Gregory Powell, MD
NPI 1588868541 · Gastroenterology Physician · Willoughby, OH
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Powell, MD is a Gastroenterology Physician provider in Willoughby, OH (NPI 1588868541).
Provider details
- NPI number
- 1588868541
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35082852 (OH)
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
19 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
616 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 | 83 | $238 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 80 | $171 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 69 | $112 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 54 | $76 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 41 | $100 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 354 | 115 |
| Omeprazole | 86 | 29 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 62 | 62 |
| Famotidine | 54 | 18 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 39 | 39 |
| Balsalazide Disodium | 31 | — |
| Mesalamine | 30 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-13
- Last updated
- 2014-06-27
Frequently asked questions
- What is Gregory Powell's NPI number?
- Gregory Powell's National Provider Identifier (NPI) is 1588868541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Powell's specialty?
- Gregory Powell is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Powell located?
- Gregory Powell's practice location on file with NPPES is 36100 Euclid Ave, Willoughby, OH 44094-4456.
- What is Gregory Powell's phone number?
- The practice phone number listed in the NPPES registry for Gregory Powell is (440) 942-7909.
- Does Gregory Powell accept Medicare?
- Gregory Powell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Powell's NPI active?
- Yes — Gregory Powell's NPI (1588868541) is active in the NPPES registry as of the last update on 2014-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.