Elizabeth Retzer M.D.
About this NPIWhat this record shows.
NPI 1639331655 is registered to Elizabeth Retzer M.D., a Interventional Cardiology practising at 4309 W Medical Center Dr Ste A200 in Mchenry, Illinois. Interventional Cardiology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Elizabeth Retzer M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2008.
Beyond the registryWhat this record adds.
This record carries 1 secondary identifier beyond the base NPI: Medicaid and other payer cross-references used by billers and credentialers, which the standard CMS NPPES lookup does not surface. It is enrolled in Medicare, linking to 1 PECOS enrollment record (with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 347 Interventional Cardiology providers on file in Illinois.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
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.
Other
- 036127442IL· Issued by STATE LICENSE
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
- I20150818004427Cardiovascular Disease (Cardiology)IL
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 Elizabeth Retzer M.D. accepts. To confirm in-network status with your specific health plan, contact Elizabeth Retzer M.D. directly at (815) 759-8070.
Frequently asked
Yes. NPI 1639331655 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Interventional Cardiology 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 (815) 759-8070.
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. Elizabeth Retzer M.D. is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 347 Interventional Cardiology providers are registered in Illinois, and Elizabeth Retzer M.D. is one of them. The figure refreshes each month from the federal source.