Gregory Shannon, M.D.
Specialist · Sugar Land, TX
Gregory Shannon, M.D. is a specialist with a practice address in Sugar Land, Texas, and NPI 1730148495, issued on Mar 21, 2006. Check the license with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Shannon
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 17510 W Grand Pkwy S, Sugar Land, TX 77479
- Phone
- (281) 201-1338
- Enumerated
- Mar 21, 2006
- Entity
- Type 1 · individual
Also registered at 17510 W Grand Pkwy S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Shannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
65% more Medicare Part D claims than the average specialist in 2024
2,516 Medicare Part D claims for 1,080 beneficiaries, against an average of 1,524 among the 12,477 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Omeprazole522 claims
- Peg 3350-Electrolyte498 claims
- Famotidine478 claims
- Sucralfate147 claims
- Clenpiq126 claims
- Sod Sulf-Potass Sulf-Mag Sulf102 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 Medicare quality 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,329.82
63 payments, mostly food and beverage; the largest payer was Abbvie Inc.. The 9,482 providers of this specialty with any payment received $4,756.65 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.
2 hospital and facility affiliations
- Gastroenterology Associates OF Texas PASugar Land, TX
- Houston Regional Gastroenterology Institute PLLCSugar Land, TX
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Specialist providers in Texas
There are 2,380 specialist records in Texas.
Other specialist records in Texas
- Beverly AbbottLongview, TX1164724522
- Magdy Abdelsayed, M.D.Baytown, TX1376634857
- Robin Abels, OTRCarrollton, TX1972660025
- Amr Abouleish, M.D.Galveston, TX1083604193
- Paul Abrell, ATC, LEl Paso, TX1881668200
- Danielle AchAustin, TX1538655030
- Daniel Acosta, M.D.Corpus Christi, TX1275539405
- Patricia Acosta, PHYSICAL THERAPISTEl Paso, TX1306953062
- Donald Adams, M.D.San Antonio, TX1417033564
- William Adams, M.D.Dallas, TX1134153497
Common questions
What is Gregory Shannon, M.D.'s NPI number?
Gregory Shannon, M.D.'s National Provider Identifier (NPI) is 1730148495, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Shannon, M.D. located?
The NPPES record lists a practice address at 17510 W Grand Pkwy S, Sugar Land, TX, 77479. Phone: (281) 201-1338. Providers update this record themselves, so call before visiting.
How can I verify Gregory Shannon, M.D.'s license?
Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Shannon, M.D. prescribe under Medicare Part D?
In 2024, Gregory Shannon, M.D. had 2,516 Medicare Part D claims for 1,080 beneficiaries; the average among specialist prescribers was 1,524. Part D covers Medicare prescriptions only.
What is Gregory Shannon, M.D.'s Medicare quality 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.