Mary Oler
About this NPIWhat this record shows.
NPI 1861882425 is registered to Mary Oler, a Professional Counselor practising at 1020 Milwaukee Ave, Suite 255 in Deerfield, Illinois. Professional Counselor is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Mary Oler has been enumerated in the National Provider Identifier (NPI) registry since 2015.
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
- I20250801002877Mental Health CounselorIL
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 Mary Oler accepts. To confirm in-network status with your specific health plan, contact Mary Oler directly at (847) 951-2570.
Frequently asked
Yes. NPI 1861882425 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 (847) 951-2570.
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. Mary Oler is a Type-1 individual NPI.