Stephanie Judd Irwin, M.D.
NPI 1831328707 · Gastroenterology Physician · Ashland, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Judd Irwin, M.D. is a Gastroenterology Physician provider in Ashland, WI (NPI 1831328707).
Provider details
- NPI number
- 1831328707
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4301094318 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 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
28 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 | 16 | $238 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 12 | $80 |
Typical Medicare-allowed amounts for these services range $80–$238 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 76 | 42 |
| Pantoprazole Sodium | 36 | 15 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 36 | 36 |
| Famotidine | 24 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 22 | 21 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 17 | 17 |
| Adalimumab |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-13
- Last updated
- 2024-11-15
- Certified
- 2021-03-22
Frequently asked questions
- What is Stephanie Judd Irwin's NPI number?
- Stephanie Judd Irwin's National Provider Identifier (NPI) is 1831328707, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Judd Irwin's specialty?
- Stephanie Judd Irwin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephanie Judd Irwin located?
- Stephanie Judd Irwin's practice location on file with NPPES is 1615 Maple Lane, Ashland, WI 54806.
- What is Stephanie Judd Irwin's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Judd Irwin is (715) 685-6010.
- Does Stephanie Judd Irwin accept Medicare?
- Stephanie Judd Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Judd Irwin's NPI active?
- Yes — Stephanie Judd Irwin's NPI (1831328707) is active in the NPPES registry as of the last update on 2024-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.