Jay Isaac Gruenfeld, D.D.S.
Dentist · Hewlett, NY
Jay Isaac Gruenfeld, D.D.S. is a dentist with a practice address in Hewlett, New York, and NPI 1558705665, issued on Apr 18, 2013. Check the license (New York 036766, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jay Isaac Gruenfeld
- Credential
- D.D.S.
- Primary taxonomy
- Dentist 122300000X
- License number
- 036766 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1800 Rockaway Ave, Hewlett, NY 11557
- Phone
- (516) 569-5868
- Enumerated
- Apr 18, 2013
- Record last updated
- Apr 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 5,918 in New York → Look up another NPI →
Also registered at 1800 Rockaway Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jay Isaac Gruenfeld in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 036766Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average dentist in 2024
21 Medicare Part D claims, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Jay Isaac Gruenfeld among 5,918 dentist records in New York
Jay Isaac Gruenfeld, D.D.S. is one of 5,918 dentist records with a practice address in New York. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 70% of them.
- NPI issued2013 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2013 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 dentist records list a practice address in Hewlett
They are 10 of the 394 NPPES records with a practice address in Hewlett, and 5,918 dentist records in New York.
All 5,918 in New York → Every provider in Hewlett → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Andrea Botar, D.D.S.Hewlett, NY 115571295016905
- Nanda Daleo, DDSHewlett, NY 115571891703807
- Ron Kaminer, DDSHewlett, NY 115571366547044
- Seth Kleinrock, DDSHewlett, NY 115571588054936
- Burt Kreisman, DDSHewlett, NY 115571740458884
- Judd Lesser, D.D.SHewlett, NY 115571619022498
- Ronald Margolies, D.M.D.Hewlett, NY 115571194127647
- Chana Perl, D.D.S.Hewlett, NY 115571609811074
Common questions
What is Jay Isaac Gruenfeld, D.D.S.'s NPI number?
Jay Isaac Gruenfeld, D.D.S.'s National Provider Identifier (NPI) is 1558705665, issued on Apr 18, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Jay Isaac Gruenfeld, D.D.S. located?
The NPPES record lists a practice address at 1800 Rockaway Ave, Hewlett, NY, 11557. Phone: (516) 569-5868. Providers update this record themselves, so call before visiting.
How can I verify Jay Isaac Gruenfeld, D.D.S.'s license?
NPPES lists New York license number 036766, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Jay Isaac Gruenfeld, D.D.S. prescribe under Medicare Part D?
In 2024, Jay Isaac Gruenfeld, D.D.S. had 21 Medicare Part D claims; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.
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.