Medicare Enrolled

Dr. Gregory Trolley, M.D.

Neurology · Houston, TX
Practice pattern: Clinical Cardiology— Primarily office-based clinical cardiology
Low-engagement
2002 HOLCOMBE BLVD, Houston, TX 77030
7137911414
In practice since 2009 (17 years)
NPI: 1609019652 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Trolley from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Trolley

Dr. Gregory Trolley is a neurology in Houston, TX, with 17 years in practice. Based on federal Medicare data, Dr. Trolley performed 1,620 Medicare services across 1,249 unique beneficiaries.

Between the years covered by Open Payments, Dr. Trolley received a total of $6,750 from 46 pharmaceutical and/or device companies across 347 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Trolley is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 17 years in practice▲ Top 21% volume in TX$ $6,750 industry payments

Medicare Practice Summary

Medicare Utilization ↗
1,620
Medicare services
Top 21% in TX for neurology
1,249
Unique beneficiaries
$100
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~95 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

ProcedureVolumeAvg. paidAvg. submitted
Office visit, established patient (30-39 min)1,107$84$160
New patient office visit (45-59 min)348$117$250
Office visit, established patient (20-29 min)68$56$140
Measurement of brain wave activity (eeg), awake and drowsy63$285$480
Office visit, established patient, complex (40-54 min)20$123$275
EEG, extended monitoring14$328$575
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.

Industry Payment Transparency

Open Payments through 2024 ↗
$6,750
Total received (2018-2024)
Avg $964/year across 7 years
Top 34% in TX for neurology
46
Companies
347
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$6,737 (99.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$14 (0.2%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$1,314
2023
$1,449
2022
$716
2021
$710
2020
$374
2019
$661
2018
$1,525

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
Amgen Inc.
$676
Teva Pharmaceuticals USA, Inc.
$540
Novartis Pharmaceuticals Corporation
$504
PFIZER INC.
$438
Lilly USA, LLC
$378
Biogen, Inc.
$348
Neurocrine Biosciences, Inc.
$267
UCB, Inc.
$257
Allergan Inc.
$245
Lundbeck LLC
$245
AbbVie Inc.
$240
Eisai Inc.
$218
Celgene Corporation
$206
Genentech USA, Inc.
$183
ABBVIE INC.
$169
ARGENX US, INC.
$143
Biohaven Pharmaceuticals, Inc.
$133
Allergan, Inc.
$131
Acorda Therapeutics, Inc
$130
Biohaven Pharmaceutical Holding Company Ltd.
$122
Alexion Pharmaceuticals, Inc.
$116
Adamas Pharmaceuticals, Inc.
$93
Kyowa Kirin, Inc.
$90
GE HEALTHCARE
$85
Octapharma USA, Inc.
$80
ACADIA Pharmaceuticals Inc
$64
CATALYST PHARMACEUTICALS, INC.
$63
GENZYME CORPORATION
$60
SK Life Science, Inc.
$57
GE Healthcare
$53
GE HealthCare
$45
InSightec,Inc
$43
Sunovion Pharmaceuticals Inc.
$39
EMD Serono, Inc.
$36
Otsuka America Pharmaceutical, Inc.
$34
Grifols USA, LLC
$27
Alnylam Pharmaceuticals Inc.
$25
JAZZ PHARMACEUTICALS INC.
$23
Mitsubishi Tanabe Pharma America, Inc.
$21
Nevro Corp.
$21
Medtronic, Inc.
$20
Supernus Pharmaceuticals, Inc.
$19
LivaNova USA, Inc.
$17
Avion Pharmaceuticals
$17
ARBOR PHARMACEUTICALS, INC.
$15
AstraZeneca Pharmaceuticals LP
$14
Top 3 companies account for 25.5% of total payments
Associated products mentioned in payments ›
ADUHELM · AGAMREE · AIMOVIG · AJOVY · AMYVID · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Aimovig · Austedo XR · BOTOX · BOTOX THERAPEUTIC · BRILINTA · Briviact · COMIRNATY · COPAXONE · DUOPA · Dhivy · EMGALITY · EPIDIOLEX · Enspryng · Exablate · FIRDAPSE · GILENYA · GOCOVRI · Gamunex-C · Horizant · INBRIJA · INGREZZA · KESIMPTA · KISUNLA · LEMTRADA · Leqembi · MAVENCLAD · MAYZENT · NAMZARIC · NORTHERA · NOURIANZ · NUEDEXTA · NUPLAZID · NURTEC ODT · Neupro · Nourianz · OCREVUS · ONPATTRO · Ocrevus · Omnia · Ongentys · PANZYGA · PERCEPT PC BRAINSENSE · QULIPTA · REXULTI · Radicava · SOLIRIS · Soliris · TECFIDERA · TROKENDI XR · TYSABRI · UBRELVY · ULTOMIRIS · VNS - Sentiva · VUMERITY · VYEPTI · VYVGART · Vimpat · ZEPOSIA
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →

Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Equivalent to $417 per 100 Medicare services performed
Looking for a neurology in Houston?
Compare neurologys in the Houston area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Neurologys within 10 mi
382
Per 100K population
8.0
County median income
$73,104
Nearest hospital
MEMORIAL HERMANN - TEXAS MEDICAL CENTER
0.0 mi

Data Sources

Provider Registry NPPESWeekly updates
Medicare Enrollment PECOSMonthly updates
Practice Data Medicare Util.Annual (CY lag)
Industry Payments Open PaymentsCY 2024
Disciplinary History— Not publicN/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →

Summary

Dr. Trolley is a clinical cardiology specialist, with above-average Medicare volume (top 21% in TX), and low-engagement industry engagement, with 17 years of practice experience.

This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →

Frequently Asked Questions

Is Dr. Trolley experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Trolley performed 1,107 office visit, established patient (30-39 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Trolley receive payments from pharmaceutical companies?
Yes. Dr. Trolley received a total of $6,750 from 46 companies across 347 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Trolley's costs compare to other neurologys in Houston?
Dr. Trolley's average Medicare payment per service is $100. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Trolley) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →