2026 NPPES data Clinical Social Worker NPI 1396415048 LCSW
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NATHANIEL AUYEUNG, LCSW

Clinical Social Worker in WEST HAVEN, 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.

What the federal data shows

NATHANIEL AUYEUNG, LCSW is a Clinical Social Worker in WEST HAVEN, Connecticut, listed in the federal CMS National Provider Identifier registry.

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.

What does the federal data show about NATHANIEL AUYEUNG, LCSW?

Quality data not reported

NPI registry status

Active

Issued 09/15/2021

NPI 1396415048

Primary specialty

Clinical Social Worker

High-volume

272,898 US NPIs in this specialty

Specialty distribution in Connecticut

How Clinical Social Worker compares to other specialties among Connecticut providers

Connecticut providers

Clinical Social Worker share within Connecticut

1. Clinical Social Worker42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Social Worker share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Social Worker (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Social Worker ABMS/AOA estimate

Est. board-certified rate (Clinical Social Worker) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Social Worker) — 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).

NATHANIEL AUYEUNG, LCSW is a Clinical Social Worker provider practicing in WEST HAVEN, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: LCSW. NPI: 1396415048. 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.

NATHANIEL AUYEUNG, LCSW appears in the CMS NPPES registry as a Clinical Social Worker provider holding LCSW credentials at 285 MAIN ST, WEST HAVEN, CT, 06516, with a listed phone of (860) 803-0188. NPI 1396415048 was issued on 09/15/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AUYEUNG 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Clinical Social Worker providers operate outside Part D entirely.

Clinical Social Worker is a high-volume specialty nationwide, with 272,898 enrolled providers across 56 states and an average of 716 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

285 MAIN ST
WEST HAVEN, CT 06516

Provider Details

NPI 1396415048
Specialty Clinical Social Worker
Credentials LCSW
Gender Male
NPI Issued 09/15/2021

Hospital and facility affiliations

Facilities where NATHANIEL AUYEUNG, LCSW 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.

CORNELL SCOTT HILL HEALTH CORPORATION
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).

Clinical Social Worker Overview

How NATHANIEL AUYEUNG, LCSW fits within the Clinical Social Worker landscape nationally.

272,898
Clinical Social Worker Providers in US
56
States with Clinical Social Worker
716
Avg Claims per Provider

Nearby Clinical Social Worker Providers in Connecticut

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

Compare Clinical Social Worker nationally: see state-by-state distribution →

Frequently Asked Questions

What is NATHANIEL AUYEUNG, LCSW's specialty?
NATHANIEL AUYEUNG, LCSW specializes in Clinical Social Worker and practices in WEST HAVEN, Connecticut. Credentials: LCSW.
Where is NATHANIEL AUYEUNG, LCSW located?
NATHANIEL AUYEUNG, LCSW is located at 285 MAIN ST, WEST HAVEN, CT, 06516. Phone: (860) 803-0188.
What is NATHANIEL AUYEUNG, LCSW's NPI number?
NATHANIEL AUYEUNG, LCSW's National Provider Identifier (NPI) is 1396415048, issued on 09/15/2021.
How many Clinical Social Worker providers are there in the US?
There are 272,898 Clinical Social Worker providers across 56 states in the US. The average Clinical Social Worker provider writes 716 Medicare Part D claims per year.
Does NATHANIEL AUYEUNG, LCSW accept Medicare?
NATHANIEL AUYEUNG, LCSW appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NATHANIEL AUYEUNG, LCSW's credentials?
NATHANIEL AUYEUNG, LCSW's NPI is 1396415048 with credentials LCSW. 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.
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