Chistopher Mattsen, OTA
Occupational Therapy Assistant · Ellensburg, WA
Chistopher Mattsen, OTA is an occupational therapy assistant with a practice address in Ellensburg, Washington, and NPI 1700391653, issued on Dec 13, 2017. Check the license (Washington OC60815539, as entered in NPPES) with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Chistopher Mattsen
- Credential
- OTA
- Primary taxonomy
- Occupational Therapy Assistant 224Z00000X
- License number
- OC60815539 WA
Self-reported in NPPES; status is on the state search - Practice location
- 302 E 2ND Ave, Ellensburg, WA 98926
- Phone
- (509) 933-8677
- Enumerated
- Dec 13, 2017
- Record last updated
- Dec 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest occupational therapy assistant records → All 806 in Washington → Look up another NPI →
Verify Chistopher Mattsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license OC60815539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Chistopher Mattsen among 806 occupational therapy assistant records in Washington
Chistopher Mattsen, OTA is one of 806 occupational therapy assistant records with a practice address in Washington. 0% 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 2017, is newer than 52% of them.
- NPI issued2017 · 52% of these records are older, 41% newer
- In a Medicare fileNo · 0% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2017 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 224Z00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Occupational Therapy Assistant providers in Washington
There are 806 occupational therapy assistant records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 806 in Washington → Every provider in Ellensburg → Occupational Therapy Assistant nationwide →
The 8 occupational therapy assistant records with the nearest ZIP codes
- Joyce Ackermran, COTA/LEllensburg, WA 989261972759710
- Peggy Erickson, LMTEllensburg, WA 989261821206186
- Robert PalmerEllensburg, WA 989261447443775
- Amanda FordSelah, WA 989421407533755
- Savannah AldermanYakima, WA 989081245994623
- Alexandria EngeleSunnyside, WA 989441033591730
- Connie Hillerman, COTA/LYakima, WA 989081194162198
- Becky Isley, COTA/LSunnyside, WA 989441467667352
Common questions
What is Chistopher Mattsen, OTA's NPI number?
Chistopher Mattsen, OTA's National Provider Identifier (NPI) is 1700391653, issued on Dec 13, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Chistopher Mattsen, OTA located?
The NPPES record lists a practice address at 302 E 2ND Ave, Ellensburg, WA, 98926. Phone: (509) 933-8677. Providers update this record themselves, so call before visiting.
How can I verify Chistopher Mattsen, OTA's license?
NPPES lists Washington license number OC60815539, as entered by the provider. Search the Washington 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.