NPI registry status
Active
2026 NPPES data Social Worker NPI 1861329872 LMSW
Verify on CMS → Cynthia Marroquin, LMSW
Social Worker in Stamford, 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 143,666 in 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
Cynthia Marroquin, LMSW is a Social Worker in Stamford, Connecticut, listed in the federal CMS National Provider Identifier registry.
- #8
- Social Worker rank among Connecticut 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 Cynthia Marroquin, LMSW
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 1861329872), first enumerated 05/05/2026.
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
- 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 1861329872 · Social Worker
NPI-10 · ENUM-NEW · TAX-MEGA · RX-NONE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1861329872
- ENUM-NEW 2026
- TAX-MEGA 144K Social Worker
- RX-NONE No Part D
- BOOK-LIGHT 2,339 in Connecticut
- PHOTO-ENUM Jesse Schaap · 2026
What does the federal data show about Cynthia Marroquin, LMSW?
Quality data not reportedPrimary specialty
Social Worker
Specialty distribution in Connecticut
How Social Worker compares to other specialties among Connecticut 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 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 | 1861329872 |
|---|---|
| Specialty | Social Worker |
| Credentials | LMSW |
| Gender | Female |
| NPI Issued | 05/05/2026 |
Social Worker Overview
How Cynthia Marroquin, LMSW fits within the Social Worker landscape nationally.
143,666
Social Worker Providers in US
54
States with Social Worker
1,570
Avg Claims per Provider
Nationwide Social Worker peers with similar MIPS or enrollment year
Two federal-record peer sets for Marroquin, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2026)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Social Worker Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Marroquin.
One of 2,339 Social Worker providers enrolled in Connecticut, 5 are shown here.
Cassandra Aamodt
New Britain, CT
Kimberly Abram
LCSW
Bozrah, CT
Hilda Acevedo
Manchester, CT
Victor Acevedo
Manchester, CT
Alyssa Ackerson
LMSW
Essex, CT
Compare Social Worker nationally: see state-by-state distribution →
Frequently Asked Questions
What is Cynthia Marroquin, LMSW's specialty? ▼
Cynthia Marroquin, LMSW specializes in Social Worker and practices in Stamford, Connecticut. Credentials: LMSW.
Where is Cynthia Marroquin, LMSW located? ▼
Cynthia Marroquin, LMSW is located at 411 HIGH RIDGE RD, Stamford, CT, 06905. Phone: (203) 977-5801.
What is Cynthia Marroquin, LMSW's NPI number? ▼
Cynthia Marroquin, LMSW's National Provider Identifier (NPI) is 1861329872, issued on 05/05/2026.
How many Social Worker providers are there in the US? ▼
There are 143,666 Social Worker providers across 54 states in the US. The average Social Worker provider writes 1,570 Medicare Part D claims per year.
Does Cynthia Marroquin, LMSW accept Medicare? ▼
Cynthia Marroquin, LMSW appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cynthia Marroquin, LMSW's credentials? ▼
Cynthia Marroquin, LMSW's NPI is 1861329872 with credentials LMSW. 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 August 2026 (NPPES) / 2024 (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 August 2026.