Mary Oler
Mary Oler is a Professional Counselor provider (Counselor) practicing in Deerfield, IL, registered in the NPPES registry with NPI 1861882425 since 2015.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1861882425 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mary Oler |
| Sex | Female |
| Practice address | Deerfield, IL, 60015 |
| Phone | 8479512570 |
| Enumeration date | 2015-02-03 |
| Last updated in NPPES | 2015-02-03 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YP2500X | Professional Counselor | Primary | 178.010376 | IL |
Copy-ready billing details
Provider: Mary Oler NPI: 1861882425 Taxonomy: 101YP2500X (Professional Counselor) Address: Deerfield, IL, 60015
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1972610285 | Israel Oler | Individual | Clinical Psychologist | Deerfield, IL |
| 1336259282 | Aleksandr Naroditsky | Individual | Chiropractor | Deerfield, IL |
| 1265658645 | Sheryl Gray | Individual | Nutrition Education Nutritionist | Deerfield, IL |
| 1760655955 | Dennis Lubchenko | Individual | Mental Health Counselor | Deerfield, IL |
| 1043486269 | Mark Drugs Northshore Inc | Organization | Community/Retail Pharmacy | Deerfield, IL |
| 1407018690 | He Joo Yu | Individual | Acupuncturist | Deerfield, IL |
| 1992005326 | Alisa Bloom | Individual | Registered Dietitian | Deerfield, IL |
| 1184911414 | Yu'S Acupuncture &Wellness Ltd | Organization | Acupuncturist | Deerfield, IL |
Verify this record
Cross-check NPI 1861882425 against the authoritative CMS record: view Mary Oler on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-02-03.