CLIA lab

CLIA 33D1012655: Mohamad Zahi Kassas MD

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

CLIA number 33D1012655 belongs to Mohamad Zahi Kassas MD in Wellsville, NY.

Certificate of Waiver, effective May 19, 2025, expires May 18, 2027.

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
May 19, 2025
Certificate expiration
May 18, 2027
Status in the CMS file
Active (termination code 00)
Original participation date
May 19, 2003
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
33D1012655
Lab name
Mohamad Zahi Kassas MD
Address
313 North Main Street, Wellsville, NY 14895
Phone
(585) 596-4105
Fax
(585) 596-4107

Annual test volume the lab reported

Waived tests
1,000

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 Mohamad Zahi Kassas MD in Wellsville?

33D1012655, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does Mohamad Zahi Kassas MD hold?

A Certificate of Waiver, according to the CMS file.

When does CLIA 33D1012655 expire?

The CMS file lists May 18, 2027 as the certificate expiration date; the certificate took effect May 19, 2025.

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