2026 NPPES data Ophthalmology Physician NPI 1386140101 MD
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BRIAN WALKER, MD

Ophthalmology Physician in EUGENE, Oregon. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 450 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
67%
generic claims · 33% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$325.85
14 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BRIAN WALKER, MD filed 1,364 Medicare Part D claims in 2023 as a Ophthalmology Physician in EUGENE, Oregon, prescribing 67% generic.

1K
Part D claims, 2023
67%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

BRIAN WALKER, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,364 Top 21% higher than 79% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

BRIAN WALKER, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about BRIAN WALKER, MD?

Quality data not reported

NPI registry status

Active

Issued 04/02/2018

NPI 1386140101

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,364 4% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Oregon

How Ophthalmology Physician compares to other specialties among Oregon providers

Oregon providers

Ophthalmology Physician share within Oregon

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Ophthalmology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ophthalmology Physician ABMS/AOA estimate

Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

BRIAN WALKER, MD is a Ophthalmology Physician provider practicing in EUGENE, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1386140101. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

BRIAN WALKER, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 1550 OAK ST STE 3, EUGENE, OR, 97401, with a listed phone of (541) 683-2020. NPI 1386140101 was issued on 04/02/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALKER most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,364 prescription claims written by this provider, covering 450 Medicare beneficiaries and totaling roughly $91K in drug spend, split 33% brand-name and 67% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1550 OAK ST STE 3
EUGENE, OR 97401

Provider Details

NPI 1386140101
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 04/02/2018

Hospital and facility affiliations

Facilities where BRIAN WALKER, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

THE EYE CENTER LLC
NEWPORT, OR

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for BRIAN WALKER, MD. Source: openpaymentsdata.cms.gov.

Total received

$326

Largest payer

RxSight Inc

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

BRIAN WALKER, MD — brand share 33.0%
Specialty average (est.)

33% brand-name claims vs 67% generic, on 1,364 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,364
Total Claims
$91K
Total Drug Cost
450
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,141
Total Day Supply
59,619
Brand vs Generic
33% brand / 67% generic
Brand Drug Cost
$60K
Generic Drug Cost
$32K
Antibiotic Claims
15

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
1.10
Gender Split
63% female / 37% male
Age Distribution
<65: 30, 65-74: 195, 75-84: 166, 85+: 59

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Latanoprost
276
Prednisolone Acetate
197
Ofloxacin
147
Ketorolac Tromethamine
143
Brimonidine Tartrate
100
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
99
Timolol Maleate
82
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
46
Dorzolamide Hcl
40
Sodium Chloride
0.9 % Sodium Chloride
30

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Ophthalmology Physician Overview

How BRIAN WALKER, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

BRIAN WALKER, MD's 1,364 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as WALKER.

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRIAN WALKER, MD's specialty?
BRIAN WALKER, MD specializes in Ophthalmology Physician and practices in EUGENE, Oregon. Credentials: MD.
How much does BRIAN WALKER, MD prescribe under Medicare Part D?
In 2023, BRIAN WALKER, MD wrote 1,364 Medicare Part D claims totaling $91K in drug costs for 450 beneficiaries.
Where is BRIAN WALKER, MD located?
BRIAN WALKER, MD is located at 1550 OAK ST STE 3, EUGENE, OR, 97401. Phone: (541) 683-2020.
What is BRIAN WALKER, MD's NPI number?
BRIAN WALKER, MD's National Provider Identifier (NPI) is 1386140101, issued on 04/02/2018.
Does BRIAN WALKER, MD prescribe more brand-name or generic drugs?
BRIAN WALKER, MD's prescribing is 33% brand-name and 67% generic drugs by claim count, with $60K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does BRIAN WALKER, MD prescribe most often?
Based on 2023 Medicare Part D data, BRIAN WALKER, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Ofloxacin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRIAN WALKER, MD accept Medicare?
BRIAN WALKER, MD appears in CMS Medicare data with 1,364 Part D claims and 450 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRIAN WALKER, MD's credentials?
BRIAN WALKER, MD's NPI is 1386140101 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology