Steven Ayres, M.D.
NPI 1265488464 · Gastroenterology Physician · Great Falls, MT
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Ayres, M.D. is a Gastroenterology Physician provider in Great Falls, MT (NPI 1265488464).
Provider details
- NPI number
- 1265488464
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 22979 (CO)
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
20 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
655 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 106 | $245 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 74 | $77 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 46 | $175 |
| Diagnostic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43235 | 45 | $113 |
| Study of Esophagus to Assess Movement91010 | 39 | $61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 221 | 55 |
| Omeprazole | 51 | — |
| Metoclopramide Hcl | 32 | — |
| Rifaximinbrand: Xifaxan | 26 | — |
| Budesonidebrand: Budesonide Dr | 26 | — |
| Colestipol Hcl | 24 | — |
| Ondansetronbrand: Ondansetron Odt | 18 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2024-04-05
- Certified
- 2024-04-05
Frequently asked questions
- What is Steven Ayres's NPI number?
- Steven Ayres's National Provider Identifier (NPI) is 1265488464, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Ayres's specialty?
- Steven Ayres is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Ayres located?
- Steven Ayres's practice location on file with NPPES is 1401 25th St S, Great Falls, MT 59405-5183.
- What is Steven Ayres's phone number?
- The practice phone number listed in the NPPES registry for Steven Ayres is (406) 731-8888.
- Does Steven Ayres accept Medicare?
- Steven Ayres is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Ayres's NPI active?
- Yes — Steven Ayres's NPI (1265488464) is active in the NPPES registry as of the last update on 2024-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.