Leonard A. Haas, MD
Pediatric Gastroenterology Physician · New Hyde Park, NY
Leonard A. Haas, MD is a pediatric gastroenterology physician with a practice address in New Hyde Park, New York, and NPI 1073019584, issued on Apr 3, 2018. Check the license (New York 330110, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Leonard A. Haas
- Credential
- MD
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License number
- 330110 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2800 Marcus Ave Ste 201, New Hyde Park, NY 11042
- Phone
- (516) 622-6076
- Enumerated
- Apr 3, 2018
- Record last updated
- Mar 1, 2026
- Fax
- (470) 275-0726
- Entity
- Type 1 · individual
Also registered at 2800 Marcus Ave Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Francine Samuels, M.D.Pediatric Gastroenterology Physician1629144084
Verify Leonard A. Haas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 330110Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $460.17
16 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 1,184 providers of this specialty with any payment received $2,585.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Pediatric Gastroenterology Physician providers in New York
There are 182 pediatric gastroenterology physician records in New York.
Other pediatric gastroenterology physician records in New York
- Cynthia Akagbosu, MD, MANew York, NY1831620384
- Nikki Allmendinger, MDAlbany, NY1841499092
- Osama Almadhoun, M.DBuffalo, NY1073728002
- Steven AltschulerNew York, NY1760329163
- Ronen Arnon, M.D.New York, NY1497817480
- Virginia Baez Socorro, M.D.New York, NY1033327556
- Dominique Bailey, M.D.New York, NY1366700874
- Robert Baker, MDBuffalo, NY1952484370
- Susan Baker, MDBuffalo, NY1033292453
- Natasha Bamji, M.D.Valhalla, NY1922267103
Common questions
What is Leonard A. Haas, MD's NPI number?
Leonard A. Haas, MD's National Provider Identifier (NPI) is 1073019584, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Leonard A. Haas, MD located?
The NPPES record lists a practice address at 2800 Marcus Ave Ste 201, New Hyde Park, NY, 11042. Phone: (516) 622-6076. Providers update this record themselves, so call before visiting.
How can I verify Leonard A. Haas, MD's license?
NPPES lists New York license number 330110, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.