St John Kronstadt Convalescent Center
4432 James Avenue, Castro Valley, CA 94546
St John Kronstadt Convalescent Center, a 49-bed non profit - corporation nursing facility in Castro Valley, CA, holds a 5-star CMS overall rating - well above the 3.0-star national average, ranking #45 of 1,154 rated homes in CA on CMS overall stars (with health+staffing+quality tie-breaks), with nurse staffing above the national norm. 1 inspection finding reached the actual-harm or immediate-jeopardy level.
CMS combines health inspections, nurse-staffing levels, and clinical quality measures into the overall star rating, read the components below; they often tell a sharper story than the headline.
Phone: 5108897000
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- 5 / 5
- Much above average · CMS overall · nat'l 3.0
- #45 of 1,154
- In-state rank among rated CA homes
- 4.22
- Above average · nurse hrs/day · nat'l 3.86
- 33
- Inspection findings · 1 serious
If a nursing-home resident is in immediate danger, call 911.
For elder abuse or neglect concerns, contact your state's Adult Protective Services (search "APS" + your state) or call the Eldercare Locator at 1-800-677-1116. For facility advocacy, reach your Long-Term Care Ombudsman. CMS ratings and inspection data below are a research screen, not an emergency channel.
The verdict
St John Kronstadt Convalescent Center, a 49-bed non profit - corporation nursing facility in Castro Valley, CA, holds a 5-star CMS overall rating - well above the 3.0-star national average, ranking #45 of 1,154 rated homes in CA on CMS overall stars (with health+staffing+quality tie-breaks), with nurse staffing above the national norm. 1 inspection finding reached the actual-harm or immediate-jeopardy level.
- 5 / 5
- CMS overall · national 3.0
- #45 of 1,154
- In-state rank among rated CA homes
- 4.22
- Nurse hrs/resident-day · national 3.86
- 33
- Inspection findings · 1 serious
CMS force-curves overall stars within each state; read health, staffing, and quality sub-ratings alongside the headline.
In-state ownership mix · peer inventory
How 1,165 CA nursing homes split by ownership sector
This facility is recorded as Non profit - Corporation. Sector buckets collapse CMS ownership_type into For-profit, Nonprofit, and Government, orthogonal to the RN/LPN/CNA hour bar below.
Health Inspection
Staffing
Quality Measures
Long-Stay Quality
Facility Information
- Provider Number
- 555016
- Ownership
- Non profit - Corporation
- Provider Type
- Medicare and Medicaid
- Beds
- 49
- Residents
- 43
- In Hospital
- No
- County
- Alameda
- Last Inspection
- Nov 21, 2025
Staffing Data
How the 4.22 total nursing hours per resident-day are staffed:
- RN Hours
- 0.69 (nat'l avg: 0.69)
- LPN Hours
- 0.86
- CNA Hours
- 2.67
- Total Nursing Hours
- 4.22 (nat'l avg: 3.86)
- PT Hours
- 0.10
- Nursing Turnover
- 12.2%
- RN Turnover
- 16.7%
What the CMS Record Reveals About St John Kronstadt Convalescent Center
According to CMS Nursing Home Compare, St John Kronstadt Convalescent Center ranks #45 of 1,154 rated nursing homes in CA on overall stars (tie-broken by health+staffing+quality, then fewer fines). St John Kronstadt Convalescent Center operates 49 certified beds in Castro Valley, CA with approximately 43 residents currently in care, and carries a CMS overall rating of 5 out of 5 stars (health inspection 4★ · staffing 5★ · quality 5★).
The inspection file contains 33 deficiency records from recent surveys, of which 1 reached the actual-harm or immediate-jeopardy threshold on the CMS scope-and-severity grid. This provider's enforcement record shows no fines or payment denials to date. Reported nurse staffing runs 4.22 total hours per resident day (national average 3.86); RN hours specifically are 0.69 per resident day.
Classified as "Non profit - Corporation" ownership and operating as a "Medicare and Medicaid" provider, St John Kronstadt Convalescent Center falls into a category where comparative context matters. Reported nursing staff turnover at this facility is 12.2% (CMS payroll-based measure).
Why sub-scores and the CMS methodology matter
The overall score is a composite of three weighted sub-ratings published by the Centers for Medicare & Medicaid Services: health inspection results, staffing levels, and quality measures. Because CMS caps the overall score at the health-inspection tier and then adjusts up or down based on staffing and quality, the sub-scores often tell a sharper story than the headline star count alone, a 3-star facility with weak inspection history reads differently from one held back by thin staffing.
National research consistently shows that ownership structure, staffing hours, and turnover are the three operational levers that correlate most strongly with resident outcomes, ratings and fines are lagging indicators of those upstream choices. The staffing metric in particular is the one most strongly tied to resident outcomes in peer-reviewed literature.
