Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Gregory Powell, MD

Individual provider Gastroenterology Physician · NPI 1588868541

Gregory Powell, MD practises Gastroenterology in Willoughby, Ohio. Graduated from Albany Medical College of Union University in 2000, 26 years ago. Practices with Cleveland Clinic, a 6,935-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
26
Trained at
Albany Medical College of Union University
Licensed in
OH
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

36100 Euclid Ave Ste 440
Willoughby, OH 44094-4456 Not confirmed with CMS for 12 years — call before visiting
Phone: (440) 942-7909
Fax: (440) 942-7846
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 35082852 (OH)

Record details

NPI number1588868541
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2007
Last updated in NPPESJune 27, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 2000 (26 years in practice)
Group practice Cleveland Clinic — 6935 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations11 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 194 times · 93rd percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 183 times · 89th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients522
Services billed 710 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Cleveland Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6935 clinicians in the practice; 12 are shown here.

Other providers in Willoughby