Marilyn Siegel LCSW
About this NPIWhat this record shows.
NPI 1548399041 is registered to Marilyn Siegel LCSW, a Clinical Social Worker practising at 3525 W Peterson Ave Ste 400 in Chicago, Illinois. Clinical Social Worker is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Marilyn Siegel LCSW has been enumerated in the National Provider Identifier (NPI) registry since 2007.
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. Within the directory it is one of 15,949 Clinical Social Worker 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
- 149-005494IL· Issued by LCSW
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 Marilyn Siegel LCSW accepts. To confirm in-network status with your specific health plan, contact Marilyn Siegel LCSW directly at (773) 866-5035.
Frequently asked
Yes. NPI 1548399041 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Social Worker 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 (773) 866-5035.
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. Marilyn Siegel LCSW is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 15,949 Clinical Social Worker providers are registered in Illinois, and Marilyn Siegel LCSW is one of them. The figure refreshes each month from the federal source.