Nursing homeActive
St John Kronstadt Convalescent Center
4432 James Avenue, Castro Valley, CA 94546510889700049 certified beds · 43 residentsNon profit - CorporationMedicare and Medicaid
Surveys on file
5
since 2023
Deficiencies
33
● 2● 30● 1
Penalties · 3 yrs
—
none on file
Last survey
2025-11-21
Standard
CMS overall
5 / 5
stars as published by CMS
CMS overall 5/5
Health 4
Staffing 5
Quality 5
Star ratings as published by CMS · CMS’s caveats
Survey history
Source: CMS · California Department of Public Health · data as of 2026-08-01| Date | Kind | Deficiencies | Official record | Archived PDF |
|---|---|---|---|---|
| 2025-11-21 | Standard | 1100 | CMS-2567 (Care Compare) | — |
| 2025-04-16 | Complaint | 010 | CMS-2567 (Care Compare) | — |
| 2024-12-10 | Complaint | 010 | CMS-2567 (Care Compare) | — |
| 2024-06-07 | Standard | 140 | CMS-2567 (Care Compare) | — |
| 2023-02-17 | Standard | 0141 | CMS-2567 (Care Compare) | — |
Counts by class: paperwork · standard · harm.
Deficiencies
CMS · California Department of Public Health publishes each citation’s tag, official description and scope/severity letter. The surveyor’s written findings are in the Statement of Deficiencies (CMS-2567) for each survey, linked above.
F644Coordinate assessments with the pre-admission screening and resident review program; and referring for services as needed.Scope/severity DStandard
Care planningRecords
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F644
F656Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.Scope/severity DStandard
Care planningRecords
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F656
F658Ensure services provided by the nursing facility meet professional standards of quality.Scope/severity DStandard
Care planningRecords
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F658
F677Provide care and assistance to perform activities of daily living for any resident who is unable.Scope/severity DStandard
Care planning
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F677
F732Post nurse staffing information every day.Scope/severity DStandard
Staffing
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F732
F756Ensure a licensed pharmacist perform a monthly drug regimen review, including the medical chart, following irregularity reporting guidelines in developed policies and procedures.Scope/severity EStandard
Medication
Pattern; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F756
F761Ensure 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.Scope/severity EStandard
Medication
Pattern; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F761
F812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.Scope/severity EStandard
Food & nutrition
Pattern; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F812
F880Provide and implement an infection prevention and control program.Scope/severity DStandard
Infection control
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F880
F883Develop and implement policies and procedures for flu and pneumonia vaccinations.Scope/severity DStandard
Infection control
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-12-21Record 555016-20251121-F883
F912Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.Scope/severity BPaperwork
Environment
Pattern; potential for minimal harm.Corrected 2025-12-21Record 555016-20251121-F912
F609Timely report suspected abuse, neglect, or theft and report the results of the investigation to proper authorities.Scope/severity DStandard
Abuse & neglect
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-05-27Record 555016-20250416-F609
F689Ensure that a nursing home area is free from accident hazards and provides adequate supervision to prevent accidents.Scope/severity DStandard
Care planningFalls
Isolated; no actual harm, potential for more than minimal harm.Corrected 2025-01-15Record 555016-20241210-F689
F550Honor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.Scope/severity EStandard
Dignity & rights
Pattern; no actual harm, potential for more than minimal harm.Corrected 2024-07-04Record 555016-20240607-F550
F677Provide care and assistance to perform activities of daily living for any resident who is unable.Scope/severity EStandard
Care planning
Pattern; no actual harm, potential for more than minimal harm.Corrected 2024-07-04Record 555016-20240607-F677
F755Provide pharmaceutical services to meet the needs of each resident and employ or obtain the services of a licensed pharmacist.Scope/severity DStandard
Medication
Isolated; no actual harm, potential for more than minimal harm.Corrected 2024-07-04Record 555016-20240607-F755
F761Ensure 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.Scope/severity EStandard
Medication
Pattern; no actual harm, potential for more than minimal harm.Corrected 2024-07-04Record 555016-20240607-F761
F912Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.Scope/severity BPaperwork
Environment
Pattern; potential for minimal harm.Corrected 2024-07-04Record 555016-20240607-F912
