2026 NPPES data Ophthalmology Physician NPI 1114190154 MD
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VICENTE DIAZ, MD

Ophthalmology Physician in STRATFORD, 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
1K
Medicare Part D claims · 259 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
58%
generic claims · 42% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.5637/100
▼ 10 pts below national avg 83.1 · [object Object]
Industry payments
$428.59
5 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: VICENTE DIAZ, MD is a Ophthalmology Physician ([object Object]) practicing in STRATFORD, Connecticut with a Medicare Part D prescribing footprint of 1K claims across 259 beneficiaries — 42% brand-name prescribing . Their CMS MIPS Final Score of 73.5637/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $428.59 across 5 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: VICENTE DIAZ, MD reported a CMS MIPS final score of 73.5637 out of 100, below the 83.1 national average, and filed 1,318 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)

VICENTE DIAZ, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

VICENTE DIAZ, MD at a glance

Below national average

NPI registry status

Active

Issued 04/10/2008

NPI 1114190154

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,318 7% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

73.5637/100 9.536299999999997% pts

Mid-tier 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

VICENTE DIAZ, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

Below national average
MIPS Final Score
73.5637/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 73.5637/100 vs national avg 83.1

0%100%National avg83%73.6%
MIPS final score (Ophthalmology Physician) — 73.5637/100 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).

VICENTE DIAZ, MD is a Ophthalmology Physician provider practicing in STRATFORD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1114190154. 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.

VICENTE DIAZ, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 495 HAWLEY LN, STRATFORD, CT, 06614, with a listed phone of (203) 375-5819. NPI 1114190154 was issued on 04/10/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIAZ 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 1,318 prescription claims written by this provider, covering 259 Medicare beneficiaries and totaling roughly $1.1 million in drug spend, split 42% brand-name and 58% 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 73.5637/100 for the 2023 performance year (Quality 75.8435, Cost 51.4318), 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

495 HAWLEY LN
STRATFORD, CT 06614

Provider Details

NPI 1114190154
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 04/10/2008

CMS Quality Score (MIPS)

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

73.5637
Final Score
Avg: 83.1
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where VICENTE DIAZ, MD 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.

YALE UNIVERSITY
NEW HAVEN, CT

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 VICENTE DIAZ, MD. Source: openpaymentsdata.cms.gov.

Total received

$429

Largest payer

Harrow Eye, 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 · Above average

VICENTE DIAZ, MD — brand share 42.0%
Specialty average (est.)

42% brand-name claims vs 58% generic, on 1,318 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.

1,318
Total Claims
$1.1M
Total Drug Cost
259
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,986
Total Day Supply
53,941
Brand vs Generic
42% brand / 58% generic
Brand Drug Cost
$1.0M
Generic Drug Cost
$29K

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.46
Gender Split
61% female / 39% male
Age Distribution
<65: 33, 65-74: 100, 75-84: 91, 85+: 35

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
241
Prednisolone Acetate
160
Ketorolac Tromethamine
97
Ciprofloxacin Hcl
86
Olopatadine Hcl
75
Restasis
Cyclosporine
73
Timolol Maleate
72
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
59
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
42
Dorzolamide Hcl
31

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

Ophthalmology Physician Overview

How VICENTE DIAZ, 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

VICENTE DIAZ, MD's 1,318 claims are below 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 DIAZ.

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

Frequently Asked Questions

What is VICENTE DIAZ, MD's specialty?
VICENTE DIAZ, MD specializes in Ophthalmology Physician and practices in STRATFORD, Connecticut. Credentials: MD.
How much does VICENTE DIAZ, MD prescribe under Medicare Part D?
In 2023, VICENTE DIAZ, MD wrote 1,318 Medicare Part D claims totaling $1.1M in drug costs for 259 beneficiaries.
What is VICENTE DIAZ, MD's Medicare quality score?
VICENTE DIAZ, MD has a CMS MIPS Final Score of 73.5637/100 (Quality: 75.8435, Cost: 51.4318). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is VICENTE DIAZ, MD located?
VICENTE DIAZ, MD is located at 495 HAWLEY LN, STRATFORD, CT, 06614. Phone: (203) 375-5819.
What is VICENTE DIAZ, MD's NPI number?
VICENTE DIAZ, MD's National Provider Identifier (NPI) is 1114190154, issued on 04/10/2008.
Does VICENTE DIAZ, MD prescribe more brand-name or generic drugs?
VICENTE DIAZ, MD's prescribing is 42% brand-name and 58% generic drugs by claim count, with $1.0M 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 VICENTE DIAZ, MD prescribe most often?
Based on 2023 Medicare Part D data, VICENTE DIAZ, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does VICENTE DIAZ, MD accept Medicare?
VICENTE DIAZ, MD appears in CMS Medicare data with 1,318 Part D claims and 259 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify VICENTE DIAZ, MD's credentials?
VICENTE DIAZ, MD's NPI is 1114190154 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