DIANA M OLSEN APN
NPI 1952897001
Nurse Practitioner - Family in Morris, IL
About Diana M Olsen Apn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA M OLSEN APN (NPI 1952897001) is an individual family provider in Morris, Illinois, licensed in Illinois (209.017817) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS, is affiliated with Morris Hospital & Healthcare Centers, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
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
Diana M Olsen Apn 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 Diana Olsen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Channahon, IL 60410
- Reassigned Medicare billing, Illinois enrollment
- 207 clinicians in this Medicare group
Peoria, IL 61615
- Reassigned Medicare billing, Illinois enrollment
- 2,944 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.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Morris Hospital & Healthcare Centers
Acute Care Hospitals · Morris, ILOsf Little Company Of Mary Medical Center
Acute Care Hospitals · Evergreen Park, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60450 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 11
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 Diana Olsen's NPI number?
The NPI number for Diana Olsen is 1952897001. It was assigned to this individual provider in the NPPES registry on July 2, 2018. The provider is also known as Diana M Clark Apn.
Where is Diana Olsen located?
Diana Olsen practices at 1300 Dresden Dr, Morris, IL 60450. The listed phone number is (815) 942-5200.
What is Diana Olsen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Diana Olsen enrolled in Medicare?
Yes. Diana Olsen 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 Diana Olsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Olsen reassigns Medicare benefits to 2 organizations: Morris Hospital (Channahon, IL) and Osf Multi-Specialty Group (Peoria, 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 Diana Olsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diana Olsen accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Diana Olsen 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 Diana Olsen affiliated with any hospitals?
According to CMS data, Diana Olsen is affiliated with Morris Hospital & Healthcare Centers and Osf Little Company Of Mary Medical Center.
When was this NPI record last updated?
The NPPES record for Diana Olsen was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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.
# Diana M Olsen, APN · NPI 1952897001
Family physician in Morris, Illinois. Individual provider, active in the CMS NPPES registry since July 2, 2018.
## Identity
- **NPI:** 1952897001 (Entity type: Individual)
- **Enumerated:** July 2, 2018
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 209.017817 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1300 DRESDEN DR, Morris, IL 60450-2476
- **Phone:** (815) 942-5200
## 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): Morris Hospital (NPI 1275648511, Channahon, IL); Osf Multi-Specialty Group (NPI 1154908929, Peoria, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** September 29, 2026
- **Other identifiers:** Other 209.017817 (IL)
---
Source: [NPI Profile](https://npiprofile.com/npi/1952897001) · Data from the CMS NPPES public registry.