Olga Waln, M.D.
NPI 1013133768ActiveIndividual· Psychiatry & Neurology, Neurology· Houston, TX
Psychiatry & Neurology, Neurology (M.D.) with Tmh Physician Associates PLLC and 1 other group, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $2,903,157 for 2,923 claims, against $252,714 paid for services in 2024. Noctrix Health, Inc. was the largest of 18 companies reporting payments in 2025, $2,823 in all, mostly food and beverage. Lists Houston Methodist Hospital as a hospital affiliation.
Overview
| NPI | 1013133768 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 18, 2007 |
| Last updated in NPPES | Dec 6, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | P3094 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 391 |
|---|---|
| Services billed | 29,362 across 30 procedure codes |
| Paid by Medicare | $252,714 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,923 · 5,435 30-day fills |
|---|---|
| Patients | 361 |
| Total drug cost | $2,903,157 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical groups
- Tmh Physician Associates PLLCKaty, TX · 1,690 clinicians
- Houston Methodist Specialty PhysiciansHouston, TX · 1,528 clinicians
Hospital affiliation
- Houston Methodist HospitalHouston, TX
Other facilities
- Tirr Memorial HermannInpatient rehabilitation facility · Houston, TX
Industry payments (Open Payments)
- 2025$2,823 · 93 payments from 18 companies
- 2024$2,538 · 114 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Noctrix Health, Inc. | $568.23 | 1 |
| Abbvie Inc. | $533.01 | 26 |
| Neurocrine Biosciences, Inc. | $274.93 | 13 |
| Acadia Pharmaceuticals Inc | $255.82 | 10 |
| Merz Pharmaceuticals, LLC | $232.90 | 9 |
What the 2025 payments were for
- Food and Beverage$2,748 · 92 payments
- Education$75.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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