All states › California › Castro Valley › St John Kronstadt Convalescent Center
4432 James Avenue Castro Valley, CA 94546 · Alameda County
All 5 nursing homes in Castro Valley, CA (5 take Medicaid)
CMS certification number 555016 · See this home on Medicare Care Compare
Is St John Kronstadt Convalescent Center a good nursing home? Reviews, ratings and inspection record
There are no official resident reviews of nursing homes: Medicare's Care Compare publishes inspections, staffing and quality data instead. Here is what that record shows for St John Kronstadt Convalescent Center as of October 2026.
CMS rates it 5 out of 5 stars overall, above the California average of 3.2.
Online reviews from families and residents are on Google Maps and other sites; they reflect individual experiences and aren't checked by CMS. The full inspection reports, including what inspectors observed, are on Medicare Care Compare.
Staffing
Nursing staff spend about 4.45 hours per resident per day at St John Kronstadt Convalescent Center, above the California median of 4.27 (US median: 3.72). About 0.53 of those hours are from registered nurses. On weekends it falls to 3.98 hours, 11% below its all-week average. 14.3% of nursing staff left within a year (California median 36%). That is lower than most homes in California, a sign of a steadier team.
About this nursing home
Paying for care at St John Kronstadt Convalescent Center: Medicare and Medicaid
St John Kronstadt Convalescent Center is certified for both Medicare and Medicaid. Medicare Part A can cover a short skilled-nursing or rehab stay here after a qualifying hospital stay of at least three inpatient days (observation days don't count), for up to 100 days per benefit period. Medicaid can pay for long-term care for residents who meet California's income and asset rules. Being certified doesn't guarantee a Medicaid bed is open, so ask whether the home accepts residents whose Medicaid application is still pending.
In 2026 Medicare covers days 1–20 in full after the Part A deductible ($1,736 per benefit period); for days 21–100 you pay $217 a day; after day 100 you pay all costs. Medicare doesn't pay for long-term custodial care. Medicare's coverage rules.
Health inspections
The most recent standard inspection was on November 21, 2025 and found 11 deficiencies. In total, inspectors issued 33 citations in the last three years.
Each citation has a scope and severity letter from A to L. A–C: potential for minimal harm. D–F: potential for more than minimal harm. G–I: actual harm. J–L: immediate jeopardy to resident health or safety.
What the inspections found
Over the last three years, inspectors issued 33 citations at St John Kronstadt Convalescent Center across 5 inspection dates, 2 of them from complaint investigations. 1 was at the immediate-jeopardy level (J–L), CMS's most serious category, most recently on February 17, 2023. The most common areas cited were nutrition and dietary (7) and pharmacy service (6). The most serious was cited under the CMS rule to "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" (tag F0801, level K, February 17, 2023). 1 citation was under CMS's abuse, neglect and exploitation rules.
November 21, 2025 · 11 citations
EEnsure a licensed pharmacist perform a monthly drug regimen review, including the medical chart, following irregularity reporting guidelines in developed policies and procedures.
EEnsure 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.
EProcure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
DCoordinate assessments with the pre-admission screening and resident review program; and referring for services as needed.
DDevelop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.
DEnsure services provided by the nursing facility meet professional standards of quality.
DProvide care and assistance to perform activities of daily living for any resident who is unable.
DPost nurse staffing information every day.
DProvide and implement an infection prevention and control program.
DDevelop and implement policies and procedures for flu and pneumonia vaccinations.
BProvide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
April 16, 2025 · 1 citation · includes complaint inspection
DTimely report suspected abuse, neglect, or theft and report the results of the investigation to proper authorities.
December 10, 2024 · 1 citation · includes complaint inspection
DEnsure that a nursing home area is free from accident hazards and provides adequate supervision to prevent accidents.
June 7, 2024 · 5 citations
EHonor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.
EProvide care and assistance to perform activities of daily living for any resident who is unable.
EEnsure 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.
DProvide pharmaceutical services to meet the needs of each resident and employ or obtain the services of a licensed pharmacist.
BProvide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
February 17, 2023 · 15 citations, includes immediate jeopardy
KEmploy sufficient staff with the appropriate competencies and skills sets to carry out the functions of the food and nutrition service, including a qualified dietician.
FEnsure 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.
FEnsure food and drink is palatable, attractive, and at a safe and appetizing temperature.
FProcure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
FProvide and implement an infection prevention and control program.
FDesignate a qualified infection preventionist to be responsible for the infection prevent and control program in the nursing home.
FKeep all essential equipment working safely.
EHonor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.
EReasonably accommodate the needs and preferences of each resident.
EObserve each nurse aide's job performance and give regular training.
EEnsure medication error rates are not 5 percent or greater.
EEnsure that residents are free from significant medication errors.
EProvide sufficient support personnel to safely and effectively carry out the functions of the food and nutrition service.
EEnsure each resident receives and the facility provides food prepared in a form designed to meet individual needs.
DProvide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.
Questions to ask on a tour of St John Kronstadt Convalescent Center
- Inspectors cited the home at the immediate-jeopardy level on February 17, 2023 under the rule on nutrition and dietary. What changed afterwards, and can I see the plan of correction?
- CMS cited the home under its abuse and neglect rules on April 16, 2025. How are staff trained, and how are concerns reported?
- Do you have a Medicaid bed open now, and will you admit someone whose Medicaid application is still pending?
- When is the first care-plan meeting, and can family attend?
Questions come from this home's CMS data: its inspections, staffing and ownership record.
Fines and payment denials
CMS reports no fines or payment denials for this home in the last three years.
Rating history
| CMS month | Overall | Inspection | Staffing | Quality |
|---|---|---|---|---|
| October 2026 | 5/5 | 4/5 | 5/5 | 5/5 |
| August 2026 | 5/5 | 4/5 | 5/5 | 5/5 |
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Location
Hospitals near St John Kronstadt Convalescent Center
The Medicare-certified hospitals closest to this nursing home, with their CMS data. Ask the home which hospital it usually sends residents to.
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1.3 mi
Eden Medical Center Castro ValleyEmergency room ★★★★☆ Medicare overall 4 of 5Median ER visit 3h 14m for patients treated and sent home
- 2.7 mi
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5.2 mi
St Rose Hospital HaywardEmergency room ★☆☆☆☆ Medicare overall 1 of 5Median ER visit 2h 40m for patients treated and sent home
Hospital ratings, ER visit times and more at Hospitals In Each State
Source: CMS Care Compare. Distances are approximate.
Nearby nursing homes
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Source: CMS Provider Data Catalog (provider information, health deficiencies, penalties), October 2026. Inspection citations and penalties cover the last three years. Nursing Homes In Each State is independent and not affiliated with CMS or Medicare. About the data · Report a problem with this listing. Is this your nursing home? Feature it here.