NPI registry status
Active
2026 NPPES data Optometrist NPI 1649278912 O.D.
Verify on CMS → Todd Hamilton, O.D.
Optometrist in Brunswick, Maine.
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
664
Medicare Part D claims · 142 beneficiaries · Optometrist avg: 279
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$207.58
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Todd Hamilton, O.D. filed 664 Medicare Part D claims in 2024 as an Optometrist in Brunswick, Maine, prescribing 80% generic.
- 664
- Part D claims, 2024
- 80%
- generic prescribing
- $207.58
- 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 Todd Hamilton, 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 1649278912), first enumerated 07/12/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 664 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$207.58 in reported industry payments (4 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 1649278912 · Optometrist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1649278912
- ENUM-LEGACY 2005
- TAX-MEGA 61K Optometrist
- RX-LIGHT 664
- BOOK-THIN 301 in Maine
- PHOTO-ENUM Rita Ellent, O.D. · 2005
Todd Hamilton, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
664 ≥ 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 Todd Hamilton, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
664 138% vs specialty avg
Specialty distribution in Maine
How Optometrist compares to other specialties among Maine 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 | 1649278912 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 07/12/2005 |
Hospital and facility affiliations
Facilities where Todd Hamilton, O.D. 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.
Maine Optometry PA
Gorham, ME
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 Todd Hamilton, O.D.. Source: openpaymentsdata.cms.gov.
Total received
$208
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
Todd Hamilton, O.D. - brand share 20.0%
Optometrist average
20% brand-name claims vs 80% generic, on 664 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.
664
Total Claims
$86K
Total Drug Cost
142
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,215.767
- Total Day Supply
- 34,803
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $68K
- Generic Drug Cost
- $18K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 75.0 years
- Avg HCC Risk Score
- 1.01
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Todd Hamilton, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
284 claims
- Timolol Maleate 74
Timolol Maleate
74 claims
- Brimonidine Tartrate 53
Brimonidine Tartrate
53 claims
- Dorzolamide-Timolol 30
Dorzolamide-Timolol
30 claims
- Restasis 25
Restasis
25 claims
- Travoprost 24
Travoprost
24 claims
- Dorzolamide Hcl 21
Dorzolamide Hcl
21 claims
- Brinzolamide 18
Brinzolamide
18 claims
| Drug | Claims |
|---|---|
| Latanoprost | 284 |
| Timolol Maleate | 74 |
| Brimonidine Tartrate | 53 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 30 |
| Restasis Cyclosporine | 25 |
| Travoprost | 24 |
| Dorzolamide Hcl | 21 |
| Brinzolamide | 18 |
| Tobramycin-Dexamethasone Tobramycin/Dexamethasone | 18 |
| Simbrinza Brinzolamide/Brimonidine Tart | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Todd Hamilton, O.D. fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
Todd Hamilton, O.D.'s 664 claims are above the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Hamilton, both outside Maine 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 Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Hamilton.
One of 301 Optometrist providers enrolled in Maine, 5 are shown here.
Dr. Amy Abbott
O.D.
South Portland, ME
Dr. Andre Achenbach
O.D.
Brunswick, ME
Dr. Rachel Achenbach
OD
Windham, ME
Dr. Nirupama Aggarwal
OD
Portland, ME
Dr. Paul Albert
O.D.
Ellsworth, ME
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Todd Hamilton, O.D.'s specialty? ▼
Todd Hamilton, O.D. specializes in Optometrist and practices in Brunswick, Maine. Credentials: O.D..
How much does Todd Hamilton, O.D. prescribe under Medicare Part D? ▼
In 2024, Todd Hamilton, O.D. wrote 664 Medicare Part D claims totaling $86K in drug costs for 142 beneficiaries.
Where is Todd Hamilton, O.D. located? ▼
Todd Hamilton, O.D. is located at 82 MAINE ST, Brunswick, ME, 04011. Phone: (207) 729-8474.
What is Todd Hamilton, O.D.'s NPI number? ▼
Todd Hamilton, O.D.'s National Provider Identifier (NPI) is 1649278912, issued on 07/12/2005.
Does Todd Hamilton, O.D. prescribe more brand-name or generic drugs? ▼
Todd Hamilton, O.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $68K 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 Todd Hamilton, O.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Todd Hamilton, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Todd Hamilton, O.D. accept Medicare? ▼
Todd Hamilton, O.D. appears in CMS Medicare data with 664 Part D claims and 142 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Todd Hamilton, O.D.'s credentials? ▼
Todd Hamilton, O.D.'s NPI is 1649278912 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.