Yi Jau Ko, MA, OTR/L
Occupational Therapist · Perris, CA
Yi Jau Ko, MA, OTR/L is an occupational therapist with a practice address in Perris, California, and NPI 1538704127, issued on Nov 7, 2019. Check the license (California 20494, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Yi Jau Ko
- Credential
- MA, OTR/L
- Primary taxonomy
- Occupational Therapist 225X00000X
- License number
- 20494 CA
Self-reported in NPPES; status is on the state search - Practice location
- 975 West Morgan St., Perris, CA 92571
- Phone
- (951) 940-6100
- Enumerated
- Nov 7, 2019
- Record last updated
- Jan 30, 2026
- Medicare enrollment
- Enrolled (PECOS I20250129000359); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest occupational therapist records → All 9,244 in California → Look up another NPI →
Verify Yi Jau Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 20494Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- New Life Physical Therapy Services PCRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yi Jau Ko among 9,244 occupational therapist records in California
Yi Jau Ko, MA, OTR/L 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. Its NPI, issued in 2019, is newer than 53% of them.
- NPI issued2019 · 53% of these records are older, 41% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 10% of these records are
- Graduated2019 · median 2018 among the 910 with a school on file
- Record last updated2026 · 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).
Occupational Therapist providers in California
There are 9,244 occupational therapist records in California.
All 9,244 in California → Every provider in Perris → Occupational Therapist nationwide →
The 8 occupational therapist records with the nearest ZIP codes
- Sarah Chao, OTR/LPerris, CA 925711730840620
- Stacey CaddenPerris, CA 925701497200356
- Anahisa Aguirre VerdugoMurrieta, CA 925631083390702
- Jake AlzubaidiMurrieta, CA 925631083538011
- Amanda Balido, OTR/LMurrieta, CA 925631548853294
- Erin Casillas, OTR/LMurrieta, CA 925631043846009
- Saulualofaiga CoffinMurrieta, CA 925631730920349
- Sarah Coker, OTR/LMurrieta, CA 925631306571864
Common questions
What is Yi Jau Ko, MA, OTR/L's NPI number?
Yi Jau Ko, MA, OTR/L's National Provider Identifier (NPI) is 1538704127, issued on Nov 7, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Yi Jau Ko, MA, OTR/L located?
The NPPES record lists a practice address at 975 West Morgan St., Perris, CA, 92571. Phone: (951) 940-6100. Providers update this record themselves, so call before visiting.
How can I verify Yi Jau Ko, MA, OTR/L's license?
NPPES lists California license number 20494, 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. Medicare files from data.cms.gov. 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.