October 2006. Their prescriptions cost Medicare Part D more than their services did: $323,732 for 2,609 claims, against $83,390 paid for services in 2024. Vanda Pharmaceuticals Inc. was the largest of 13 companies reporting payments in 2025, $1,009 in all, mostly food and beverage.
Overview
| NPI | 1659465003 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 2, 2006 |
| Last updated in NPPES | Aug 11, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 028054 | CT |
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 (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 108 |
|---|---|
| Services billed | 1,087 across 4 procedure codes |
| Paid by Medicare | $83,390 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,609 · 4,389 30-day fills |
|---|---|
| Patients | 187 |
| Total drug cost | $323,732 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$1,009 · 47 payments from 13 companies
- 2024$2,935 · 35 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vanda Pharmaceuticals Inc. | $164.68 | 9 |
| Takeda Pharmaceuticals U.S.A., Inc. | $140.71 | 5 |
| Abbvie Inc. | $137.89 | 6 |
| Neurocrine Biosciences, Inc. | $120.28 | 5 |
| Corium, LLC | $90.89 | 5 |
What the 2025 payments were for
- Food and Beverage$1,009 · 47 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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