Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Lewis Genuth, MD

Individual provider Gastroenterology Physician · NPI 1588605588

Lewis Genuth, MD practises Gastroenterology in Brooklyn, New York. Graduated from Albert Einstein College of Medicine of Yeshiva University in 1984, 42 years ago. Practices with Advantagecare Physicians PC, a 310-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
42
Trained at
Albert Einstein College of Medicine of Yeshiva University
Licensed in
NY
In the registry since
2006
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

447 Atlantic Ave
Brooklyn, NY 11217
Phone: (718) 858-6300
Fax: (718) 858-0145
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 101 Pennsylvania Avenue, Brooklyn, NY 11207-2428 — (718) 240-2000
  • 260 W. Sunrise Hwy, Valley Stream, NY 11581-1015 — (516) 825-3600

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 1652232 (NY)

Record details

NPI number1588605588
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 9, 2006
Last updated in NPPESOctober 20, 2025
Certification dateOctober 20, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY
Graduated 1984 (42 years in practice)
Group practice Advantagecare Physicians Pc — 310 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 32 times · 55th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 13 times · 45th 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 patients56
Services billed 102 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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.

Colleagues at Advantagecare Physicians PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 310 clinicians in the practice; 12 are shown here.

Other providers in Brooklyn