William R. Treem, M.D.
Pediatric Gastroenterology Physician · Brooklyn, NY
William R. Treem, M.D. is a pediatric gastroenterology physician with a practice address in Brooklyn, New York, and NPI 1083692644, issued on Jan 4, 2006. Check the license (New York 230943-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William R. Treem
- Credential
- M.D.
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License number
- 230943-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 450 Clarkson Ave, Brooklyn, NY 11203
- Phone
- (718) 270-4714
- Enumerated
- Jan 4, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (718) 270-1985
- Medicaid ID
- 01825658 NY
- Entity
- Type 1 · individual
8 nearest pediatric gastroenterology physician records → All 182 in New York → Look up another NPI →
Also registered at 450 Clarkson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ahmed AbdelfattahStudent in an Organized Health Care Education/Training Program1508708959
- Haram AbdelmajidStudent in an Organized Health Care Education/Training Program1093348054
- Sara AbdelrahamanStudent in an Organized Health Care Education/Training Program1659143568
Verify William R. Treem 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 230943-1Check 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: $63,475.00
4 payments; by number, the most common kind was consulting fee; the largest payer was Albireo Pharma, 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.
William R. Treem among 182 pediatric gastroenterology physician records in New York
William R. Treem, M.D. is one of 182 pediatric gastroenterology physician records with a practice address in New York. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 62% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 24% of these records are
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Gastroenterology Physician providers in New York
There are 182 pediatric gastroenterology physician records in New York.
All 182 in New York → Every provider in Brooklyn → Pediatric Gastroenterology Physician nationwide →
The 8 pediatric gastroenterology physician records with the nearest ZIP codes
- Stanley Fisher, M.D.Brooklyn, NY 112031851376321
- Anne Levine, MDBrooklyn, NY 112031295265767
- Radha Nathan, M.D.Brooklyn, NY 112031881672426
- Shagun SharmaBrooklyn, NY 112031366003485
- Emilia Shin, M.D.Brooklyn, NY 112031588915201
- Jiliu Xu, M.DBrooklyn, NY 112031174769319
- Daniel Zhaostein, MDBrooklyn, NY 112031588125702
- Abraham Jelin, MDBrooklyn, NY 112011043204068
Common questions
What is William R. Treem, M.D.'s NPI number?
William R. Treem, M.D.'s National Provider Identifier (NPI) is 1083692644, issued on Jan 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William R. Treem, M.D. located?
The NPPES record lists a practice address at 450 Clarkson Ave, Brooklyn, NY, 11203. Phone: (718) 270-4714. Providers update this record themselves, so call before visiting.
How can I verify William R. Treem, M.D.'s license?
NPPES lists New York license number 230943-1, 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.