OLIVIA CASTELLANOS
NPI 1821551599
Nurse Practitioner - Family in Rockford, IL
About Olivia Castellanos NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLIVIA CASTELLANOS (NPI 1821551599) is an individual family provider in Rockford, Illinois, licensed in Illinois (209019112) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
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 and accepts Medicare assignment
Olivia Castellanos 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
3Medicare enrollment records show Olivia Castellanos reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Elmhurst, IL 60126
- Reassigned Medicare billing, Illinois enrollment
- 12 clinicians in this Medicare group
Skokie, IL 60077
- Reassigned Medicare billing, Illinois enrollment
- 27 clinicians in this Medicare group
Evanston, IL 60202
- Reassigned Medicare billing, Illinois enrollment
- 191 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 7
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 61104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROCKFORD, IL 61104
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 Olivia Castellanos's NPI number?
The NPI number for Olivia Castellanos is 1821551599. It was assigned to this individual provider in the NPPES registry on April 10, 2019.
Where is Olivia Castellanos located?
Olivia Castellanos practices at 2222 E State St Ste 209, Rockford, IL 61104. The listed phone number is (815) 988-8500.
What is Olivia Castellanos's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Olivia Castellanos enrolled in Medicare?
Yes. Olivia Castellanos 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 Olivia Castellanos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Castellanos reassigns Medicare benefits to 3 organizations: Advanced Medical Consultations Ltd (Elmhurst, IL), Ameriwound Physicians Il LLC (Skokie, IL) and Cmc Healthcare LLC (Evanston, 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 Olivia Castellanos'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 Olivia Castellanos was last updated on April 10, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.