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IN-HOUSE MD, LLC.
NPI 1578990420
General Practice in Fairfield, CT

Active since October 07, 2013
400 MILL PLAIN RD, FAIRFIELD, CT 06824(203) 255-3573(203) 255-3575 Get Directions Write a Review

NPPES record last updated: October 7, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About In-house Md, Llc. NPPES

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

IN-HOUSE MD, LLC. (NPI 1578990420) is a healthcare organization registered as a general practice in Fairfield, Connecticut and active in the NPI registry since October 2013. The organization lists Carmen A Tortora, Manager, as its authorized official.

NPPES Registry Identity

NPI1578990420
Entity TypeOrganization
Primary Taxonomy208D00000X
Legal Business NameIN-HOUSE MD, LLC.
Location Address400 MILL PLAIN RDFairfield, CT 06824-5048
Mailing Address400 Mill Plain RdFairfield, CT 06824-5048 · (203) 255-3573 · Fax (203) 255-3575
Phone(203) 255-3573
Fax(203) 255-3575
Organization SubpartNo
Authorized OfficialCarmen A TortoraManager · (203) 255-3573
Enumeration DateOctober 7, 2013
✔ NPI 1578990420 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
400 MILL PLAIN RD, Fairfield, CT 06824
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

In-house Md, 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 In-House MD, LLC., which bills Medicare for the services this clinician delivers.

Clinician (1)

Stuart Miller, M.D.
General Practice
NPI 1801855101
999 SILVER LN 3RD FLOOR
Trumbull, CT 06611
(203) 380-5270
✔ PECOS8.1 mi

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

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 In-House MD, LLC.'s NPI number?

The NPI number for In-House MD, LLC. is 1578990420. It was assigned to this organization in the NPPES registry on October 7, 2013.

Where is In-House MD, LLC. located?

In-House MD, LLC. is located at 400 Mill Plain Rd, Fairfield, CT 06824. The listed phone number is (203) 255-3573.

What is In-House MD, LLC.'s specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is In-House MD, LLC. enrolled in Medicare?

Yes. In-House MD, LLC. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through In-House MD, LLC.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (General Practice) reassigns their Medicare billing to In-House MD, 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.

When was this NPI record last updated?

The NPPES record for In-House MD, LLC. was last updated on October 7, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.