For families evaluating this facility, the CMS record should be read alongside a site visit, direct conversation with current residents and their families, and review of the state health department's most recent inspection report, the star rating is a starting point, not a verdict. All data on this page is sourced from CMS Provider Data and the Nursing Home Compare program; always verify the same record on Medicare.gov Care Compare and with the facility or your state survey agency before making placement decisions.
Deficiency History (33 most recent)
Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Category: Environmental Deficiencies
Corrected: Dec 21, 2025
Develop and implement policies and procedures for flu and pneumonia vaccinations.
Category: Infection Control Deficiencies
Corrected: Dec 21, 2025
Provide and implement an infection prevention and control program.
Category: Infection Control Deficiencies
Corrected: Dec 21, 2025
Post nurse staffing information every day.
Category: Nursing and Physician Services Deficiencies
Corrected: Dec 21, 2025
Provide care and assistance to perform activities of daily living for any resident who is unable.
Category: Quality of Life and Care Deficiencies
Corrected: Dec 21, 2025
Ensure services provided by the nursing facility meet professional standards of quality.
Category: Resident Assessment and Care Planning Deficiencies
Corrected: Dec 21, 2025
Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.
Category: Resident Assessment and Care Planning Deficiencies
Corrected: Dec 21, 2025
Coordinate assessments with the pre-admission screening and resident review program; and referring for services as needed.
Category: Resident Assessment and Care Planning Deficiencies
Corrected: Dec 21, 2025
Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
Category: Nutrition and Dietary Deficiencies
Corrected: Dec 21, 2025
Ensure 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.
Category: Pharmacy Service Deficiencies
Corrected: Dec 21, 2025
Ensure a licensed pharmacist perform a monthly drug regimen review, including the medical chart, following irregularity reporting guidelines in developed policies and procedures.
Category: Pharmacy Service Deficiencies
Corrected: Dec 21, 2025
Timely report suspected abuse, neglect, or theft and report the results of the investigation to proper authorities.
Category: Freedom from Abuse, Neglect, and Exploitation Deficiencies
Corrected: May 27, 2025
Ensure that a nursing home area is free from accident hazards and provides adequate supervision to prevent accidents.
Category: Quality of Life and Care Deficiencies
Corrected: Jan 15, 2025
Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Category: Environmental Deficiencies
Corrected: Jul 4, 2024
Provide pharmaceutical services to meet the needs of each resident and employ or obtain the services of a licensed pharmacist.
Category: Pharmacy Service Deficiencies
Corrected: Jul 4, 2024
Ensure 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.
Category: Pharmacy Service Deficiencies
Corrected: Jul 4, 2024
Provide care and assistance to perform activities of daily living for any resident who is unable.
Category: Quality of Life and Care Deficiencies
Corrected: Jul 4, 2024
Honor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.
Category: Resident Rights Deficiencies
Corrected: Jul 4, 2024
Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Category: Environmental Deficiencies
Corrected: Mar 24, 2023
Ensure each resident receives and the facility provides food prepared in a form designed to meet individual needs.
Category: Nutrition and Dietary Deficiencies
Corrected: May 17, 2023
Provide sufficient support personnel to safely and effectively carry out the functions of the food and nutrition service.
Category: Nutrition and Dietary Deficiencies
Corrected: May 17, 2023
Ensure that residents are free from significant medication errors.
Category: Pharmacy Service Deficiencies
Corrected: Mar 24, 2023
Ensure medication error rates are not 5 percent or greater.
Category: Pharmacy Service Deficiencies
Corrected: Mar 24, 2023
Observe each nurse aide's job performance and give regular training.
Category: Nursing and Physician Services Deficiencies
Corrected: Mar 24, 2023
Reasonably accommodate the needs and preferences of each resident.
Category: Resident Rights Deficiencies
Corrected: Mar 24, 2023
Honor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.
Category: Resident Rights Deficiencies
Corrected: Mar 24, 2023
Keep all essential equipment working safely.
Category: Environmental Deficiencies
Corrected: Mar 24, 2023
Designate a qualified infection preventionist to be responsible for the infection prevent and control program in the nursing home.
Category: Infection Control Deficiencies
Corrected: Mar 24, 2023
Provide and implement an infection prevention and control program.
Category: Infection Control Deficiencies
Corrected: Mar 24, 2023
Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
Category: Nutrition and Dietary Deficiencies
Corrected: May 17, 2023
Ensure food and drink is palatable, attractive, and at a safe and appetizing temperature.
Category: Nutrition and Dietary Deficiencies
Corrected: May 17, 2023
Ensure 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.
