Michael Greenwell, MD
NPI 1104821735 · Gastroenterology Physician · Louisville, KY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Greenwell, MD is a Gastroenterology Physician provider in Louisville, KY (NPI 1104821735).
Provider details
- NPI number
- 1104821735
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 207RG0100X (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
699 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 154 | $123 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 112 | $93 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 72 | $174 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 59 | $130 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 59 | $48 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 318 | 97 |
| Omeprazole | 86 | 33 |
| Famotidine | 59 | 16 |
| Sucralfate | 49 | 14 |
| Mesalamine | 40 | 11 |
| Metoclopramide Hcl | 39 | — |
| Sulfasalazine | 27 | — |
| Dicyclomine Hcl | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,577 across 94 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-20
- Last updated
- 2014-08-26
Frequently asked questions
- What is Michael Greenwell's NPI number?
- Michael Greenwell's National Provider Identifier (NPI) is 1104821735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Greenwell's specialty?
- Michael Greenwell is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Greenwell located?
- Michael Greenwell's practice location on file with NPPES is 3950 Kresge Way, Louisville, KY 40207-4637.
- What is Michael Greenwell's phone number?
- The practice phone number listed in the NPPES registry for Michael Greenwell is (502) 893-0220.
- Does Michael Greenwell accept Medicare?
- Michael Greenwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Greenwell's NPI active?
- Yes — Michael Greenwell's NPI (1104821735) is active in the NPPES registry as of the last update on 2014-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.