Marilen Mamuyac Grimm, OTR
Occupational Therapist · Glendale, CA
Marilen Mamuyac Grimm, OTR is an occupational therapist with a practice address in Glendale, California, and NPI 1881768224, issued on Nov 18, 2006. Check the license (California OT 8425, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marilen Mamuyac Grimm
- Credential
- OTR
- Primary taxonomy
- Occupational Therapist 225X00000X
- License numbers
- OT 8425 CA
OT8425 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 W. Glenoaks Blvd., Glendale, CA 91202
- Phone
- (818) 637-2127
- Enumerated
- Nov 18, 2006
- Record last updated
- Aug 18, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (818) 637-2126
- Medicare enrollment
- Enrolled (PECOS I20051122000773); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest occupational therapist records → All 9,244 in California → Look up another NPI →
Also registered at 500 W. Glenoaks Blvd.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jean Philippe Beauvois, PTPhysical Therapist1528242740
- Stephanie Loo, D.P.T.Orthopedic Physical Therapist1245304781
Verify Marilen Mamuyac Grimm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OT 8425Check 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
- Wellworks Physical Therapy And Rehabilitation IncGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marilen Mamuyac Grimm among 9,244 occupational therapist records in California
Marilen Mamuyac Grimm, OTR 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 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 95% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 10% of these records are
- Graduated2000 · median 2018 among the 910 with a school on file
- Record last updated2010 · 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).
47 occupational therapist records list a practice address in Glendale
They are 47 of the 4,742 NPPES records with a practice address in Glendale, and 9,244 occupational therapist records in California.
All 9,244 in California → Every provider in Glendale → Occupational Therapist nationwide →
The 8 occupational therapist records with the nearest ZIP codes
- Ruby Cho, OTR/LGlendale, CA 912021962705913
- Loan Hoang, OTGlendale, CA 912021578907515
- Natalie KeleshyanGlendale, CA 912021073208922
- Kathleen LiuGlendale, CA 912021093660466
- Barbara Talley, OTR/LGlendale, CA 912021346427606
- Jeffrey TruongGlendale, CA 912021710663125
- Caroline Venetis, OTR/LGlendale, CA 912021023852308
- Edit Keshishyan, OTGlendale, CA 912011043563984
Common questions
What is Marilen Mamuyac Grimm, OTR's NPI number?
Marilen Mamuyac Grimm, OTR's National Provider Identifier (NPI) is 1881768224, issued on Nov 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marilen Mamuyac Grimm, OTR located?
The NPPES record lists a practice address at 500 W. Glenoaks Blvd., Glendale, CA, 91202. Phone: (818) 637-2127. Providers update this record themselves, so call before visiting.
How can I verify Marilen Mamuyac Grimm, OTR's license?
NPPES lists California license number OT 8425, 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.