NIEUN SIM
NPI 1841725207
Occupational Therapist in Aurora, CO
About Nieun Sim NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NIEUN SIM (NPI 1841725207) is an individual occupational therapist in Aurora, Colorado, licensed in Colorado (0006113) and active in the NPI registry since April 2017.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Nieun Sim is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Nieun Sim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Aurora, CO 80014
- Reassigned Medicare billing, Colorado enrollment
- 2 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.
Other Providers at the Same Location NPPES 4
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 Nieun Sim's NPI number?
The NPI number for Nieun Sim is 1841725207. It was assigned to this individual provider in the NPPES registry on April 24, 2017.
Where is Nieun Sim located?
Nieun Sim practices at 14001 E Iliff Ave Ste 215, Aurora, CO 80014. The listed phone number is (303) 341-2277.
What is Nieun Sim's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Nieun Sim enrolled in Medicare?
Yes. Nieun Sim is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Nieun Sim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nieun Sim reassigns Medicare benefits to Quality Health Pt & ot (Aurora, CO). The 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 Nieun Sim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Nieun Sim was last updated on August 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.