EVA TERESA NADEAU
NPI 1417674979
Occupational Therapist in Rancho Santa Margarita, CA

Active since October 25, 2022Accepts Medicare Assignment
29811 SANTA MARGARITA PKWY STE 600, RANCHO SANTA MARGARITA, CA 92688(949) 600-5439 Get Directions Write a Review

NPPES record last updated: December 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 2, 2025, Oct 25, 2022 (2 updates tracked since 2022).

About Eva Teresa Nadeau NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

EVA TERESA NADEAU (NPI 1417674979) is an individual occupational therapist in Rancho Santa Margarita, California and active in the NPI registry since October 2022. She is a graduate of Other (2025).

NPPES Registry Identity

NPI1417674979
Entity TypeIndividualFemale
Primary Taxonomy225X00000X
Provider Legal NameEVA TERESA NADEAU
Location Address29811 SANTA MARGARITA PKWY STE 600Rancho Santa Margarita, CA 92688-3617
Mailing Address22431 Antonio Pkwy Ste B160-493Rancho Santa Margarita, CA 92688-2804 · (949) 600-5439
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateOctober 25, 2022
Last NPPES UpdateDecember 2, 20252 updates tracked since enumeration
NPPES CertifiedDecember 2, 2025
✔ NPI 1417674979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOccupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225X00000X
Definition
An occupational therapist is a person who has graduated from an entry-level occupational therapy program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, or approved by the World Federation of Occupational Therapists (WFOT), or an equivalent international occupational therapy education program; has successfully completed a period of supervised fieldwork experience required by the occupational therapy program; has passed a nationally recognized entry-level examination for occupational therapists, and fulfills state requirements for licensure, certification, or registration. An occupational therapist provides interventions based on evaluation and which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapists address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life.
29811 SANTA MARGARITA PKWY STE 600, Rancho Santa Margarita, CA 92688

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

Eva Teresa Nadeau 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.

PECOS PAC ID7113495268
PECOS Enrollment IDI20260506003159

Medicare Billing Reassignment

Medicare enrollment records show Eva Nadeau reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Rehabilitation
4001 BELL AVE
Billings, MT 59106
  • Reassigned Medicare billing, California enrollment
  • 332 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 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Occupational Therapist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Speech-Language Pathologist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Speech-Language Pathologist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Speech-Language Pathologist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Speech-Language Pathologist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Physical Therapist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Speech-Language Pathologist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688
Physical Therapist
29811 SANTA MARGARITA PKWY STE 600
RANCHO SANTA MARGARITA, CA 92688

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 Eva Nadeau's NPI number?

The NPI number for Eva Nadeau is 1417674979. It was assigned to this individual provider in the NPPES registry on October 25, 2022.

Where is Eva Nadeau located?

Eva Nadeau practices at 29811 Santa Margarita Pkwy Ste 600, Rancho Santa Margarita, CA 92688. The listed phone number is (949) 600-5439.

What is Eva Nadeau's specialty?

The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.

Is Eva Nadeau enrolled in Medicare?

Yes. Eva Nadeau 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 organization bills Medicare for Eva Nadeau's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Eva Nadeau reassigns Medicare benefits to Orthopaedic And Neurological Rehab Inc (Billings, MT). 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 Eva Nadeau'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 Eva Nadeau was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.