NPI registry status
Active
2026 NPPES data Clinical Social Worker NPI 1811869647 LCSW
Verify on CMS → James Nagai, LCSW
Clinical Social Worker in Arlington Heights, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 274,526 in Clinical Social Worker, 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.
What the federal data shows
James Nagai, LCSW is a Clinical Social Worker in Arlington Heights, Illinois, listed in the federal CMS National Provider Identifier registry.
- #1
- Clinical Social Worker rank among Illinois specialties
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.
Federal trust snapshot
What official records show about James Nagai, LCSW
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1811869647), first enumerated 09/22/2025.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not James Nagai, LCSW's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1811869647 · Clinical Social Worker
NPI-10 · ENUM-NEW · TAX-MEGA · RX-NONE · BOOK-MID · PHOTO-ENUM
- NPI-10 1811869647
- ENUM-NEW 2025
- TAX-MEGA 275K Clinical Social
- RX-NONE No Part D
- BOOK-MID 12,186 in Illinois
- PHOTO-ENUM Sarah Deason · 2025
What does the federal data show about James Nagai, LCSW?
Quality data not reportedPrimary specialty
Clinical Social Worker
Specialty distribution in Illinois
How Clinical Social Worker compares to other specialties among Illinois 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 Clinical Social Worker. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1811869647 |
|---|---|
| Specialty | Clinical Social Worker |
| Credentials | LCSW |
| Gender | Male |
| NPI Issued | 09/22/2025 |
Hospital and facility affiliations
Facilities where James Nagai, 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.
Clarity Clinic Arlington Heights LLC
Arlington Heights, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to James Nagai, LCSW. To verify James Nagai, LCSW's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Clinical Social Worker Overview
How James Nagai, LCSW fits within the Clinical Social Worker landscape nationally.
274,526
Clinical Social Worker Providers in US
56
States with Clinical Social Worker
716
Avg Claims per Provider
Nationwide Clinical Social Worker peers with similar MIPS or enrollment year
Two federal-record peer sets for Nagai, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2025)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Clinical Social Worker Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Nagai.
One of 12,186 Clinical Social Worker providers enrolled in Illinois, 5 are shown here.
Dr. Leah A' Hearn
LCSW
Savoy, IL
Bruce Aaron
Chicago, IL
Dr. Marcus Abate
MSW
Aurora, IL
Dr. Nadia Abbas
LCSW
Chicago, IL
Dr. Hira Abbasi
MSW
Northbrook, IL
Compare Clinical Social Worker nationally: see state-by-state distribution →
Frequently Asked Questions
What is James Nagai, LCSW's specialty? ▼
James Nagai, LCSW specializes in Clinical Social Worker and practices in Arlington Heights, Illinois. Credentials: LCSW.
Where is James Nagai, LCSW located? ▼
James Nagai, LCSW is located at 2101 S ARLINGTON HEIGHTS RD, Arlington Heights, IL, 60005. Phone: (847) 666-5339.
What is James Nagai, LCSW's NPI number? ▼
James Nagai, LCSW's National Provider Identifier (NPI) is 1811869647, issued on 09/22/2025.
How many Clinical Social Worker providers are there in the US? ▼
There are 274,526 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 James Nagai, LCSW accept Medicare? ▼
James Nagai, LCSW appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Nagai, LCSW's credentials? ▼
James Nagai, LCSW's NPI is 1811869647 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.