ILSE AERTS
NPI 1174975155
Marriage & Family Therapist in Ontario, CA
About Ilse Aerts NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ILSE AERTS (NPI 1174975155) is an individual marriage & family therapist in Ontario, California, licensed in California (96211) and active in the NPI registry since July 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses 2
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
Ilse Aerts 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 Ilse Aerts reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ontario, CA 91764
- Reassigned Medicare billing, California enrollment
- 27 clinicians in this Medicare group
Riverside, CA 92506
- Reassigned Medicare billing, California enrollment
- 13 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ONTARIO, CA 91764
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 Ilse Aerts's NPI number?
The NPI number for Ilse Aerts is 1174975155. It was assigned to this individual provider in the NPPES registry on July 1, 2016.
Where is Ilse Aerts located?
Ilse Aerts practices at 3633 Inland Empire Blvd Ste 777, Ontario, CA 91764. The listed phone number is (909) 295-5805.
What is Ilse Aerts's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Ilse Aerts enrolled in Medicare?
Yes. Ilse Aerts 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 Ilse Aerts's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ilse Aerts reassigns Medicare benefits to 2 organizations: Thrive Psychological Services Inc (Ontario, CA) and Central Counseling Services Licensed Clinical Social Worker Inc (Riverside, CA). 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 Ilse Aerts'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 Ilse Aerts was last updated on February 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Ilse Aerts · NPI 1174975155
Marriage & Family Therapist provider in Ontario, California. Individual provider, active in the CMS NPPES registry since July 1, 2016.
## Identity
- **NPI:** 1174975155 (Entity type: Individual)
- **Enumerated:** July 1, 2016
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **State license:** 96211 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3633 INLAND EMPIRE BLVD STE 777, Ontario, CA 91764-7974
- **Phone:** (909) 295-5805
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Thrive Psychological Services Inc (NPI 1528640026, Ontario, CA); Central Counseling Services Licensed Clinical Social Worker Inc (NPI 1043704331, Riverside, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** February 26, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1174975155) · Data from the CMS NPPES public registry.