NPI registry status
Active
2026 NPPES data Glaucoma Specialist (Ophthalmology) Physician NPI 1740279991 M.D.
Verify on CMS → Dale Oates, M.D.
Glaucoma Specialist (Ophthalmology) Physician in East Weymouth, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 356 in Glaucoma Specialist (Ophthalmology) Physician, 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
2K
Medicare Part D claims · 370 beneficiaries · Glaucoma Specialist (Ophthalmology) Physician avg: 3K
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Dale Oates, M.D. filed 1,539 Medicare Part D claims in 2023 as a Glaucoma Specialist (Ophthalmology) Physician in East Weymouth, Massachusetts, prescribing 76% generic.
- 2K
- Part D claims, 2023
- 76%
- generic prescribing
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.
Dale Oates, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,539 Top 19% higher than 81% 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
◑
Board-eligible specialty (heuristic, not verified)
Dale Oates, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Dale Oates, M.D.?
Quality data not reportedPrimary specialty
Glaucoma Specialist (Ophthalmology) Physician
Medicare Part D claims
1,539 48% vs specialty avg
Specialty distribution in Massachusetts
How Glaucoma Specialist (Ophthalmology) Physician compares to other specialties among Massachusetts 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 Glaucoma Specialist (Ophthalmology) Physician. 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).
Dale Oates, M.D. appears in the CMS NPPES registry as a Glaucoma Specialist (Ophthalmology) Physician provider holding M.D. credentials at 97 LIBBEY INDUSTRIAL PKWY STE 100, East Weymouth, MA, 02189, with a listed phone of (781) 331-3300. NPI 1740279991 was issued on 10/20/2005.
Medicare Part D records for calendar year 2023 show 1,539 prescription claims written by this provider, covering 370 Medicare beneficiaries and totaling roughly $191K in drug spend, split 24% brand-name and 76% generic by claim count.
Glaucoma Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 356 enrolled providers across 42 states and an average of 2,962 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 | 1740279991 |
|---|---|
| Specialty | Glaucoma Specialist (Ophthalmology) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/20/2005 |
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Dale Oates, M.D.. To verify Dale Oates, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Dale Oates, M.D. - brand share 24.0%
Glaucoma Specialist (Ophthalmology) Physician average
24% brand-name claims vs 76% generic, on 1,539 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.
1,539
Total Claims
$191K
Total Drug Cost
370
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,851
- Total Day Supply
- 81,928
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $154K
- Generic Drug Cost
- $37K
Patient Demographics
- Average Patient Age
- 80.8 years
- Avg HCC Risk Score
- 1.17
- Gender Split
- 62% female / 38% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dale Oates, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
605 claims
- Timolol Maleate 195
Timolol Maleate
195 claims
- Dorzolamide-Timolol 174
Dorzolamide-Timolol
174 claims
- Brimonidine Tartrate 106
Brimonidine Tartrate
106 claims
- Lumigan 75
Lumigan
75 claims
- Rhopressa 58
Rhopressa
58 claims
- Erythromycin 41
Erythromycin
41 claims
- Travoprost 32
Travoprost
32 claims
| Drug | Claims |
|---|---|
| Latanoprost | 605 |
| Timolol Maleate | 195 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 174 |
| Brimonidine Tartrate | 106 |
| Lumigan Bimatoprost | 75 |
| Rhopressa Netarsudil Mesylate | 58 |
| Erythromycin Erythromycin Base | 41 |
| Travoprost | 32 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 27 |
| Bimatoprost | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Glaucoma Specialist (Ophthalmology) Physician in MA →
All providers in Massachusetts →
Compare specialties →
Glaucoma Specialist (Ophthalmology) Physician Overview
How Dale Oates, M.D. fits within the Glaucoma Specialist (Ophthalmology) Physician landscape nationally.
356
Glaucoma Specialist (Ophthalmology) Physician Providers in US
42
States with Glaucoma Specialist (Ophthalmology) Physician
2,962
Avg Claims per Provider
Dale Oates, M.D.'s 1,539 claims are below the specialty average of 2,962.
Nearby Glaucoma Specialist (Ophthalmology) Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Oates.
Dr. Aseef Ahmed
DO
Boston, MA
Dr. Paul Cotran
MD
Burlington, MA
Dr. Manishi Desai
M.D.
Taunton, MA
Dr. Babak Eliassi-Rad
MD
N Dartmouth, MA
Dr. Michael Giovingo
M.D.
Boston, MA
Compare Glaucoma Specialist (Ophthalmology) Physician 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 Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Glaucoma Specialist (Ophthalmology) Physician 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 Dale Oates, M.D.'s specialty? ▼
Dale Oates, M.D. specializes in Glaucoma Specialist (Ophthalmology) Physician and practices in East Weymouth, Massachusetts. Credentials: M.D..
How much does Dale Oates, M.D. prescribe under Medicare Part D? ▼
In 2023, Dale Oates, M.D. wrote 1,539 Medicare Part D claims totaling $191K in drug costs for 370 beneficiaries.
Where is Dale Oates, M.D. located? ▼
Dale Oates, M.D. is located at 97 LIBBEY INDUSTRIAL PKWY STE 100, East Weymouth, MA, 02189. Phone: (781) 331-3300.
What is Dale Oates, M.D.'s NPI number? ▼
Dale Oates, M.D.'s National Provider Identifier (NPI) is 1740279991, issued on 10/20/2005.
Does Dale Oates, M.D. prescribe more brand-name or generic drugs? ▼
Dale Oates, M.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $154K in brand drug costs.
How many Glaucoma Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 356 Glaucoma Specialist (Ophthalmology) Physician providers across 42 states in the US. The average Glaucoma Specialist (Ophthalmology) Physician provider writes 2,962 Medicare Part D claims per year.
What drugs does Dale Oates, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Dale Oates, M.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dale Oates, M.D. accept Medicare? ▼
Dale Oates, M.D. appears in CMS Medicare data with 1,539 Part D claims and 370 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dale Oates, M.D.'s credentials? ▼
Dale Oates, M.D.'s NPI is 1740279991 with credentials M.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.