Ms. Sydney Mesker
About this NPIWhat this record shows.
NPI 1871454090 is registered to Ms. Sydney Mesker, a Professional Counselor practising at 1010 Lake St Ste 500 in Oak Park, Illinois. Professional Counselor is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Ms. Sydney Mesker has been enumerated in the National Provider Identifier (NPI) registry since 2025.
Your brand here.
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 Ms. Sydney Mesker accepts. To confirm in-network status with your specific health plan, contact Ms. Sydney Mesker directly at (773) 665-8052.
Frequently asked
Yes. NPI 1871454090 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Professional Counselor 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) 665-8052.
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. Ms. Sydney Mesker is a Type-1 individual NPI.