NPI registry status
Active
2026 NPPES data Optometrist NPI 1356327407 O.D.
Verify on CMS → Wayne Castagna, O.D.
Optometrist in Tolland, 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
549
Medicare Part D claims · 109 beneficiaries · Optometrist avg: 257
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$16.68
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
Wayne Castagna, O.D. filed 549 Medicare Part D claims in 2023 as a Optometrist in Tolland, Connecticut, prescribing 62% generic.
- 549
- Part D claims, 2023
- 62%
- generic prescribing
- $16.68
- 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.
Wayne Castagna, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
549 Top 34% higher than 66% 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 Wayne Castagna, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
549 114% 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).
Wayne Castagna, O.D. appears in the CMS NPPES registry as an Optometrist provider holding O.D. credentials at 23C FIELDSTONE CMNS, Tolland, CT, 06084, with a listed phone of (860) 826-4460. NPI 1356327407 was issued on 12/21/2005.
Medicare Part D records for calendar year 2023 show 549 prescription claims written by this provider, covering 109 Medicare beneficiaries and totaling roughly $97K in drug spend, split 38% brand-name and 62% 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 | 1356327407 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 12/21/2005 |
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 Wayne Castagna, O.D.. Source: openpaymentsdata.cms.gov.
Total received
$17
Largest payer
Johnson & Johnson Vision Care, 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
Wayne Castagna, O.D. - brand share 38.0%
Optometrist average
38% brand-name claims vs 62% generic, on 549 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.
549
Total Claims
$97K
Total Drug Cost
109
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 804
- Total Day Supply
- 22,323
- Brand vs Generic
- 38% brand / 62% generic
- Brand Drug Cost
- $83K
- Generic Drug Cost
- $14K
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.06
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Wayne Castagna, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
270 claims
- Timolol Maleate 67
Timolol Maleate
67 claims
- Lumigan 40
Lumigan
40 claims
- Xiidra 40
Xiidra
40 claims
- Restasis 21
Restasis
21 claims
- Loteprednol Etabon… 19
Loteprednol Etabonate
19 claims
- Brinzolamide 15
Brinzolamide
15 claims
- Brimonidine Tartrate 14
Brimonidine Tartrate
14 claims
| Drug | Claims |
|---|---|
| Latanoprost | 270 |
| Timolol Maleate | 67 |
| Lumigan Bimatoprost | 40 |
| Xiidra Lifitegrast | 40 |
| Restasis Cyclosporine | 21 |
| Loteprednol Etabonate | 19 |
| Brinzolamide | 15 |
| Brimonidine Tartrate | 14 |
| Dorzolamide Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Wayne Castagna, O.D. fits within the Optometrist landscape nationally.
60,484
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider
Wayne Castagna, O.D.'s 549 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 Castagna.
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 Wayne Castagna, O.D.'s specialty? ▼
Wayne Castagna, O.D. specializes in Optometrist and practices in Tolland, Connecticut. Credentials: O.D..
How much does Wayne Castagna, O.D. prescribe under Medicare Part D? ▼
In 2023, Wayne Castagna, O.D. wrote 549 Medicare Part D claims totaling $97K in drug costs for 109 beneficiaries.
Where is Wayne Castagna, O.D. located? ▼
Wayne Castagna, O.D. is located at 23C FIELDSTONE CMNS, Tolland, CT, 06084. Phone: (860) 826-4460.
What is Wayne Castagna, O.D.'s NPI number? ▼
Wayne Castagna, O.D.'s National Provider Identifier (NPI) is 1356327407, issued on 12/21/2005.
Does Wayne Castagna, O.D. prescribe more brand-name or generic drugs? ▼
Wayne Castagna, O.D.'s prescribing is 38% brand-name and 62% generic drugs by claim count, with $83K 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 Wayne Castagna, O.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Wayne Castagna, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Wayne Castagna, O.D. accept Medicare? ▼
Wayne Castagna, O.D. appears in CMS Medicare data with 549 Part D claims and 109 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Wayne Castagna, O.D.'s credentials? ▼
Wayne Castagna, O.D.'s NPI is 1356327407 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.