NPI registry status
Active
2026 NPPES data Optometrist NPI 1831348598 O.D.
Verify on CMS → David Eaton, O.D.
Optometrist in Granby, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 60,484 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
477
Medicare Part D claims · 136 beneficiaries · Optometrist avg: 257
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$23.18
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Eaton, O.D. filed 477 Medicare Part D claims in 2023 as a Optometrist in Granby, Connecticut, prescribing 75% generic.
- 477
- Part D claims, 2023
- 75%
- generic prescribing
- $23.18
- industry payments (Sunshine Act)
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.
David Eaton, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
477 Top 38% higher than 62% of 1,370,886 prescribers
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
What does the federal data show about David Eaton, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
477 86% vs specialty avg
Specialty distribution in Connecticut
How Optometrist compares to other specialties among Connecticut 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).
David Eaton, O.D. appears in the CMS NPPES registry as an Optometrist provider holding O.D. credentials at 16 E GRANBY RD, Granby, CT, 06035, with a listed phone of (860) 653-3008. NPI 1831348598 was issued on 09/17/2008.
Medicare Part D records for calendar year 2023 show 477 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $82K in drug spend, split 25% brand-name and 75% generic by claim count.
Optometrist is a high-volume specialty nationwide, with 60,484 enrolled providers across 56 states and an average of 257 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
Provider Details
| NPI | 1831348598 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 09/17/2008 |
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 David Eaton, O.D.. Source: openpaymentsdata.cms.gov.
Total received
$23
Largest payer
Bausch & Lomb Americas 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
David Eaton, O.D. - brand share 25.0%
Optometrist average
25% brand-name claims vs 75% generic, on 477 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.
477
Total Claims
$82K
Total Drug Cost
136
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 952
- Total Day Supply
- 26,863
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $68K
- Generic Drug Cost
- $15K
Patient Demographics
- Average Patient Age
- 77.5 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Eaton, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
202 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
83 claims
- Lumigan 36
Lumigan
36 claims
- Neomycin-Polymyxin… 31
Neomycin-Polymyxin-Dexameth
31 claims
- Timolol Maleate 23
Timolol Maleate
23 claims
- Restasis 14
Restasis
14 claims
- Xiidra 14
Xiidra
14 claims
- Travoprost 11
Travoprost
11 claims
| Drug | Claims |
|---|---|
| Latanoprost | 202 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 83 |
| Lumigan Bimatoprost | 36 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 31 |
| Timolol Maleate | 23 |
| Restasis Cyclosporine | 14 |
| Xiidra Lifitegrast | 14 |
| Travoprost | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How David Eaton, O.D. fits within the Optometrist landscape nationally.
60,484
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider
David Eaton, O.D.'s 477 claims are above the specialty average of 257.
Nearby Optometrist Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Eaton.
Dr. Annemarie Abramson
O.D.
Waterbury, CT
Dr. Aylin Adem
OD
Naugatuck, CT
Dr. George Adrian
O.D.
Groton, CT
Dr. Douglas Agranov
O.D.
Madison, CT
Shraiy Agrawal
Guilford, CT
Compare Optometrist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Optometrist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is David Eaton, O.D.'s specialty? ▼
David Eaton, O.D. specializes in Optometrist and practices in Granby, Connecticut. Credentials: O.D..
How much does David Eaton, O.D. prescribe under Medicare Part D? ▼
In 2023, David Eaton, O.D. wrote 477 Medicare Part D claims totaling $82K in drug costs for 136 beneficiaries.
Where is David Eaton, O.D. located? ▼
David Eaton, O.D. is located at 16 E GRANBY RD, Granby, CT, 06035. Phone: (860) 653-3008.
What is David Eaton, O.D.'s NPI number? ▼
David Eaton, O.D.'s National Provider Identifier (NPI) is 1831348598, issued on 09/17/2008.
Does David Eaton, O.D. prescribe more brand-name or generic drugs? ▼
David Eaton, O.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $68K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 60,484 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does David Eaton, O.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, David Eaton, O.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Eaton, O.D. accept Medicare? ▼
David Eaton, O.D. appears in CMS Medicare data with 477 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Eaton, O.D.'s credentials? ▼
David Eaton, O.D.'s NPI is 1831348598 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 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.