2026 NPPES data Psychiatric/Mental Health Registered Nurse NPI 1326765538
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MARVIA MCDONALD-DIAS

Psychiatric/Mental Health Registered Nurse in WATERBURY, 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
178
Medicare Part D claims · 56 beneficiaries · Psychiatric/Mental Health Registered Nurse avg: 893
What the federal data reveals: MARVIA MCDONALD-DIAS is a Psychiatric/Mental Health Registered Nurse ([object Object]) practicing in WATERBURY, Connecticut with a Medicare Part D prescribing footprint of 178 claims across 56 beneficiaries .

What stands out: MARVIA MCDONALD-DIAS filed 178 Medicare Part D claims in 2023 across WATERBURY, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

MARVIA MCDONALD-DIAS at a glance

Quality data not reported

NPI registry status

Active

Issued 10/27/2022

NPI 1326765538

Primary specialty

Psychiatric/Mental Health Registered Nurse

Mid-sized

11,711 US NPIs in this specialty

Medicare Part D claims

178 80% vs specialty avg

2023 prescription claims

Specialty avg: 893

Specialty distribution in Connecticut

How Psychiatric/Mental Health Registered Nurse compares to other specialties among Connecticut providers

Connecticut providers

Psychiatric/Mental Health Registered Nurse share within Connecticut

1. Psychiatric/Mental Health Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric/Mental Health Registered Nurse share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatric/Mental Health Registered Nurse (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatric/Mental Health Registered Nurse ABMS/AOA estimate

Est. board-certified rate (Psychiatric/Mental Health Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatric/Mental Health Registered Nurse) — 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).

MARVIA MCDONALD-DIAS is a Psychiatric/Mental Health Registered Nurse provider practicing in WATERBURY, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1326765538. 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.

MARVIA MCDONALD-DIAS appears in the CMS NPPES registry as a Psychiatric/Mental Health Registered Nurse provider at 211 SCHRAFFTS DR LOWR LEVEL, WATERBURY, CT, 06705, with a listed phone of (203) 518-8218. NPI 1326765538 was issued on 10/27/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCDONALD-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 178 prescription claims written by this provider, covering 56 Medicare beneficiaries and totaling roughly $12K 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.

Psychiatric/Mental Health Registered Nurse is a mid-sized specialty nationwide, with 11,711 enrolled providers across 54 states and an average of 893 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

211 SCHRAFFTS DR LOWR LEVEL
WATERBURY, CT 06705

Provider Details

NPI 1326765538
Specialty Psychiatric/Mental Health Registered Nurse
Gender Female
NPI Issued 10/27/2022

Medicare Part D Prescribing Data

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

178
Total Claims
$12K
Total Drug Cost
56
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
219
Total Day Supply
5,366
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
2.20
Gender Split
57% female / 43% 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
Trazodone Hcl
35
Clonazepam
15
Duloxetine Hcl
15
Quetiapine Fumarate
12
Buspirone Hcl
11

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

Psychiatric/Mental Health Registered Nurse Overview

How MARVIA MCDONALD-DIAS fits within the Psychiatric/Mental Health Registered Nurse landscape nationally.

11,711
Psychiatric/Mental Health Registered Nurse Providers in US
54
States with Psychiatric/Mental Health Registered Nurse
893
Avg Claims per Provider

MARVIA MCDONALD-DIAS's 178 claims are below the specialty average of 893.

Nearby Psychiatric/Mental Health Registered Nurse Providers in Connecticut

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

Compare Psychiatric/Mental Health Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARVIA MCDONALD-DIAS's specialty?
MARVIA MCDONALD-DIAS specializes in Psychiatric/Mental Health Registered Nurse and practices in WATERBURY, Connecticut.
How much does MARVIA MCDONALD-DIAS prescribe under Medicare Part D?
In 2023, MARVIA MCDONALD-DIAS wrote 178 Medicare Part D claims totaling $12K in drug costs for 56 beneficiaries.
Where is MARVIA MCDONALD-DIAS located?
MARVIA MCDONALD-DIAS is located at 211 SCHRAFFTS DR LOWR LEVEL, WATERBURY, CT, 06705. Phone: (203) 518-8218.
What is MARVIA MCDONALD-DIAS's NPI number?
MARVIA MCDONALD-DIAS's National Provider Identifier (NPI) is 1326765538, issued on 10/27/2022.
How many Psychiatric/Mental Health Registered Nurse providers are there in the US?
There are 11,711 Psychiatric/Mental Health Registered Nurse providers across 54 states in the US. The average Psychiatric/Mental Health Registered Nurse provider writes 893 Medicare Part D claims per year.
What drugs does MARVIA MCDONALD-DIAS prescribe most often?
Based on 2023 Medicare Part D data, MARVIA MCDONALD-DIAS's most frequently prescribed drugs include Trazodone Hcl, Clonazepam, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARVIA MCDONALD-DIAS accept Medicare?
MARVIA MCDONALD-DIAS appears in CMS Medicare data with 178 Part D claims and 56 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARVIA MCDONALD-DIAS's credentials?
MARVIA MCDONALD-DIAS's NPI is 1326765538. 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