2026 NPPES data Ophthalmology Physician NPI 1114055217 M.D.
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IRENE NASADUKE, M.D.

Ophthalmology Physician in STAMFORD, 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
677
Medicare Part D claims · 42 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: IRENE NASADUKE, M.D. is a Ophthalmology Physician ([object Object]) practicing in STAMFORD, Connecticut with a Medicare Part D prescribing footprint of 677 claims across 42 beneficiaries — 14% brand-name prescribing .

What stands out: IRENE NASADUKE, M.D. filed 677 Medicare Part D claims in 2023 across STAMFORD, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

IRENE NASADUKE, 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).

IRENE NASADUKE, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 03/01/2007

NPI 1114055217

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

677 52% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

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

Specialty board-certification context

Estimated specialty board-certified rate — Ophthalmology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ophthalmology Physician ABMS/AOA estimate

Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

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).

IRENE NASADUKE, M.D. is a Ophthalmology Physician provider practicing in STAMFORD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1114055217. 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.

IRENE NASADUKE, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 1150 SUMMER STREET, STAMFORD, CT, 06905, with a listed phone of (203) 357-0770. NPI 1114055217 was issued on 03/01/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NASADUKE 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 677 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $83K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 3.1%. 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.

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

1150 SUMMER STREET
STAMFORD, CT 06905

Provider Details

NPI 1114055217
Specialty Ophthalmology Physician
Credentials M.D.
Gender Female
NPI Issued 03/01/2007

Brand vs generic prescribing mix · Typical

IRENE NASADUKE, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 677 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.

677
Total Claims
$83K
Total Drug Cost
42
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,278
Total Day Supply
37,760
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$59K
Generic Drug Cost
$23K
Opioid Claims
21 (3.1% rate)
Antibiotic Claims
13

Patient Demographics

Average Patient Age
77.3 years
Avg HCC Risk Score
1.26
Gender Split
64% female / 36% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amlodipine Besylate
66
Metoprolol Succinate
53
Zolpidem Tartrate
34
Latanoprost
26
Xarelto
Rivaroxaban
26
Baclofen
24
Omeprazole
20
Potassium Chloride
18
Metformin Hcl Er
Metformin Hcl
17
Gabapentin
16

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

Ophthalmology Physician Overview

How IRENE NASADUKE, M.D. 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

IRENE NASADUKE, M.D.'s 677 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 NASADUKE.

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

Frequently Asked Questions

What is IRENE NASADUKE, M.D.'s specialty?
IRENE NASADUKE, M.D. specializes in Ophthalmology Physician and practices in STAMFORD, Connecticut. Credentials: M.D..
How much does IRENE NASADUKE, M.D. prescribe under Medicare Part D?
In 2023, IRENE NASADUKE, M.D. wrote 677 Medicare Part D claims totaling $83K in drug costs for 42 beneficiaries.
Where is IRENE NASADUKE, M.D. located?
IRENE NASADUKE, M.D. is located at 1150 SUMMER STREET, STAMFORD, CT, 06905. Phone: (203) 357-0770.
What is IRENE NASADUKE, M.D.'s NPI number?
IRENE NASADUKE, M.D.'s National Provider Identifier (NPI) is 1114055217, issued on 03/01/2007.
Does IRENE NASADUKE, M.D. prescribe more brand-name or generic drugs?
IRENE NASADUKE, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $59K in brand drug costs.
Does IRENE NASADUKE, M.D. prescribe opioids?
Yes, IRENE NASADUKE, M.D. had 21 opioid claims in 2023 with an opioid prescribing rate of 3.1%.
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 IRENE NASADUKE, M.D. prescribe most often?
Based on 2023 Medicare Part D data, IRENE NASADUKE, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Metoprolol Succinate, Zolpidem Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does IRENE NASADUKE, M.D. accept Medicare?
IRENE NASADUKE, M.D. appears in CMS Medicare data with 677 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify IRENE NASADUKE, M.D.'s credentials?
IRENE NASADUKE, M.D.'s NPI is 1114055217 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

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