Guy Weiss, M.D.
NPI 1598084030 · Gastroenterology Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guy Weiss, M.D. is a Gastroenterology Physician provider in Buffalo, NY (NPI 1598084030).
Provider details
- NPI number
- 1598084030
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
876 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 206 | $17 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 86 | $180 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 84 | $102 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 81 | $194 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 78 | $109 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Linaclotidebrand: Linzess | 105 | 31 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 61 | 54 |
| Prucalopride Succinatebrand: Motegrity | 61 | 12 |
| Omeprazole | 57 | 17 |
| Pantoprazole Sodium | 47 | 16 |
| Mesalamine | 23 | 11 |
| Famotidine | 17 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,706 across 29 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-24
- Last updated
- 2020-08-03
- Certified
- 2020-08-03
Frequently asked questions
- What is Guy Weiss's NPI number?
- Guy Weiss's National Provider Identifier (NPI) is 1598084030, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guy Weiss's specialty?
- Guy Weiss is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Guy Weiss located?
- Guy Weiss's practice location on file with NPPES is 462 Grider St, Buffalo, NY 14215-3021.
- What is Guy Weiss's phone number?
- The practice phone number listed in the NPPES registry for Guy Weiss is (716) 898-4226.
- Does Guy Weiss accept Medicare?
- Guy Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guy Weiss's NPI active?
- Yes — Guy Weiss's NPI (1598084030) is active in the NPPES registry as of the last update on 2020-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.