Ian Matthew Cheslock
Optometrist · Longview, WA
Ian Matthew Cheslock is an optometrist with a practice address in Longview, Washington, and NPI 1003580762, issued on Aug 5, 2021. Check the license (Washington 61169322, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ian Matthew Cheslock
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 61169322 WA
Self-reported in NPPES; status is on the state search - Practice location
- 950 11TH Ave, Longview, WA 98632
- Phone
- (360) 577-1500
- Enumerated
- Aug 5, 2021
- Record last updated
- Aug 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (360) 425-0735
- Medicare enrollment
- Enrolled (PECOS I20230921002142); accepts Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 2021
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,641 in Washington → Look up another NPI →
Also registered at 950 11TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hanna BadgerOptometrist1790577880
- John Cheslock, ODOptometrist1790873370
- William Cheslock, ODOptometrist1649368200
- Brandon MalmstadtOptometrist1962102947
- George ObermeyerHearing Instrument Specialist1801910161
- Ireatha Schrepel, HASHearing Instrument Specialist1194152603
Verify Ian Matthew Cheslock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license 61169322Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average optometrist in 2024
90 Medicare Part D claims for 36 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Latanoprost22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Warm Springs Health And Wellness Dhhs Ihs Warm Springs Service UnitWarm Springs, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Matthew Cheslock among 1,641 optometrist records in Washington
Ian Matthew Cheslock is one of 1,641 optometrist records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 88% of them.
- NPI issued2021 · 88% of these records are older, 10% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2021 · median 2010 among the 949 with a school on file
- Record last updated2021 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 optometrist records list a practice address in Longview
They are 19 of the 1,933 NPPES records with a practice address in Longview, and 1,641 optometrist records in Washington.
All 1,641 in Washington → Every provider in Longview → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Michael Berger, O.D.Longview, WA 986321073526554
- Barbara Berger, O.D.Longview, WA 986321780778670
- William Cheslock, ODLongview, WA 986321649368200
- John Cheslock, ODLongview, WA 986321790873370
- Jeffrey Fries, ODLongview, WA 986321407821499
- James Hennig, O.D.Longview, WA 986321912008269
- Kendra Kallemeyn, O.D.Longview, WA 986321669707741
- Paul NefedovLongview, WA 986321487017075
Common questions
What is Ian Matthew Cheslock's NPI number?
Ian Matthew Cheslock's National Provider Identifier (NPI) is 1003580762, issued on Aug 5, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Ian Matthew Cheslock located?
The NPPES record lists a practice address at 950 11TH Ave, Longview, WA, 98632. Phone: (360) 577-1500. Providers update this record themselves, so call before visiting.
How can I verify Ian Matthew Cheslock's license?
NPPES lists Washington license number 61169322, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Ian Matthew Cheslock prescribe under Medicare Part D?
In 2024, Ian Matthew Cheslock had 90 Medicare Part D claims for 36 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Ian Matthew Cheslock's MIPS final score?
The 2023 MIPS final score is 94.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.