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 75 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.
November 21, 2025
Tag F0658Ensure services provided by the nursing facility meet professional standards of quality.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0912Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Severity B: pattern, no actual harm, potential for minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0677Provide care and assistance to perform activities of daily living for any resident who is unable.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0656Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0644Coordinate assessments with the pre-admission screening and resident review program; and referring for services as needed.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0880Provide and implement an infection prevention and control program.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0732Post nurse staffing information every day.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0761Ensure drugs and biologicals used in the facility are labeled in accordance with currently accepted professional principles; and all drugs and biologicals must be stored in locked compartments, separately locked, compartments for controlled drugs.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0883Develop and implement policies and procedures for flu and pneumonia vaccinations.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
November 21, 2025
Tag F0756Ensure a licensed pharmacist perform a monthly drug regimen review, including the medical chart, following irregularity reporting guidelines in developed policies and procedures.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected December 21, 2025.
April 16, 2025
Tag F0609Timely report suspected abuse, neglect, or theft and report the results of the investigation to proper authorities.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected May 27, 2025.
December 10, 2024
Tag F0689Ensure that a nursing home area is free from accident hazards and provides adequate supervision to prevent accidents.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected January 15, 2025.
June 7, 2024
Tag F0761Ensure drugs and biologicals used in the facility are labeled in accordance with currently accepted professional principles; and all drugs and biologicals must be stored in locked compartments, separately locked, compartments for controlled drugs.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected July 4, 2024.
June 7, 2024
Tag F0550Honor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected July 4, 2024.
June 7, 2024
Tag F0677Provide care and assistance to perform activities of daily living for any resident who is unable.
Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected July 4, 2024.
June 7, 2024
Tag F0912Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Severity B: pattern, no actual harm, potential for minimal harm. Corrected July 4, 2024.
June 7, 2024
Tag F0755Provide pharmaceutical services to meet the needs of each resident and employ or obtain the services of a licensed pharmacist.
Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected July 4, 2024.
February 17, 2023
Tag F0801Employ sufficient staff with the appropriate competencies and skills sets to carry out the functions of the food and nutrition service, including a qualified dietician.
Severity K: pattern, immediate jeopardy. Corrected March 24, 2023.
February 17, 2023
Tag F0550Honor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.
Severity E: pattern, 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
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East Bay Post-Acute
Deciding between options? Nursing Homes Guide: Skilled Nursing & Long-Term Care
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