CLIA lab

CLIA 33D2017699: David Michael Horowitz, MD PC

Smithtown, NY. Certificate and address details from the CMS Provider of Services file for clinical laboratories.

CLIA number 33D2017699 belongs to David Michael Horowitz, MD PC in Smithtown, NY.

Certificate of Waiver, effective December 16, 2024, expires December 15, 2026.

Active in the CMS Provider of Services file posted October 16, 2026.

Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page

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Certificate

Certificate type
Certificate of Waiver
Certificate effective
December 16, 2024
Certificate expiration
December 15, 2026
Status in the CMS file
Active (termination code 00)
Original participation date
December 16, 2010
Facility type
Physician office
Ownership (control type)
Proprietary
Lab classification
CLIA laboratory

Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page

Lab and contact

CLIA number
33D2017699
Lab name
David Michael Horowitz, MD PC
Address
2 Brooksite Drive Suite 210, Smithtown, NY 11787
Phone
(631) 780-3900
Fax
(631) 780-6899

Annual test volume the lab reported

Waived tests
490

Volumes are what the lab reported to CMS on its CMS-116 application, as carried in the file.

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Questions

What is the CLIA number for David Michael Horowitz, MD PC in Smithtown?

33D2017699, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does David Michael Horowitz, MD PC hold?

A Certificate of Waiver, according to the CMS file.

When does CLIA 33D2017699 expire?

The CMS file lists December 15, 2026 as the certificate expiration date; the certificate took effect December 16, 2024.

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