Psychiatry and Neurology, Neurology · Houston, TX
NPI
1609019652
Since 2009
Specialty
Psychiatry and Neurology, Neurology
Code 2084N0400X
Group practices
2
Medicare group memberships
Hospitals
2
Hospital affiliations
2002 Holcombe Blvd
Houston, TX, 77030
Phone (713) 791-1414
Groups this clinician bills Medicare through
Medicare paid, 2024
$150K
1,655 services
Medicare patients, 2024
1,026
Average age 76
Drug cost, 2024
$2.9M
9,897 prescriptions
Company payments, 2025
$1,742
From 23 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Gregory C Trolley was code 99214 (office e&m - established), 1,133 times for 767 patients. In total Gregory C Trolley billed 1,655 services in 12 codes, and Medicare paid $150K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2009-04-07.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 1,133 | 767 | $74.59 | $85K |
| 99204 Office E&M - New | Office | 315 | 314 | $98.39 | $31K |
| 95816 Neurologic | Office | 74 | 70 | $247.76 | $18K |
| 99215 Office E&M - Established | Office | 55 | 55 | $117.32 | $6,453 |
| 99213 Office E&M - Established | Office | 37 | 36 | $35.99 | $1,332 |
| 95819 Neurologic | Office | 21 | 21 | $307.72 | $6,462 |
By year: 2022 $165K for 1,664 services; 2023 $164K for 1,630 services; 2024 $150K for 1,655 services.
Medicare prescription drug claims, 2024
In 2024, the drug Gregory C Trolley prescribed most often to Medicare patients was Donepezil Hcl, with 1,559 prescriptions and refills. In total Gregory C Trolley wrote 9,897 Medicare prescriptions that cost $2.9M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Donepezil Hcl Generic | 1,559 | 3,907 | 497 | $16K |
| Memantine Hcl Generic | 1,370 | 3,215 | 435 | $43K |
| Carbidopa-Levodopa Carbidopa/Levodopa | 813 | 1,903 | 225 | $22K |
| Gabapentin Generic | 806 | 1,767 | 288 | $22K |
| Levetiracetam Generic | 693 | 1,741 | 208 | $21K |
| Topiramate Generic | 355 | 810 | 114 | $4,219 |
| Pregabalin Generic | 276 | 585 | 110 | $9,188 |
| Primidone Generic | 260 | 657 | 89 | $5,986 |
| Clonazepam Generic | 227 | 378 | 72 | $2,401 |
| Zonisamide Generic | 212 | 537 | 62 | $5,087 |
| Lacosamide Generic | 159 | 332 | 43 | $19K |
| Carbidopa-Levodopa Er Carbidopa/Levodopa | 153 | 359 | 47 | $6,026 |
| Clopidogrel Clopidogrel Bisulfate | 143 | 337 | 44 | $1,078 |
| Duloxetine Hcl Generic | 142 | 340 | 48 | $2,811 |
| Citalopram Hbr Citalopram Hydrobromide | 137 | 273 | 41 | $628 |
Brand drugs: - claims; generic drugs: 9,362 claims; opioid claims: 74.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Gregory C Trolley $1,742 ($1,742 in general payments such as food, travel and fees) from 23 companies. The largest payer was Pfizer Inc. with $288.
| Company | Payments | Amount |
|---|---|---|
| Pfizer Inc. PFE | 23 | $288 |
| Lundbeck LLC | 20 | $253 |
| UCB, Inc. UCB.BR | 3 | $152 |
| Teva Pharmaceuticals USA, Inc. TEVA | 4 | $130 |
| ACADIA Pharmaceuticals Inc ACAD | 6 | $126 |
| LivaNova USA, Inc. LIVN | 5 | $125 |
| Novartis Pharmaceuticals Corporation NVS | 6 | $120 |
| Abbvie Inc. ABBV | 5 | $97.36 |
| Eisai Inc. 4523.T | 3 | $80.96 |
| Celgene Corporation BMY | 3 | $58.58 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.