Mark Daniel Lejsek, APRN-PMHNP-BC
NPI 1891016010ActiveIndividual· Nurse Practitioner, Psych/Mental Health· The Woodlands, TX
Nurse Practitioner, Psych/Mental Health (APRN-PMHNP-BC) with Family Psychiatry of the Woodlands PA, practicing in The Woodlands, Texas. Their prescriptions cost Medicare Part D more than their services did: $271,531 for 3,200 claims, against $31,856 paid for services in 2024. Alkermes, Inc. was the largest of 17 companies reporting payments in 2025, $2,240 in all, mostly food and beverage.
Overview
| NPI | 1891016010 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN-PMHNP-BC |
| Sole proprietor | No |
| NPI issued | Jun 22, 2010 |
| Last updated in NPPES | Mar 22, 2021 |
| Certified by provider | Mar 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | AP114710 | TX |
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 - Nurse Practitioner (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 94 |
|---|---|
| Services billed | 442 across 5 procedure codes |
| Paid by Medicare | $31,856 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,200 · 5,023 30-day fills |
|---|---|
| Patients | 178 |
| Total drug cost | $271,531 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Family Psychiatry of the Woodlands PAThe Woodlands, TX · 5 clinicians
Industry payments (Open Payments)
- 2025$2,240 · 134 payments from 17 companies
- 2024$2,589 · 182 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alkermes, Inc. | $421.24 | 23 |
| Abbvie Inc. | $384.79 | 28 |
| Tris Pharma Inc | $281.65 | 16 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $265.90 | 12 |
| Corium, LLC | $227.94 | 10 |
What the 2025 payments were for
- Food and Beverage$2,240 · 134 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 37 psychiatric nurse practitioners in The Woodlands · All psychiatric nurse practitioners in Texas