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

Leonard A Haas, MD

Individual provider Pediatric Gastroenterology Physician · NPI 1073019584

Leonard A Haas, MD is a Pediatric Gastroenterology Physician in New Hyde Park, New York. Works from 2 locations. Licensed in New York.

Licensed in
NY
In the registry since
2018
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2800 Marcus Ave Ste 201
New Hyde Park, NY 11042-1113
Phone: (516) 622-6076
Fax: (470) 275-0726
Show map & directions

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

Additional practice locations (1)

  • 165 N Village Ave Ste 215, Rockville Centre, NY 11570-3701 — (516) 622-6076

Specialties & licences

Pediatric Gastroenterology Physician (primary) Taxonomy 2080P0206X · Licence 330110 (NY)

Record details

NPI number1073019584
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 3, 2018
Last updated in NPPESMarch 1, 2026
Certification dateMarch 1, 2026

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