MARY KAREN DICK MD
NPI 1205454915
Dermatology in Oak Brook, IL
About Mary Karen Dick Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KAREN DICK MD (NPI 1205454915) is an individual dermatology provider in Oak Brook, Illinois, licensed in Illinois (036-174463) and active in the NPI registry since July 2020. She is enrolled in Medicare PECOS, is affiliated with Rush University Medical Center, and is a graduate of Creighton University School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary Karen Dick Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Mary Dick reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rush University Medical Group
- 2,169 clinicians in this Medicare group
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 548 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Rush University Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60523 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Dick's NPI number?
The NPI number for Mary Dick is 1205454915. It was assigned to this individual provider in the NPPES registry on July 9, 2020.
Where is Mary Dick located?
Mary Dick practices at 2011 York Rd, Oak Brook, IL 60523. The listed phone number is (312) 947-7546.
What is Mary Dick's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is Mary Dick enrolled in Medicare?
Yes. Mary Dick is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mary Dick's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Dick reassigns Medicare benefits to 2 organizations: Rush University Medical Center (Oak Brook, IL) and Rush Medical Group (Chicago, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Dick's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Dick accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Mary Dick as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mary Dick affiliated with any hospitals?
According to CMS data, Mary Dick is affiliated with Rush University Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Dick was last updated on November 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mary Karen Dick, MD · NPI 1205454915
Dermatology physician in Oak Brook, Illinois. Individual provider, active in the CMS NPPES registry since July 9, 2020.
## Identity
- **NPI:** 1205454915 (Entity type: Individual)
- **Enumerated:** July 9, 2020
- **Primary specialty:** Dermatology · taxonomy 207N00000X
- **State license:** 036-174463 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 2011 YORK RD, Oak Brook, IL 60523-1992
- **Phone:** (312) 947-7546
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Rush University Medical Center (NPI 1801375696, Oak Brook, IL); Rush Medical Group (NPI 1467312850, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Creighton University School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** November 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1205454915) · Data from the CMS NPPES public registry.