Guy A. Weiss, M.D.
Gastroenterology Physician · Buffalo, NY
Guy A. Weiss, M.D. is a gastroenterology physician with a practice address in Buffalo, New York, and NPI 1598084030, issued on May 24, 2010. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Guy A. Weiss
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A125480 CA
Self-reported in NPPES; status is on the state search - Practice location
- 462 Grider St, Buffalo, NY 14215
- Phone
- (716) 898-4226
- Enumerated
- May 24, 2010
- Record last updated
- Aug 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160713001140); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Also registered at 462 Grider St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Saddam Abbadi, DOStudent in an Organized Health Care Education/Training Program1386494631
- Sharif Abbas, M.D.Student in an Organized Health Care Education/Training Program1376336792
- Sarah Abdelsayed, MDFamily Medicine Physician1093065138
- Elias Abou-Jaoude, MDInternal Medicine Physician1457932519
- Alexandra Abraham, RD CDNRegistered Dietitian1295165587
- Michael Abrams, PTPhysical Therapist1841355773
Verify Guy A. Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average gastroenterology physician in 2024
547 Medicare Part D claims for 174 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Linzess105 claims
- Gavilyte-C61 claims
- Motegrity61 claims
- Omeprazole57 claims
- Pantoprazole Sodium47 claims
- Mesalamine23 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $6,706.04
29 payments; by number, the most common kind was consulting fee; the largest payer was Regeneron Pharmaceuticals, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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 one group practice
- The Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Guy A. Weiss among 1,797 gastroenterology physician records in New York
Guy A. Weiss, M.D. is one of 1,797 gastroenterology physician records with a practice address in New York. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 73% of them.
- NPI issued2010 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 1999 among the 1,378 with a school on file
- Record last updated2020 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New York
There are 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in Buffalo → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Paula Burkard, MDBuffalo, NY 142151972551463
- Erin Ly, M.D.Buffalo, NY 142151740638725
- Thomas Mahl, MDBuffalo, NY 142151780633412
- Jan Novak, MDBuffalo, NY 142151427096239
- Navpreet Rana, DOBuffalo, NY 142151922535210
- Nahel Altaf Tunio, MDBuffalo, NY 142151275029266
- Aston Williams, MDBuffalo, NY 142141558423921
- Sehem Ghazala, M.D.Buffalo, NY 142201265846950
Common questions
What is Guy A. Weiss, M.D.'s NPI number?
Guy A. Weiss, M.D.'s National Provider Identifier (NPI) is 1598084030, issued on May 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Guy A. Weiss, M.D. located?
The NPPES record lists a practice address at 462 Grider St, Buffalo, NY, 14215. Phone: (716) 898-4226. Providers update this record themselves, so call before visiting.
How can I verify Guy A. Weiss, M.D.'s license?
Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Guy A. Weiss, M.D. prescribe under Medicare Part D?
In 2024, Guy A. Weiss, M.D. had 547 Medicare Part D claims for 174 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Guy A. Weiss, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.