Mary Anne Walker, COTA
Occupational Therapist · Fullerton, CA
Mary Anne Walker, COTA is an occupational therapist with a practice address in Fullerton, California, and NPI 1801285309, issued on Jan 21, 2015. Check the license (California 2208, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Anne Walker
- Credential
- COTA
- Primary taxonomy
- Occupational Therapist 225X00000X
- License number
- 2208 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1821 E Chapman Ave, Fullerton, CA 92831
- Phone
- (714) 879-7301
- Enumerated
- Jan 21, 2015
- Record last updated
- Jan 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest occupational therapist records → All 9,244 in California → Look up another NPI →
Also registered at 1821 E Chapman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronaldo Cabrera, PTPhysical Therapist1003108036
- So Young Choi, OTR/LOccupational Therapist1063886794
- Pooja ShahOccupational Therapist1699074377
- Jeffrey VillafloresPhysical Therapy Assistant1194113886
- Patricia Virata, COTA/LOccupational Therapy Assistant1922464098
Verify Mary Anne Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 2208Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mary Anne Walker among 9,244 occupational therapist records in California
Mary Anne Walker, COTA is one of 9,244 occupational therapist records with a practice address in California. 9% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 33% of them.
- NPI issued2015 · 33% of these records are older, 62% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 10% of these records are
- Record last updated2015 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 occupational therapist records list a practice address in Fullerton
They are 53 of the 5,437 NPPES records with a practice address in Fullerton, and 9,244 occupational therapist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9,244 in California → Every provider in Fullerton → Occupational Therapist nationwide →
The 8 occupational therapist records with the nearest ZIP codes
- John Arthur Alba, RPTFullerton, CA 928311184894446
- Dennis Ray Baloy, OTR-LFullerton, CA 928311437357308
- Diana BystryFullerton, CA 928311770222424
- Andrea Chan, OTRFullerton, CA 928311033140231
- So Young Choi, OTR/LFullerton, CA 928311063886794
- Sydney Hoang, OTFullerton, CA 928311659006302
- Cherlene Hung, MS, OTR/LFullerton, CA 928311831799485
- Pooja ShahFullerton, CA 928311699074377
Common questions
What is Mary Anne Walker, COTA's NPI number?
Mary Anne Walker, COTA's National Provider Identifier (NPI) is 1801285309, issued on Jan 21, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary Anne Walker, COTA located?
The NPPES record lists a practice address at 1821 E Chapman Ave, Fullerton, CA, 92831. Phone: (714) 879-7301. Providers update this record themselves, so call before visiting.
How can I verify Mary Anne Walker, COTA's license?
NPPES lists California license number 2208, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.