Michael Allan, MD
NPI 1558300822 · Gastroenterology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Allan, MD is a Gastroenterology Physician provider in Madison, WI (NPI 1558300822).
Provider details
- NPI number
- 1558300822
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45234-020 (WI)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,089 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) |
|---|---|---|
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 234 | $5 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 221 | $227 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 130 | $9 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 74 | $73 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 63 | $63 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 441 | 431 |
| Omeprazole | 99 | 25 |
| Azathioprine | 55 | 17 |
| Pantoprazole Sodium | 47 | 11 |
| Budesonidebrand: Budesonide Dr | 39 | 17 |
| Lipase/Protease/Amylasebrand: Creon | 36 | — |
| Colestipol Hcl | 34 | — |
Practice location
Mailing address
Additional practice locations (1)
- 700 S Park StDean St. Mary'S Outpatient CenterMadison, WI 53715-1830Phone: (608) 260-2900Fax: (608) 260-2977
Registry dates
- Enumerated
- 2006-06-05
- Last updated
- 2020-10-27
- Certified
- 2020-10-27
Frequently asked questions
- What is Michael Allan's NPI number?
- Michael Allan's National Provider Identifier (NPI) is 1558300822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Allan's specialty?
- Michael Allan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Allan located?
- Michael Allan's practice location on file with NPPES is 700 S Park St, Madison, WI 53715-1830.
- What is Michael Allan's phone number?
- The practice phone number listed in the NPPES registry for Michael Allan is (608) 260-2900.
- Does Michael Allan accept Medicare?
- Michael Allan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Allan's NPI active?
- Yes — Michael Allan's NPI (1558300822) is active in the NPPES registry as of the last update on 2020-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.