CLIA lab
CLIA 50D2080359: John R Knudsen MD
Ferndale, WA. Certificate and address details from the CMS Provider of Services file for clinical laboratories.
CLIA number 50D2080359 belongs to John R Knudsen MD in Ferndale, WA.
Certificate of Waiver, effective July 3, 2014, expires April 4, 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
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Certificate
- Certificate type
- Certificate of Waiver
- Certificate effective
- July 3, 2014
- Certificate expiration
- April 4, 2028
- Status in the CMS file
- Active (termination code 00)
- Original participation date
- July 3, 2014
- Facility type
- Physician office
- Ownership (control type)
- Proprietary
- Lab classification
- CLIA exempt laboratory
Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page
Lab and contact
- CLIA number
- 50D2080359
- Lab name
- John R Knudsen MD
- Address
- 6046 Portal Way Ste 103, Ferndale, WA 98248
- Phone
- (360) 483-5260
- Fax
- (360) 483-5264
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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Related
Questions
What is the CLIA number for John R Knudsen MD in Ferndale?
50D2080359, per the CMS Provider of Services file posted October 16, 2026.
What CLIA certificate does John R Knudsen MD hold?
A Certificate of Waiver, according to the CMS file.
When does CLIA 50D2080359 expire?
The CMS file lists April 4, 2028 as the certificate expiration date; the certificate took effect July 3, 2014.