Andrew Billnitzer, MD
NPI 1659758811ActiveIndividual· Psychiatry & Neurology, Neurology· Houston, TX
Psychiatry & Neurology, Neurology (MD) with Tmh Physician Associates PLLC and 1 other group, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $2,910,744 for 3,414 claims, against $171,599 paid for services in 2024. Noctrix Health, Inc. was the largest of 22 companies reporting payments in 2025, $3,041 in all, mostly food and beverage. Lists Houston Methodist Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1659758811 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 27, 2015 |
| Last updated in NPPES | Sep 6, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | S2238 | 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 - Neurology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 350 |
|---|---|
| Services billed | 16,827 across 29 procedure codes |
| Paid by Medicare | $171,599 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,414 · 5,553 30-day fills |
|---|---|
| Patients | 396 |
| Total drug cost | $2,910,744 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| 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 affiliations
- Houston Methodist HospitalHouston, TX
- Houston Methodist Sugarland HospitalSugar Land, TX
- Houston Methodist the Woodlands HospitalThe Woodlands, TX
- Houston Methodist West HospitalHouston, TX
Other facilities
- Providian Health Care IncHome health agency · Houston, TX
- Tirr Memorial HermannInpatient rehabilitation facility · Houston, TX
Industry payments (Open Payments)
- 2025$3,041 · 105 payments from 22 companies
- 2024$5,931 · 120 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Noctrix Health, Inc. | $587.95 | 2 |
| Abbvie Inc. | $554.17 | 28 |
| Acadia Pharmaceuticals Inc | $287.54 | 12 |
| Merz Pharmaceuticals, LLC | $259.34 | 10 |
| Neurocrine Biosciences, Inc. | $254.74 | 11 |
What the 2025 payments were for
- Food and Beverage$3,041 · 105 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other neurologists in Houston
- 1003022013
- 1003233057
- 1003846619
- 1013133768
- 1013910876
- 1013953082
- 1023463114
- 1033299623
- 1043576226
- 1053383307
- 1063953297
- 1073594537