GRETCHEN BAKER
NPI 1861163446
Occupational Therapist in Westlake Village, CA

Active since September 23, 2021
31248 OAK CREST DR STE 120, WESTLAKE VILLAGE, CA 91361(818) 926-9057 Get Directions Write a Review

NPPES record last updated: September 23, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gretchen Baker NPPES

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

GRETCHEN BAKER (NPI 1861163446) is an individual occupational therapist in Westlake Village, California, licensed in California (19577) and active in the NPI registry since September 2021. She is a graduate of Other (2018).

NPPES Registry Identity

NPI1861163446
Entity TypeIndividualFemale
Primary Taxonomy225X00000X
Provider Legal NameGRETCHEN BAKER
Location Address31248 OAK CREST DR STE 120Westlake Village, CA 91361-5673
Mailing Address31248 Oak Crest Dr Ste 120Westlake Village, CA 91361-5673
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateSeptember 23, 2021
NPPES CertifiedSeptember 23, 2021
✔ NPI 1861163446 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
License✔ Licensed in CA · 19577
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.
31248 OAK CREST DR STE 120, Westlake Village, CA 91361

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gretchen Baker is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1850789991
PECOS Enrollment IDI20211022001119

Medicare Billing Reassignments

2

Medicare enrollment records show Gretchen Baker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Physical Therapist
100 E THOUSAND OAKS BLVD STE 237
Thousand Oaks, CA 91360
  • Reassigned Medicare billing, California enrollment
  • 92 clinicians in this Medicare group
Physical Rehabilitation
11344 BERWICK ST
Los Angeles, CA 90049
  • Reassigned Medicare billing, California enrollment

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 20

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

Physical Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Occupational Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Physical Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Physical Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Physical Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Occupational Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Physical Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361
Physical Therapist
31248 OAK CREST DR STE 120
WESTLAKE VILLAGE, CA 91361

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 Gretchen Baker's NPI number?

The NPI number for Gretchen Baker is 1861163446. It was assigned to this individual provider in the NPPES registry on September 23, 2021.

Where is Gretchen Baker located?

Gretchen Baker practices at 31248 Oak Crest Dr Ste 120, Westlake Village, CA 91361. The listed phone number is (818) 926-9057.

What is Gretchen Baker's specialty?

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

Is Gretchen Baker enrolled in Medicare?

Yes. Gretchen Baker is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gretchen Baker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Baker reassigns Medicare benefits to 2 organizations: Feld Care Therapy Inc (Thousand Oaks, CA) and Westside Occupational Therapy Inc (Los Angeles, 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 Gretchen Baker'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 Gretchen Baker was last updated on September 23, 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.