2026 NPPES data Ophthalmology Physician NPI 1669444105 MD
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PAUL MASI, MD

Ophthalmology Physician in HAMDEN, Connecticut. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 889 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.3702/100
▼ 4 pts below national avg 83.1 · [object Object]
Industry payments
$133.96
6 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: PAUL MASI, MD is a Ophthalmology Physician ([object Object]) practicing in HAMDEN, Connecticut with a Medicare Part D prescribing footprint of 3K claims across 889 beneficiaries — 41% brand-name prescribing . Their CMS MIPS Final Score of 79.3702/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $133.96 across 6 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: PAUL MASI, MD reported a CMS MIPS final score of 79.3702 out of 100, below the 83.1 national average, and filed 3,429 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PAUL MASI, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

PAUL MASI, MD at a glance

Near national average

NPI registry status

Active

Issued 02/07/2006

NPI 1669444105

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

3,429 141% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

79.3702/100 3.7297999999999973% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Connecticut

How Ophthalmology Physician compares to other specialties among Connecticut providers

Connecticut providers

Ophthalmology Physician share within Connecticut

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Connecticut

Medicare quality performance — MIPS

PAUL MASI, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

Near national average
MIPS Final Score
79.3702/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 79.3702/100 vs national avg 83.1

0%100%National avg83%79.4%
MIPS final score (Ophthalmology Physician) — 79.3702/100 vs national avg 83.1

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).

PAUL MASI, MD is a Ophthalmology Physician provider practicing in HAMDEN, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1669444105. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

PAUL MASI, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 2880 OLD DIXWELL AVE, HAMDEN, CT, 06518, with a listed phone of (203) 248-6365. NPI 1669444105 was issued on 02/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MASI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,429 prescription claims written by this provider, covering 889 Medicare beneficiaries and totaling roughly $775K in drug spend, split 41% brand-name and 59% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.3702/100 for the 2023 performance year (Quality 92.8507, Cost 59.2167), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

2880 OLD DIXWELL AVE
HAMDEN, CT 06518

Provider Details

NPI 1669444105
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 02/07/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

79.3702
Final Score
Avg: 83.1
92.8507
Quality
59.2167
Cost
75
Promoting Interoperability

Reporting: Individual

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 PAUL MASI, MD. Source: openpaymentsdata.cms.gov.

Total received

$134

Largest payer

SUN PHARMACEUTICAL INDUSTRIES 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

PAUL MASI, MD — brand share 41.0%
Specialty average (est.)

41% brand-name claims vs 59% generic, on 3,429 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.

3,429
Total Claims
$775K
Total Drug Cost
889
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,779
Total Day Supply
195,207
Brand vs Generic
41% brand / 59% generic
Brand Drug Cost
$671K
Generic Drug Cost
$105K
Antibiotic Claims
25

Patient Demographics

Average Patient Age
77.8 years
Avg HCC Risk Score
1.31
Gender Split
62% female / 38% male
Age Distribution
<65: 20, 65-74: 288, 75-84: 395, 85+: 186

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Latanoprost
764
Prednisolone Acetate
367
Ofloxacin
313
Timolol Maleate
282
Lumigan
Bimatoprost
193
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
153
Ketorolac Tromethamine
132
Restasis
Cyclosporine
126
Dorzolamide Hcl
107
Erythromycin
Erythromycin Base
92

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Ophthalmology Physician Overview

How PAUL MASI, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

PAUL MASI, MD's 3,429 claims are above the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as MASI.

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PAUL MASI, MD's specialty?
PAUL MASI, MD specializes in Ophthalmology Physician and practices in HAMDEN, Connecticut. Credentials: MD.
How much does PAUL MASI, MD prescribe under Medicare Part D?
In 2023, PAUL MASI, MD wrote 3,429 Medicare Part D claims totaling $775K in drug costs for 889 beneficiaries.
What is PAUL MASI, MD's Medicare quality score?
PAUL MASI, MD has a CMS MIPS Final Score of 79.3702/100 (Quality: 92.8507, Cost: 59.2167). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is PAUL MASI, MD located?
PAUL MASI, MD is located at 2880 OLD DIXWELL AVE, HAMDEN, CT, 06518. Phone: (203) 248-6365.
What is PAUL MASI, MD's NPI number?
PAUL MASI, MD's National Provider Identifier (NPI) is 1669444105, issued on 02/07/2006.
Does PAUL MASI, MD prescribe more brand-name or generic drugs?
PAUL MASI, MD's prescribing is 41% brand-name and 59% generic drugs by claim count, with $671K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does PAUL MASI, MD prescribe most often?
Based on 2023 Medicare Part D data, PAUL MASI, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Ofloxacin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PAUL MASI, MD accept Medicare?
PAUL MASI, MD appears in CMS Medicare data with 3,429 Part D claims and 889 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PAUL MASI, MD's credentials?
PAUL MASI, MD's NPI is 1669444105 with credentials MD. 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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