CLIA lab

CLIA 05D0709799: John T Armstrong JR MD Inc

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

CLIA number 05D0709799 belongs to John T Armstrong JR MD Inc in Napa, CA.

Certificate for Provider-Performed Microscopy Procedures, effective November 2, 2025, expires November 1, 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 for Provider-Performed Microscopy Procedures
Certificate effective
November 2, 2025
Certificate expiration
November 1, 2027
Status in the CMS file
Active (termination code 00)
Original participation date
September 1, 1992
Facility type
Physician office
Ownership (control type)
Private
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
05D0709799
Lab name
John T Armstrong JR MD Inc
Address
3434 Villa Lane Suite 360, Napa, CA 94558
Phone
(707) 257-4317

Annual test volume the lab reported

Waived tests
2,670

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

Other labs in Napa, CA

Related

Questions

What is the CLIA number for John T Armstrong JR MD Inc in Napa?

05D0709799, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does John T Armstrong JR MD Inc hold?

A Certificate for Provider-Performed Microscopy Procedures, according to the CMS file.

When does CLIA 05D0709799 expire?

The CMS file lists November 1, 2027 as the certificate expiration date; the certificate took effect November 2, 2025.

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