Nursing Homes · Castro Valley, CA
Nursing Homes · Medicare certified
St John Kronstadt Convalescent Center
4432 James Avenue · Castro Valley, CA 94546 · 49 certified beds
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About St John Kronstadt Convalescent Center
St John Kronstadt Convalescent Center is a nursing home in Castro Valley, California. Its capacity is 49 beds, below the Alameda County median of 83 for nursing homes. It is run by a nonprofit operator and is part of Serenity 4 Management Services LLC. It is Medicare certified. Its public inspection record shows 33 citations, the most recent on November 21, 2025. Enforcement records show no fine or payment denial against it. Nurse staffing averages 4.45 hours per resident per day. It is one of 5 nursing homes listed in Castro Valley. Residents and families can raise concerns with the Office of the State Long-Term Care Ombudsman at 1-800-231-4024. Its public records were last updated in October 2026.
Public record
CMS Care Compare, updated October 2026
Certification
Medicare-certified.
Ratings
Overall
5.0Staffing
5.0Quality measures
5.0CMS Care Compare, October 2026.
Inspection history (33)
Records from February 2023 to November 2025.
February 17, 2023
Tag F0760Ensure that residents are free from significant medication errors.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0880Provide and implement an infection prevention and control program.
Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0730Observe each nurse aide's job performance and give regular training.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0802Provide sufficient support personnel to safely and effectively carry out the functions of the food and nutrition service.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected May 17, 2023.
February 17, 2023
Tag F0805Ensure each resident receives and the facility provides food prepared in a form designed to meet individual needs.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected May 17, 2023.
February 17, 2023
Tag F0882Designate a qualified infection preventionist to be responsible for the infection prevent and control program in the nursing home.
Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0908Keep all essential equipment working safely.
Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0804Ensure food and drink is palatable, attractive, and at a safe and appetizing temperature.
Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected May 17, 2023.
February 17, 2023
Tag F0558Reasonably accommodate the needs and preferences of each resident.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0803Ensure menus must meet the nutritional needs of residents, be prepared in advance, be followed, be updated, be reviewed by dietician, and meet the needs of the resident.
Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected May 17, 2023.
February 17, 2023
Tag F0759Ensure medication error rates are not 5 percent or greater.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
February 17, 2023
Tag F0812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected May 17, 2023.
February 17, 2023
Tag F0912Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected March 24, 2023.
Penalties
CMS lists no fines or payment denials for this nursing home in the last three years.
Staffing
4.45 nurse hours per resident per day in Q2 2026, up from 4.26 in Q4 2025.
From the payroll records nursing homes file with CMS.
Ownership
Non profit
- Parent company: Serenity 4 Management Services LLC
Typical cost
CareScout Cost of Care Survey, 2025
This provider's prices aren't public. Here is what the same care typically costs in California.
Nearby alternatives
Other licensed providers in Castro Valley.
Nursing Homes · Castro Valley, CA
Canyon Creek Post-Acute
Nursing Homes · Castro Valley, CA
East Bay Post-Acute
Deciding between options? Nursing Homes Guide: Skilled Nursing & Long-Term Care
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