Category: Nutrition and Dietary Deficiencies
Corrected: May 17, 2023
Employ sufficient staff with the appropriate competencies and skills sets to carry out the functions of the food and nutrition service, including a qualified dietician.
Category: Nutrition and Dietary Deficiencies
Corrected: Mar 24, 2023
Quality Measures
| Measure | Type | Score | Used in Rating |
|---|---|---|---|
| Percentage of long-stay residents whose need for help with daily activities has increased | Long Stay | 11.8% | Yes |
| Percentage of long-stay residents with a catheter inserted and left in their bladder | Long Stay | 0.0% | Yes |
| Percentage of long-stay residents with a urinary tract infection | Long Stay | 0.0% | Yes |
| Percentage of long-stay residents experiencing one or more falls with major injury | Long Stay | 4.2% | Yes |
| Percentage of long-stay residents whose ability to walk independently worsened | Long Stay | 19.5% | Yes |
| Percentage of long-stay residents with pressure ulcers | Long Stay | 0.7% | Yes |
| Percentage of long-stay residents who received an antipsychotic medication | Long Stay | 10.0% | Yes |
| Percentage of short-stay residents who newly received an antipsychotic medication | Short Stay | N/A | Yes |
| Percentage of long-stay residents who lose too much weight | Long Stay | 5.9% | No |
| Percentage of long-stay residents who have depressive symptoms | Long Stay | 0.0% | No |
| Percentage of long-stay residents who were physically restrained | Long Stay | 0.0% | No |
| Percentage of long-stay residents assessed and appropriately given the pneumococcal vaccine | Long Stay | 98.2% | No |
| Percentage of long-stay residents who received an antianxiety or hypnotic medication | Long Stay | 7.1% | No |
| Percentage of long-stay residents assessed and appropriately given the seasonal influenza vaccine | Long Stay | 100.0% | No |
| Percentage of long-stay residents with new or worsened bowel or bladder incontinence | Long Stay | 5.8% | No |
| Percentage of short-stay residents assessed and appropriately given the pneumococcal vaccine | Short Stay | 97.5% | No |
| Percentage of short-stay residents who were assessed and appropriately given the seasonal influenza vaccine | Short Stay | N/A | No |
Penalty History
No penalties on record.
Nationwide facilities with similar scale or staffing
Two data-derived peer sets for St John Kronstadt Convalescent Center, both outside CA so the neighborhoods are not the same-state geography list below.
Similar bed count
Nearest CMS certified bed counts outside CA (49 beds here).
Similar staffing hours
Nearest CMS adjusted total nurse hours per resident day outside CA (4.98 here).
Nearby Nursing Homes in CA
1,164 other nursing homes are on record in CA; 6 are shown here.
A Grace Sub Acute & Skilled Care
San Jose, CA
Acc Care Center
Sacramento, CA
Advanced Health Care of Sacramento
Sacramento, CA
Advanced Rehab Center of Tustin
Santa Ana, CA
Adventist Health Delano
Delano, CA
Adventist Health Sonora - D/P SNF
Sonora, CA
Understanding Nursing Home Data
What the CMS records show for St John Kronstadt Convalescent Center
The health, staffing, and quality sub-ratings above often diverge from the CMS overall headline. Use those components and the inspection findings to read the full file, not the overall star alone.
- The CA registry aggregates state averages and the highest-rated homes in this cohort. View CA registry
- Peer homes near 49 beds show how CMS stars vary at a similar scale in CA. Compare a similar-size peer
- CMS publishes separate fields for inspections, nurse staffing hours, and quality measures; the guide explains how each star is computed. How CMS ratings work
CMS refreshes Nursing Home Compare quarterly (current extract: August 2026). PlainNursing describes published records; it does not establish suitability, availability, admissions, or individual outcomes.
Frequently Asked Questions
What is the overall CMS rating for St John Kronstadt Convalescent Center?
Where does St John Kronstadt Convalescent Center rank among nursing homes in CA?
What are the staffing levels at St John Kronstadt Convalescent Center?
How many beds does St John Kronstadt Convalescent Center have?
Does St John Kronstadt Convalescent Center have any deficiencies on record?
Has St John Kronstadt Convalescent Center received any fines or penalties?
Who owns St John Kronstadt Convalescent Center?
When was St John Kronstadt Convalescent Center last inspected?
What quality measures are tracked for St John Kronstadt Convalescent Center?
Data Sources
Data source: CMS Nursing Home Compare. Ratings, staffing, deficiency, quality measure, and penalty data are from CMS Provider Data. For informational purposes only. Verify the same CCN on Medicare.gov Care Compare and with the facility or your state health department.
Read our methodology - how this data is sourced, computed, and verified.
