What is Ian Cheslock's NPI number?

Ian Cheslock's National Provider Identifier (NPI) is 1003580762, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ian Cheslock's specialty?

Ian Cheslock is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is Ian Cheslock located?

Ian Cheslock's practice location on file with NPPES is 950 11th Ave, Longview, WA 98632-2504.

What is Ian Cheslock's phone number?

The practice phone number listed in the NPPES registry for Ian Cheslock is (360) 577-1500.

Does Ian Cheslock accept Medicare?

Ian Cheslock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Ian Cheslock's NPI active?

Yes — Ian Cheslock's NPI (1003580762) is active in the NPPES registry as of the last update on 2021-08-05.

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Ian Cheslock

NPI 1003580762 · Optometrist · Longview, WA

Ian Cheslock is a Optometrist provider in Longview, WA (NPI 1003580762).

Provider details

NPI number: 1003580762
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Sex: Male
Sole proprietor: No
License: 61169322 (WA)

Practice location

950 11th Ave

Longview, WA 98632-2504

Phone: (360) 577-1500

Fax: (360) 425-0735

Street-level locationGet directions

More WA providers

Mailing address

950 11th Ave

Longview, WA 98632-2504

Specialties & taxonomies

OptometristPrimary152W00000XLicense 61169322 (WA)
Eye and Vision Services Providers

Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Basic profile(48/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
5 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
162 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	54	$81
Established Patient Complete Exam of Visual System92014	47	$120
Photography of the Retina92250	30	$34
New Patient Complete Exam of Visual System92004	18	$140
Imaging of Retina92134	13	$38

Typical Medicare-allowed amounts for these services range $34–$140 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)
Latanoprost	22

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2021-08-05
Last updated: 2021-08-05
Certified: 2021-08-05

Frequently asked questions

What is Ian Cheslock's NPI number?: Ian Cheslock's National Provider Identifier (NPI) is 1003580762, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Ian Cheslock's specialty?: Ian Cheslock is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
Where is Ian Cheslock located?: Ian Cheslock's practice location on file with NPPES is 950 11th Ave, Longview, WA 98632-2504.
What is Ian Cheslock's phone number?: The practice phone number listed in the NPPES registry for Ian Cheslock is (360) 577-1500.
Does Ian Cheslock accept Medicare?: Ian Cheslock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Ian Cheslock's NPI active?: Yes — Ian Cheslock's NPI (1003580762) is active in the NPPES registry as of the last update on 2021-08-05.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	54	$81
Established Patient Complete Exam of Visual System92014	47	$120
Photography of the Retina92250	30	$34
New Patient Complete Exam of Visual System92004	18	$140
Imaging of Retina92134	13	$38

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)
Latanoprost	22

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)