F801Employ sufficient staff with the appropriate competencies and skills sets to carry out the functions of the food and nutrition service, including a qualified dietician.Scope/severity KHarm
Food & nutrition
Pattern; immediate jeopardy to resident health or safety.Corrected 2023-03-24Record 555016-20230217-F801
F550Honor the resident's right to a dignified existence, self-determination, communication, and to exercise his or her rights.Scope/severity EStandard
Dignity & rights
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F550
F558Reasonably accommodate the needs and preferences of each resident.Scope/severity EStandard
Dignity & rights
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F558
F730Observe each nurse aide's job performance and give regular training.Scope/severity EStandard
Staffing
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F730
F759Ensure medication error rates are not 5 percent or greater.Scope/severity EStandard
Medication
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F759
F760Ensure that residents are free from significant medication errors.Scope/severity EStandard
Medication
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F760
F802Provide sufficient support personnel to safely and effectively carry out the functions of the food and nutrition service.Scope/severity EStandard
Food & nutrition
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-05-17Record 555016-20230217-F802
F803Ensure 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.Scope/severity FStandard
Food & nutrition
Widespread; no actual harm, potential for more than minimal harm.Corrected 2023-05-17Record 555016-20230217-F803
F804Ensure food and drink is palatable, attractive, and at a safe and appetizing temperature.Scope/severity FStandard
Food & nutrition
Widespread; no actual harm, potential for more than minimal harm.Corrected 2023-05-17Record 555016-20230217-F804
F805Ensure each resident receives and the facility provides food prepared in a form designed to meet individual needs.Scope/severity EStandard
Food & nutrition
Pattern; no actual harm, potential for more than minimal harm.Corrected 2023-05-17Record 555016-20230217-F805
F812Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.Scope/severity FStandard
Food & nutrition
Widespread; no actual harm, potential for more than minimal harm.Corrected 2023-05-17Record 555016-20230217-F812
F880Provide and implement an infection prevention and control program.Scope/severity FStandard
Infection control
Widespread; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F880
F882Designate a qualified infection preventionist to be responsible for the infection prevent and control program in the nursing home.Scope/severity FStandard
Infection control
Widespread; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F882
F908Keep all essential equipment working safely.Scope/severity FStandard
Environment
Widespread; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F908
F912Provide rooms that are at least 80 square feet per resident in multiple rooms and 100 square feet for single resident rooms.Scope/severity DStandard
Environment
Isolated; no actual harm, potential for more than minimal harm.Corrected 2023-03-24Record 555016-20230217-F912
Staffing
CMS Payroll-Based Journal · PBJ, as published Aug 2026 · explainerRN hours per resident day0.69
Facility
California
National
California 0.67 · National 0.69
Total nurse hours per resident day4.22
Facility
California
National
California 4.52 · National 3.86
Weekend total nurse hours3.71
Facility
California
National
California 4.09 · National 3.42
Total nursing staff turnover12%
Facility
California
National
California 37% · National 46%
Registered nurse turnover17%
Facility
California
National
California 38% · National 43%
Quality measures
CMS MDS quality measures · 2025Q2-2026Q1 · definitions| Measure | Facility | California | National |
|---|---|---|---|
| Percentage of long-stay residents with pressure ulcers lower is better | 0.7% | 4.3% | 4.6% |
| Percentage of long-stay residents experiencing one or more falls with major injury lower is better | 4.2% | 1.6% | 3.2% |
| Percentage of long-stay residents who received an antipsychotic medication lower is better | 10.0% | 12.0% | 15.4% |
| Percentage of long-stay residents with a urinary tract infection lower is better | 0.0% | 1.2% | 1.6% |
| Percentage of long-stay residents who were physically restrained lower is better | 0.0% | 0.4% | 0.1% |
| Percentage of long-stay residents whose need for help with daily activities has increased lower is better | 11.8% | 10.2% | 13.9% |
| Percentage of long-stay residents who lose too much weight lower is better | 5.9% | 4.0% | 5.2% |
| Percentage of long-stay residents who received an antianxiety or hypnotic medication lower is better | 7.1% | 13.7% | 19.5% |
Figures verbatim from CMS, with the state and national figures from the same release. The direction that counts as better is CMS’s own and is stated on every row.
