CLIA lab
CLIA 05D0725937: ST John Kronstadt Convalescent Center
Castro Valley, CA. Certificate and address details from the CMS Provider of Services file for clinical laboratories.
CLIA number 05D0725937 belongs to ST John Kronstadt Convalescent Center in Castro Valley, CA.
Certificate of Waiver, effective September 1, 2026, expires August 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
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Certificate
- Certificate type
- Certificate of Waiver
- Certificate effective
- September 1, 2026
- Certificate expiration
- August 31, 2028
- Status in the CMS file
- Active (termination code 00)
- Original participation date
- June 20, 1994
- Facility type
- Skilled nursing or nursing facility
- 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
- 05D0725937
- Lab name
- ST John Kronstadt Convalescent Center
- Address
- 4432 James Avenue, Castro Valley, CA 94546
- Phone
- (510) 889-7000
Annual test volume the lab reported
- Waived tests
- 720
Volumes are what the lab reported to CMS on its CMS-116 application, as carried in the file.
Care facility at this address
- ST John Kronstadt Convalescent CenterCMS Care Compare ratings for the facility at the same street address
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Related
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- ST John Kronstadt Convalescent Center: CMS ratings
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- Hospices in Castro Valley, CA
- Dialysis Centers in Castro Valley, CA
- Hospitals in Castro Valley, CA
- NPI records in Castro Valley, CA
- CLIA lookup
Questions
What is the CLIA number for ST John Kronstadt Convalescent Center in Castro Valley?
05D0725937, per the CMS Provider of Services file posted October 16, 2026.
What CLIA certificate does ST John Kronstadt Convalescent Center hold?
A Certificate of Waiver, according to the CMS file.
When does CLIA 05D0725937 expire?
The CMS file lists August 31, 2028 as the certificate expiration date; the certificate took effect September 1, 2026.