Dr. Jack Greenwood MD
About this NPIWhat this record shows.
NPI 1851396865 is registered to Dr. Jack Greenwood MD, a Child Neurology practising at 120 N Country Rd in Port Jefferson, New York. Child Neurology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Jack Greenwood MD has been enumerated in the National Provider Identifier (NPI) registry since 2005.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
- 00664526NY
Source: NPPES public registry.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20040107000130NeurologyNY
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Jack Greenwood MD accepts. To confirm in-network status with your specific health plan, contact Dr. Jack Greenwood MD directly at (631) 474-0444.
Frequently asked
Yes. NPI 1851396865 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Child Neurology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (631) 474-0444.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Jack Greenwood MD is a Type-1 individual NPI.