Robert Weiss
NPI 1861575953 · Gastroenterology Physician · Holyoke, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Weiss is a Gastroenterology Physician provider in Holyoke, MA (NPI 1861575953).
Provider details
- NPI number
- 1861575953
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 57667 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
678 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 212 | $134 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 99 | $174 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 66 | $256 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 62 | $123 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 54 | $88 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 895 | 223 |
| Dicyclomine Hcl | 174 | 44 |
| Famotidine | 108 | 32 |
| Pantoprazole Sodium | 102 | 31 |
| Ursodiol | 91 | 14 |
| Balsalazide Disodium | 57 | 11 |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 54 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-23
- Last updated
- 2011-02-11
Frequently asked questions
- What is Robert Weiss's NPI number?
- Robert Weiss's National Provider Identifier (NPI) is 1861575953, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Weiss's specialty?
- Robert Weiss is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Weiss located?
- Robert Weiss's practice location on file with NPPES is 10 Hospital Dr, Holyoke, MA 01040-6603.
- What is Robert Weiss's phone number?
- The practice phone number listed in the NPPES registry for Robert Weiss is (413) 534-1132.
- Does Robert Weiss accept Medicare?
- Robert Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Weiss's NPI active?
- Yes — Robert Weiss's NPI (1861575953) is active in the NPPES registry as of the last update on 2011-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.