Dr. Jeffrey Ishizuka M.D.
About this NPIWhat this record shows.
NPI 1134552185 is registered to Dr. Jeffrey Ishizuka M.D., a Medical Oncology Physician practising at 20 York St in New Haven, Connecticut. Medical Oncology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Jeffrey Ishizuka M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2013.
Your brand here.
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
- I20200421002514Internal MedicineCT
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. Jeffrey Ishizuka M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Jeffrey Ishizuka M.D. directly at (203) 688-4242.
Frequently asked
Yes. NPI 1134552185 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Medical Oncology Physician 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 (203) 688-4242.
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. Jeffrey Ishizuka M.D. is a Type-1 individual NPI.