ENDOCRINOLOGY OF FAIRFIELD COUNTY, LLC
NPI 1841652641
Internal Medicine - Endocrinology, Diabetes & Metabolism in Fairfield, CT

Q: What is Endocrinology Of Fairfield County, LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since March 22, 2016CLIA 07D2113071 · Waiver

134 ROUND HILL RD, FAIRFIELD, CT 06824(203) 872-4560 Get Directions Write a Review

NPPES record last updated: April 1, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 1, 2016, Mar 22, 2016 (2 updates tracked since 2016).

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About Endocrinology Of Fairfield County, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ENDOCRINOLOGY OF FAIRFIELD COUNTY, LLC (NPI 1841652641) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Fairfield, Connecticut and active in the NPI registry since March 2016. The organization holds a CLIA Waiver certificate valid through May 15, 2028 and lists Michael Duben, Owner, as its authorized official.

NPPES Registry Identity

NPI1841652641

Entity TypeOrganization

Primary Taxonomy207RE0101X

Legal Business NameENDOCRINOLOGY OF FAIRFIELD COUNTY, LLC

Location Address134 ROUND HILL RDFairfield, CT 06824-5166

Mailing Address346 Stanwich RdGreenwich, CT 06830-3530 · (203) 872-4560

Phone(203) 872-4560

Organization SubpartNo

Authorized OfficialMichael DubenOwner · (203) 872-4560

Enumeration DateMarch 22, 2016

Last NPPES UpdateApril 1, 20162 updates tracked since enumeration

✔ NPI 1841652641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

134 ROUND HILL RD, Fairfield, CT 06824

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Endocrinology Of Fairfield County, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Endocrinology Of Fairfield County, LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Michael Duben, M.D.

Endocrinology

NPI 1972523959

501 KINGS HWY E STE 103
Fairfield, CT 06825

(203) 872-4560

✔ PECOS✔ Accepts Medicare2.1 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 07D2113071

Endocrinology Of Fairfield County, LLC · Fairfield, CT

Active · expires May 15, 2028

CLIA Number07D2113071

Laboratory TypePhysician Office

Certificate Effective DateMay 16, 2026

Certificate Expiration DateMay 15, 2028

Laboratory DirectorMichael Duben

Laboratory Phone(203) 872-4560

Laboratory LocationEndocrinology Of Fairfield County, LLC501 Kings Hwy East, Suite 103, Fairfield, CT 06825

CLIA data matches this NPI record on: Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Endocrinology Of Fairfield County, LLC's NPI number?

The NPI number for Endocrinology Of Fairfield County, LLC is 1841652641. It was assigned to this organization in the NPPES registry on March 22, 2016.

Where is Endocrinology Of Fairfield County, LLC located?

Endocrinology Of Fairfield County, LLC is located at 134 Round Hill Rd, Fairfield, CT 06824. The listed phone number is (203) 872-4560.

What is Endocrinology Of Fairfield County, LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Endocrinology Of Fairfield County, LLC enrolled in Medicare?

Yes. Endocrinology Of Fairfield County, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Endocrinology Of Fairfield County, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Endocrinology Of Fairfield County, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Endocrinology Of Fairfield County, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 07D2113071) is associated with this NPI, valid through May 15, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Endocrinology Of Fairfield County, LLC was last updated on April 1, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.