CLIA lab

CLIA 21D0220145: Garrett Medical Group

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

CLIA number 21D0220145 belongs to Garrett Medical Group in Oakland, MD.

Certificate for Provider-Performed Microscopy Procedures, effective April 1, 2026, expires March 31, 2028.

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

Run it in Rivvi

Map your lab's test names to LOINC codes

Open in Rivvi

Free to start. Opens Rivvi, the AI workspace for healthcare teams.

Certificate

Certificate type
Certificate for Provider-Performed Microscopy Procedures
Certificate effective
April 1, 2026
Certificate expiration
March 31, 2028
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
21D0220145
Lab name
Garrett Medical Group
Address
311 North 4th Street, Oakland, MD 21550
Phone
(301) 334-8171
Fax
(301) 334-1807

Annual test volume the lab reported

Waived tests
1,000
Provider-performed microscopy tests
100
Total
1,100

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

Other labs in Oakland, MD

Related

Questions

What is the CLIA number for Garrett Medical Group in Oakland?

21D0220145, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does Garrett Medical Group hold?

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

When does CLIA 21D0220145 expire?

The CMS file lists March 31, 2028 as the certificate expiration date; the certificate took effect April 1, 2026.

Try it on your own data today.

Free to start. Most teams are using it the same day.