Leonard Kessler MD
About this NPIWhat this record shows.
NPI 1942209135 is registered to Leonard Kessler MD, a Hematology & Oncology practising at 242 Merrick Rd, Suite 301 in Rockville Centre, New York. Hematology & Oncology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Leonard Kessler 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
- 00479570NY
Other
- W15181· Issued by GROUP#
Source: NPPES public registry.
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 Leonard Kessler MD accepts. To confirm in-network status with your specific health plan, contact Leonard Kessler MD directly at (516) 536-1455.
Frequently asked
Yes. NPI 1942209135 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Hematology & Oncology 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 (516) 536-1455.
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. Leonard Kessler MD is a Type-1 individual NPI.