Michael Koss, MD
NPI 1053365742 · Gastroenterology Physician · Sun City West, AZ
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Koss, MD is a Gastroenterology Physician provider in Sun City West, AZ (NPI 1053365742).
Provider details
- NPI number
- 1053365742
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 29368 (AZ)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,261 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 203 | $76 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 201 | $130 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 150 | $85 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 134 | $126 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 100 | $242 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High Risk |
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 |
|---|---|---|
| Pantoprazole Sodium | 326 | 136 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 162 | 153 |
| Omeprazole | 70 | 28 |
| Famotidine | 60 | 23 |
| Sucralfate | 29 | 15 |
| Mesalamine | 22 | — |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 22 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2008-01-23
Frequently asked questions
- What is Michael Koss's NPI number?
- Michael Koss's National Provider Identifier (NPI) is 1053365742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Koss's specialty?
- Michael Koss is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Koss located?
- Michael Koss's practice location on file with NPPES is 14416 W Meeker Blvd, Sun City West, AZ 85375-5284.
- What is Michael Koss's phone number?
- The practice phone number listed in the NPPES registry for Michael Koss is (623) 583-5273.
- Does Michael Koss accept Medicare?
- Michael Koss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Koss's NPI active?
- Yes — Michael Koss's NPI (1053365742) is active in the NPPES registry as of the last update on 2008-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.