NPI registry status
Active
2026 NPPES data Optometrist NPI 1235132382 O. D.
Verify on CMS → William Walker, O. D.
Optometrist in Asheboro, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
652
Medicare Part D claims · 155 beneficiaries · Optometrist avg: 279
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$13.37
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Walker, O. D. filed 652 Medicare Part D claims in 2024 as an Optometrist in Asheboro, North Carolina, prescribing 77% generic.
- 652
- Part D claims, 2024
- 77%
- generic prescribing
- $13.37
- industry payments (Sunshine Act)
- ≥68th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about William Walker, O. D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1235132382), first enumerated 05/23/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 652 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$13.37 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1235132382 · Optometrist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1235132382
- ENUM-LEGACY 2005
- TAX-MEGA 61K Optometrist
- RX-LIGHT 652
- BOOK-LIGHT 1,443 in North Carolina
- PHOTO-ENUM Hughlon Scarbrough,… · 2005
William Walker, O. D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
652 ≥ 68th percentile 68% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about William Walker, O. D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
652 134% vs specialty avg
Specialty distribution in North Carolina
How Optometrist compares to other specialties among North Carolina providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Optometrist. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1235132382 |
|---|---|
| Specialty | Optometrist |
| Credentials | O. D. |
| Gender | Male |
| NPI Issued | 05/23/2005 |
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 William Walker, O. D.. Source: openpaymentsdata.cms.gov.
Total received
$13
Largest payer
Alcon Vision LLC
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 · Typical
William Walker, O. D. - brand share 23.0%
Optometrist average
23% brand-name claims vs 77% generic, on 652 2024 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 2024.
652
Total Claims
$34K
Total Drug Cost
155
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 998.3
- Total Day Supply
- 27,057
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $28K
- Generic Drug Cost
- $6K
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 72.4 years
- Avg HCC Risk Score
- 1.04
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 24, 65-74: 62, 75-84: 55, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Walker, O. D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
334 claims
- Neomycin-Polymyxin… 78
Neomycin-Polymyxin-Dexameth
78 claims
- Timolol Maleate 59
Timolol Maleate
59 claims
- Brimonidine Tartrate 44
Brimonidine Tartrate
44 claims
- Lumigan 26
Lumigan
26 claims
- Dorzolamide-Timolol 19
Dorzolamide-Timolol
19 claims
- Ofloxacin 17
Ofloxacin
17 claims
- Restasis 13
Restasis
13 claims
| Drug | Claims |
|---|---|
| Latanoprost | 334 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 78 |
| Timolol Maleate | 59 |
| Brimonidine Tartrate | 44 |
| Lumigan Bimatoprost | 26 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 19 |
| Ofloxacin | 17 |
| Restasis Cyclosporine | 13 |
| Doxycycline Hyclate | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How William Walker, O. D. fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
William Walker, O. D.'s 652 claims are above the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Walker, both outside North Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Walker.
One of 1,443 Optometrist providers enrolled in North Carolina, 5 are shown here.
Dr. Charlotte Ablott
OD
Salisbury, NC
Dr. Eric Ablott
OD
Randleman, NC
Dr. John Adams
OD
Lumberton, NC
Dr. Rick Adams
OD
Rocky Mount, NC
Dr. William Adams
O.D.
Benson, NC
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Walker, O. D.'s specialty? ▼
William Walker, O. D. specializes in Optometrist and practices in Asheboro, North Carolina. Credentials: O. D..
How much does William Walker, O. D. prescribe under Medicare Part D? ▼
In 2024, William Walker, O. D. wrote 652 Medicare Part D claims totaling $34K in drug costs for 155 beneficiaries.
Where is William Walker, O. D. located? ▼
William Walker, O. D. is located at 402 S COX ST, Asheboro, NC, 27203. Phone: (336) 625-4359.
What is William Walker, O. D.'s NPI number? ▼
William Walker, O. D.'s National Provider Identifier (NPI) is 1235132382, issued on 05/23/2005.
Does William Walker, O. D. prescribe more brand-name or generic drugs? ▼
William Walker, O. D.'s prescribing is 23% brand-name and 77% generic drugs by claim count, with $28K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does William Walker, O. D. prescribe most often? ▼
Based on 2024 Medicare Part D data, William Walker, O. D.'s most frequently prescribed drugs include Latanoprost, Neomycin-Polymyxin-Dexameth, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Walker, O. D. accept Medicare? ▼
William Walker, O. D. appears in CMS Medicare data with 652 Part D claims and 155 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Walker, O. D.'s credentials? ▼
William Walker, O. D.'s NPI is 1235132382 with credentials O. D.. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.