IRENE MARIE O'BRIEN
NPI 1063176550
Speech-Language Pathologist in Sierra Madre, CA
About Irene Marie O'brien NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IRENE MARIE O'BRIEN (NPI 1063176550) is an individual speech-language pathologist provider in Sierra Madre, California, licensed in California (SP8940) and active in the NPI registry since October 2021.
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)
Irene Marie O'brien is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Irene O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Beverly Hills, CA 90210
- Reassigned Medicare billing, California enrollment
- 147 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.
SIERRA MADRE, CA 91024
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 Irene O'brien's NPI number?
The NPI number for Irene O'brien is 1063176550. It was assigned to this individual provider in the NPPES registry on October 29, 2021.
Where is Irene O'brien located?
Irene O'brien practices at 245 W Sierra Madre Blvd, Sierra Madre, CA 91024. The listed phone number is (626) 314-7862.
What is Irene O'brien's specialty?
The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.
Is Irene O'brien enrolled in Medicare?
Yes. Irene O'brien is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Irene O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Irene O'brien reassigns Medicare benefits to New Life Physical Therapy Services, PC (Beverly Hills, CA). 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 Irene O'brien'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 Irene O'brien was last updated on October 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Irene Marie O'brien · NPI 1063176550
Speech-Language Pathologist provider in Sierra Madre, California. Individual provider, active in the CMS NPPES registry since October 29, 2021.
## Identity
- **NPI:** 1063176550 (Entity type: Individual)
- **Enumerated:** October 29, 2021
- **Primary specialty:** Speech-Language Pathologist · taxonomy 235Z00000X
- **State license:** SP8940 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 245 W SIERRA MADRE BLVD, Sierra Madre, CA 91024-2355
- **Phone:** (626) 314-7862
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** New Life Physical Therapy Services, PC (NPI 1285160788, Beverly Hills, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 29, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1063176550) · Data from the CMS NPPES public registry.