What is Lena Walker's NPI number?

Lena Walker's National Provider Identifier (NPI) is 1831127398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lena Walker's specialty?

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

Where is Lena Walker located?

Lena Walker's practice location on file with NPPES is 1864 Columbia Blvd, St Helens, OR 97051-1733.

What is Lena Walker's phone number?

The practice phone number listed in the NPPES registry for Lena Walker is (503) 397-2020.

Does Lena Walker accept Medicare?

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

Is Lena Walker's NPI active?

Yes — Lena Walker's NPI (1831127398) is active in the NPPES registry as of the last update on 2019-03-19.

IndividualActiveAccepts Medicare

Lena Walker, O.D.

NPI 1831127398 · Optometrist · St Helens, OR

Lena Walker, O.D. is a Optometrist provider in St Helens, OR (NPI 1831127398).

Provider details

NPI number: 1831127398
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Female
Sole proprietor: No
License: 2794ATI (OR)

Practice location

1864 Columbia Blvd

St Helens, OR 97051-1733

Phone: (503) 397-2020

Fax: (503) 397-7701

Street-level locationGet directions

More OR providers

Mailing address

Po Box 716

Saint Helens, OR 97051-0716

Specialties & taxonomies

OptometristPrimary152W00000XLicense 2794AT (OR)
Eye and Vision Services Providers
Optometrist152W00000XLicense 2794ATI (OR)
Eye and Vision Services Providers

Additional practice locations (1)

51675 Columbia River Hwy
Scappoose, OR 97056-4408
Phone: (503) 543-6313
Fax: (503) 543-6349

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

Profile Score

Established profile(74/100 index)

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

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
146 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

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	64	$88
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	61	$124
Photography of the Retina92250	21	$36

Typical Medicare-allowed amounts for these services range $36–$124 (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 · 2 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Latanoprost	57	11
Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol	16	—

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.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$287 across 4 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-06-30
Last updated: 2019-03-19

Frequently asked questions

What is Lena Walker's NPI number?: Lena Walker's National Provider Identifier (NPI) is 1831127398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Lena Walker's specialty?: Lena Walker is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
Where is Lena Walker located?: Lena Walker's practice location on file with NPPES is 1864 Columbia Blvd, St Helens, OR 97051-1733.
What is Lena Walker's phone number?: The practice phone number listed in the NPPES registry for Lena Walker is (503) 397-2020.
Does Lena Walker accept Medicare?: Lena Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Lena Walker's NPI active?: Yes — Lena Walker's NPI (1831127398) is active in the NPPES registry as of the last update on 2019-03-19.

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	64	$88
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	61	$124
Photography of the Retina92250	21	$36

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Latanoprost	57	11
Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol	16	—

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$287 across 4 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments