2026 NPPES data Hospice and Palliative Medicine (Internal Medicine) Physician NPI 1043831795 DO
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Sunaina Dias, DO

Hospice and Palliative Medicine (Internal Medicine) Physician in Norwalk, Connecticut. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,524 in Hospice and Palliative Medicine (Internal Medicine) 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
168
Medicare Part D claims · 64 beneficiaries · Hospice and Palliative Medicine (Internal Medicine) Physician avg: 1K
Industry payments
$118.51
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Sunaina Dias, DO filed 168 Medicare Part D claims in 2023 as a Hospice and Palliative Medicine (Internal Medicine) Physician in Norwalk, Connecticut.

168
Part D claims, 2023
Likely
board-certified (heuristic)

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.

Sunaina Dias, DO's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

168 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 certification likely (heuristic, not verified)

Sunaina Dias, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Sunaina Dias, DO?

Quality data not reported

NPI registry status

Active

Issued 05/05/2020

NPI 1043831795

Primary specialty

Hospice and Palliative Medicine (Internal Medicine) Physician

Niche

1,524 US NPIs in this specialty

Medicare Part D claims

168 87% vs specialty avg

2023 prescription claims

Specialty avg: 1,275

Specialty distribution in Connecticut

How Hospice and Palliative Medicine (Internal Medicine) Physician compares to other specialties among Connecticut providers

Connecticut providers
Clinical Social Worker - 8.4%Clinical Social Worker8.4%Student in an Organized Health Care Education/Training Program - 7.7%Student in an Organized Health Care Education/Training Program7.7%Physical Therapist - 4.2%Physical Therapist4.2%Pharmacist - 3.9%Pharmacist3.9%Internal Medicine Physician - 3.4%Internal Medicine Physician3.4%Mental Health Counselor - 3.2%Mental Health Counselor3.2%Hospice and Palliative Medicine (Internal Medicine) Physician - 0%Hospice and Palliative Medicine (Internal Medicine) Physician0%
Largest specialties in Connecticut (% of in-state 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 Hospice and Palliative Medicine (Internal Medicine) Physician. Verify directly:

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).

Sunaina Dias, DO appears in the CMS NPPES registry as a Hospice and Palliative Medicine (Internal Medicine) Physician provider holding DO credentials at 34 MAPLE ST, Norwalk, CT, 06850, with a listed phone of (203) 852-2000. NPI 1043831795 was issued on 05/05/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Dias 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 168 prescription claims written by this provider, covering 64 Medicare beneficiaries and totaling roughly $14K in drug spend. 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.

Hospice and Palliative Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 1,524 enrolled providers across 51 states and an average of 1,275 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

34 MAPLE ST
Norwalk, CT 06850

Provider Details

NPI 1043831795
Specialty Hospice and Palliative Medicine (Internal Medicine) Physician
Credentials DO
Gender Female
NPI Issued 05/05/2020

Hospital and facility affiliations

Facilities where Sunaina Dias, DO 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.

Nuvance Health Medical Practice CT Inc
Norwalk, 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 Sunaina Dias, DO. Source: openpaymentsdata.cms.gov.

Total received

$119

Largest payer

Braeburn 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

168
Total Claims
$14K
Total Drug Cost
64
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
352
Total Day Supply
9,794
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
71.5 years
Avg HCC Risk Score
1.23
Gender Split
52% female / 48% 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
Losartan Potassium
14

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

Hospice and Palliative Medicine (Internal Medicine) Physician Overview

How Sunaina Dias, DO fits within the Hospice and Palliative Medicine (Internal Medicine) Physician landscape nationally.

1,524
Hospice and Palliative Medicine (Internal Medicine) Physician Providers in US
51
States with Hospice and Palliative Medicine (Internal Medicine) Physician
1,275
Avg Claims per Provider

Sunaina Dias, DO's 168 claims are below the specialty average of 1,275.

Nearby Hospice and Palliative Medicine (Internal Medicine) Physician Providers in Connecticut

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

Compare Hospice and Palliative Medicine (Internal Medicine) 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hospice and Palliative Medicine (Internal Medicine) 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.

Frequently Asked Questions

What is Sunaina Dias, DO's specialty?
Sunaina Dias, DO specializes in Hospice and Palliative Medicine (Internal Medicine) Physician and practices in Norwalk, Connecticut. Credentials: DO.
How much does Sunaina Dias, DO prescribe under Medicare Part D?
In 2023, Sunaina Dias, DO wrote 168 Medicare Part D claims totaling $14K in drug costs for 64 beneficiaries.
Where is Sunaina Dias, DO located?
Sunaina Dias, DO is located at 34 MAPLE ST, Norwalk, CT, 06850. Phone: (203) 852-2000.
What is Sunaina Dias, DO's NPI number?
Sunaina Dias, DO's National Provider Identifier (NPI) is 1043831795, issued on 05/05/2020.
How many Hospice and Palliative Medicine (Internal Medicine) Physician providers are there in the US?
There are 1,524 Hospice and Palliative Medicine (Internal Medicine) Physician providers across 51 states in the US. The average Hospice and Palliative Medicine (Internal Medicine) Physician provider writes 1,275 Medicare Part D claims per year.
What drugs does Sunaina Dias, DO prescribe most often?
Based on 2023 Medicare Part D data, Sunaina Dias, DO's most frequently prescribed drugs include Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sunaina Dias, DO accept Medicare?
Sunaina Dias, DO appears in CMS Medicare data with 168 Part D claims and 64 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sunaina Dias, DO's credentials?
Sunaina Dias, DO's NPI is 1043831795 with credentials DO. 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

Compiled from official public sources by the PlainDoctor editorial team.