Gregory Charles Trolley, M.D.
Neurology Physician · Houston, TX
Gregory Charles Trolley, M.D. is a neurology physician with a practice address in Houston, Texas, and NPI 1609019652, issued on Apr 7, 2009. Check the license (Texas UNSURE, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Charles Trolley
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- UNSURE TX
Self-reported in NPPES; status is on the state search - Practice location
- 2002 Holcombe Blvd, Houston, TX 77030
- Phone
- (713) 791-1414
- Enumerated
- Apr 7, 2009
- Record last updated
- Apr 7, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160707001962); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,382 in Texas → Look up another NPI →
Also registered at 2002 Holcombe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ahemad Ababor, PHARM DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1538845698
- Arqam AbdaliPsychiatry Physician1730615337
- Whitney Abner, LMSWSocial Worker1639726300
- Rigat AbrahaPharmacist1508975418
- Legi Abraham, RNRegistered Nurse1730014226
- Melissa Abraham, LMSWSocial Worker1205358280
Verify Gregory Charles Trolley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license UNSURECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.2 times the Medicare Part D claims of the average neurology physician in 2024
9,897 Medicare Part D claims for 1,948 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. 74 claims were for opioids.
Most prescribed
- Donepezil Hcl1,559 claims
- Memantine Hcl1,370 claims
- Carbidopa-Levodopa813 claims
- Gabapentin806 claims
- Levetiracetam693 claims
- Topiramate355 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,314.44
73 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Corpus Christi NeurologyCorpus Christi, TX
- Shea Physical Therapy Specialists LLCCorpus Christi, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Charles Trolley among 1,382 neurology physician records in Texas
Gregory Charles Trolley, M.D. is one of 1,382 neurology physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 55% of them.
- NPI issued2009 · 55% of these records are older, 41% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2007 · median 2003 among the 930 with a school on file
- Record last updated2009 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Texas
There are 1,382 neurology physician records in Texas.
All 1,382 in Texas → Every provider in Houston → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Stanley Appel, M.D.Houston, TX 770301124009113
- Igor Cherches, M.D.Houston, TX 770301942295522
- David Chiu, M.D.Houston, TX 770301073594537
- Howard Derman, M.D.Houston, TX 770301891776712
- Edward Escobar, DOHouston, TX 770301982685434
- Timea Hodics, MDHouston, TX 770301285633057
- Annette Howard, MDHouston, TX 770301508857665
- Julia Jones, M.D.Houston, TX 770301225024854
Common questions
What is Gregory Charles Trolley, M.D.'s NPI number?
Gregory Charles Trolley, M.D.'s National Provider Identifier (NPI) is 1609019652, issued on Apr 7, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Charles Trolley, M.D. located?
The NPPES record lists a practice address at 2002 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 791-1414. Providers update this record themselves, so call before visiting.
How can I verify Gregory Charles Trolley, M.D.'s license?
NPPES lists Texas license number UNSURE, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Charles Trolley, M.D. prescribe under Medicare Part D?
In 2024, Gregory Charles Trolley, M.D. had 9,897 Medicare Part D claims for 1,948 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Gregory Charles Trolley, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.