Ownership
As reported to CMS (Provider Enrollment)| Entity | Role | Interest | Since | Registry |
|---|---|---|---|---|
| St John Kronstadt Home For Aged Russian Americans Organization | 5% OR GREATER DIRECT OWNERSHIP INTEREST | 100% | — | — |
| Danby, Craig Individual | OPERATIONAL/MANAGERIAL CONTROL | NOT APPLICABLE | — | — |
| Garcia, Fabiola Individual | OPERATIONAL/MANAGERIAL CONTROL | NOT APPLICABLE | — | — |
| Gonzalez, Edward Individual | OPERATIONAL/MANAGERIAL CONTROL | NOT APPLICABLE | — | — |
| Grimes, Jeremy Individual | OPERATIONAL/MANAGERIAL CONTROL | NOT APPLICABLE | — | — |
| Serenity 4 Management Services LLC Organization | OPERATIONAL/MANAGERIAL CONTROL | NOT APPLICABLE | — | — |
| Garcia, Fabiola Individual | ADP OF THE SNF | NOT APPLICABLE | — | — |
| Grimes, Jeremy Individual | ADP OF THE SNF | NOT APPLICABLE | — | — |
| Huynh, Uyen-Chi Individual | ADP OF THE SNF | NOT APPLICABLE | — | — |
| Koloboff, Constantine Individual | CORPORATE DIRECTOR | NOT APPLICABLE | — | — |
| Koloboff, Constantine Individual | CORPORATE OFFICER | NOT APPLICABLE | — | — |
| Loukianoff, Alexander Individual | CORPORATE DIRECTOR | NOT APPLICABLE | — | — |
| Maximow, Andrew Individual | CORPORATE DIRECTOR | NOT APPLICABLE | — | — |
| Pavlenko, Stefan Individual | CORPORATE DIRECTOR | NOT APPLICABLE | — | — |
| Pavlenko, Stefan Individual | CORPORATE OFFICER | NOT APPLICABLE | — | — |
| Serenity 4 Management Services LLC Organization | ADP OF THE SNF | NOT APPLICABLE | — | — |
Ownership as reported to CMS/state. CMS ownership data has known gaps; merges between entities are published only after human review.
Cost context
County figures from public surveys. Not this facility’s price. Nursing-home rates are not published by CMS or California.
No county cost figures on file for Alameda.
Nearby nursing homes
| Facility | Distance | Last survey | Deficiencies · 3 yrs |
|---|---|---|---|
| Canyon Creek Post-Acute Castro Valley | 1.4 mi | 2026-01-12 | 190 |
| Valley Pointe Nursing & Rehabilitation Center Castro Valley | 1.3 mi | 2026-05-01 | 1271 |
| East Bay Post-Acute Castro Valley | 1.3 mi | 2026-04-07 | 1472 |
| Baywood Court Health Center Castro Valley | 1.6 mi | 2024-10-11 | 040 |
| Sage Post Acute Hayward | 1.7 mi | 2026-05-12 | 2201 |
Watch this facility
One email when a new survey, harm-class deficiency, penalty, Special Focus change or ownership change is recorded. Nothing else, ever.
Sources & provenance
| Section | Agency · dataset | Retrieved |
|---|---|---|
| Facility, ratings | CMS Provider Data · Nursing Home Provider Information | 2026-08-01 |
| Surveys | CMS · Survey Summary | 2026-08-01 |
| Deficiencies | CMS · Health Deficiencies (CMS-2567 findings via Care Compare) | 2026-08-01 |
| Penalties | CMS · Penalties | 2026-08-01 |
| Staffing | CMS · Payroll-Based Journal (PBJ, as published Aug 2026) | 2026-08-01 |
| Quality measures | CMS · MDS Quality Measures | 2026-08-01 |
| Ownership | CMS · Ownership | 2026-08-01 |