Gregg Michael Knel
Specialist · Port Jefferson, NY
Gregg Michael Knel is a specialist with a practice address in Port Jefferson, New York, and NPI 1023469814, issued on Jun 23, 2016. Check the license with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregg Michael Knel
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 106 Nadia CT, Port Jefferson, NY 11777
- Phone
- (917) 747-1435
- Enumerated
- Jun 23, 2016
- Record last updated
- Jun 23, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest specialist records → All 22,636 in New York → Look up another NPI →
Verify Gregg Michael Knel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregg Michael Knel among 22,636 specialist records in New York
Gregg Michael Knel is one of 22,636 specialist records with a practice address in New York. 6% 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 2016, is newer than 56% of them.
- NPI issued2016 · 56% of these records are older, 39% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2016 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 specialist records list a practice address in Port Jefferson
They are 20 of the 983 NPPES records with a practice address in Port Jefferson, and 22,636 specialist records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 22,636 in New York → Every provider in Port Jefferson → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Ajay Berdia, M.D.Port Jefferson, NY 117771801891908
- Pamela CadenPort Jefferson, NY 117771063707339
- Philip Celestino, C.PED.Port Jefferson, NY 117771659493575
- Jennifer Crimmins, MSEDPort Jefferson, NY 117771235491689
- Yvon Damour, M.D.Port Jefferson, NY 117771124114491
- Lisa Flanagan, M.S. SPECIAL ED.Port Jefferson, NY 117771184988974
- Morton Glaser, MDPort Jefferson, NY 117771487657755
- Joyce LongoPort Jefferson, NY 117771164770525
Common questions
What is Gregg Michael Knel's NPI number?
Gregg Michael Knel's National Provider Identifier (NPI) is 1023469814, issued on Jun 23, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Gregg Michael Knel located?
The NPPES record lists a practice address at 106 Nadia CT, Port Jefferson, NY, 11777. Phone: (917) 747-1435. Providers update this record themselves, so call before visiting.
How can I verify Gregg Michael Knel's license?
Search the New York board that licenses this profession; the NPPES record confirms identity 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. 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.