Stuart Jay Leff, D.O.
Internal Medicine Physician · Roselle Park, NJ
Stuart Jay Leff, D.O. is an internal medicine physician with a practice address in Roselle Park, New Jersey, and NPI 1124000476, issued on Nov 14, 2005. Check the license (New Jersey MB39974, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Stuart Jay Leff
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MB39974 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 318 Chestnut St, Roselle Park, NJ 07204
- Phone
- (908) 241-4200
- Enumerated
- Nov 14, 2005
- Record last updated
- Apr 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (908) 241-8112
- Medicaid ID
- 0766003 NJ
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 318 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Toru Endo, M.D.Internal Medicine Physician1265618086
- Leonardo Saraceno, M.D.Internal Medicine Physician1306289152
- Noah Stark, DPMPodiatrist1508302076
Verify Stuart Jay Leff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MB39974Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Stuart Jay Leff among 4,632 internal medicine physician records in New Jersey
Stuart Jay Leff, D.O. is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileNo · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2015 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Roselle Park
They are 9 of the 111 NPPES records with a practice address in Roselle Park, and 4,632 internal medicine physician records in New Jersey. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,632 in New Jersey → Every provider in Roselle Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Adina Alexescu, M.D.Roselle Park, NJ 072041174511059
- Lorna Bayes, M.D.Roselle Park, NJ 072041518068782
- Josephine Caggia, DORoselle Park, NJ 072041023177409
- Toru Endo, M.D.Roselle Park, NJ 072041265618086
- Sabeen Khan, M.D.Roselle Park, NJ 072041588979181
- Nicholas Maglaras, MDRoselle Park, NJ 072041336245109
- Leonardo Saraceno, M.D.Roselle Park, NJ 072041306289152
- Robert Solomon, MDRoselle Park, NJ 072041376602805
Common questions
What is Stuart Jay Leff, D.O.'s NPI number?
Stuart Jay Leff, D.O.'s National Provider Identifier (NPI) is 1124000476, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stuart Jay Leff, D.O. located?
The NPPES record lists a practice address at 318 Chestnut St, Roselle Park, NJ, 07204. Phone: (908) 241-4200. Providers update this record themselves, so call before visiting.
How can I verify Stuart Jay Leff, D.O.'s license?
NPPES lists New Jersey license number MB39974, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. 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. 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.