Greenridge Post Acute
Scout 100El Sobrante, CA · 60 beds
5.0CMS rating
Skilled Nursing● Fills quickly
One of El Sobrante's top-rated skilled nursing communities.
Est. $11,600–$17,440/mo
View full evaluation →Skilled NursingCMS verified
St John Kronstadt Convalescent Center
4432 James Avenue, Castro Valley, CA 94546 · Alameda County
93
ExceptionalHaven Scout Score
Our composite of CMS ratings, staffing, and safety. This community rates exceptional.
Photos via google places, facility website.
Availability outlook● Fills quickly
Typically 85% full (42 of 49 beds occupied on an average day).
If this community is on your shortlist, checking current openings sooner rather than later genuinely matters here.
Source: federal census data (average daily residents vs. certified beds, CMS Care Compare). Confirm current openings with an advisor — availability changes weekly.
Our evaluation
An honest, data-grounded look at this community — every claim is drawn from public inspection data.
One of Castro Valley's top-rated skilled nursing communities
St John Kronstadt Convalescent Center is a non-profit skilled nursing facility in Castro Valley, CA, with 49 certified beds and an average of about 42 residents per day.
Medicare rates it 5 out of 5 stars overall — above the national average of about 3 stars. Component ratings: 4/5 on health inspections, 5/5 on staffing, 4/5 on quality measures.
Staff provide about 4.26 total nurse hours per resident each day (0.61 of them from registered nurses), above the national benchmark of roughly 3.9 hours. Annual nursing-staff turnover is about 22.2%, better than the ~52% national average — a sign of staffing stability. On the safety record, CMS notes 11 health deficiencies at its most recent standard survey.
Strengths
- ✓5-star overall CMS rating
- ✓Strong health-inspection rating
- ✓Above-average nurse staffing (4.26 hrs/resident/day)
- ✓Low staff turnover (continuity of care)
- ✓No federal fines on record
- ✓Full sprinkler system
Things to ask about
None noted in the public data.
Best for: Families who want a highly rated, well-staffed setting in Castro Valley for 24/7 skilled nursing or post-hospital rehabilitation.
At a glance
- Certified beds
- 49
- Avg. residents/day
- 42
- Ownership
- Non profit - Corporation
- Part of a chain
- Independent
- Continuing care
- No
- CMS provider #
- 555016
Federal quality ratings
From the U.S. Centers for Medicare & Medicaid Services (CMS), on a 1–5 star scale.
Overall rating
Health inspections
Staffing
Quality measures
Pricing & cost
We publish transparent estimates and verify exact pricing on request. No surprises.
| Level of care | Monthly cost | Source |
|---|---|---|
| Skilled Nursing | $11,600–$17,440/mo (median $14,030) | Local market estimate |
2024–2026 published survey medians, state median adjusted to local Oakland prices (BEA regional price parities). Request a quote for exact pricing. Range spans semi-private to private rooms. How we estimate costs
Staffing & care
More nursing time per resident — and lower turnover — generally means more attentive care.
- Total nurse hrs / resident / day
- 4.26
- National avg ≈ 3.9
- RN hrs / resident / day
- 0.61
- National avg ≈ 0.75
- Nursing staff turnover
- 22.2%
- National avg ≈ 52%
Safety & inspection record
Federal inspectors survey nursing homes roughly once a year. Here's the latest on file.
- Health deficiencies (last survey)
- 11
- Federal fines
- None on record
- Total penalties
- 0
- Last standard survey
- 2025-11-21
- Sprinkler system
- Yes
- Resident & family council
- Both
What inspectors found
The most recent findings from federal health inspections (33 citations on record — showing the latest 8). Every nursing home is inspected roughly once a year; most receive some citations.
2025-11-21Severity E — potential for harmPharmacy Service Deficiencies
Ensure a licensed pharmacist perform a monthly drug regimen review, including the medical chart, following irregularity reporting guidelines in developed policies and procedures.
2025-11-21Severity E — potential for harmPharmacy Service Deficiencies
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, compar…
2025-11-21Severity E — potential for harmNutrition and Dietary Deficiencies
Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.
2025-11-21Severity D — potential for harmResident Assessment and Care Planning Deficiencies
Coordinate assessments with the pre-admission screening and resident review program; and referring for services as needed.
2025-11-21Severity D — potential for harmResident Assessment and Care Planning Deficiencies
Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.
2025-11-21Severity D — potential for harmResident Assessment and Care Planning Deficiencies
Ensure services provided by the nursing facility meet professional standards of quality.
2025-11-21Severity D — potential for harmQuality of Life and Care Deficiencies
Provide care and assistance to perform activities of daily living for any resident who is unable.
2025-11-21Severity D — potential for harmNursing and Physician Services Deficiencies
Post nurse staffing information every day.
Severity uses the CMS scope/severity scale: D–F = potential for harm, G–I = actual harm, J–L = immediate jeopardy. Source: CMS Care Compare health citations; data as of the latest federal release. Discuss any finding directly with the community on a tour.
Services & amenities
- ✓ Full automatic sprinkler system
- ✓ Medicare & Medicaid certified
- ✓ 24-hour licensed nursing
- ✓ On-site rehabilitation therapy
- ✓ Rehabilitation services
- ✓ 24/7 staff
Location
4432 James Avenue, Castro Valley, CA
- Monday: Open 24 hours
- Tuesday: Open 24 hours
- Wednesday: Open 24 hours
- Thursday: Open 24 hours
- Friday: Open 24 hours
- Saturday: Open 24 hours
- Sunday: Open 24 hours
Reviews & reputation
We aggregate ratings across Google, Yelp, and verified families — and link back to every source so you can read more.
Verified family reviews
No verified family reviews yet for St John Kronstadt Convalescent Center.
Have a loved one here, or recently toured? Help other families by sharing your experience — we verify every review before it's published.
Talk to an advisor about this communityCommon questions about St John Kronstadt Convalescent Center
How much does St John Kronstadt Convalescent Center cost?
St John Kronstadt Convalescent Center does not publish exact rates. Comparable skilled nursing in the Castro Valley, CA area typically runs $11,600–$17,440 per month (median $14,030, based on published survey medians adjusted for local prices). A Haven advisor can confirm current pricing for free.
What is St John Kronstadt Convalescent Center's Medicare rating?
Medicare (CMS) rates St John Kronstadt Convalescent Center 5 out of 5 stars overall, including 4/5 for health inspections, 5/5 for staffing, 4/5 for quality measures. The national average is about 3 stars.
How is the staffing at St John Kronstadt Convalescent Center?
Staff provide about 4.26 total nurse hours per resident per day (national benchmark ≈ 3.9), and annual nursing-staff turnover is about 22.2% (national average ≈ 52%). These figures are reported to the federal government and updated regularly.
What did inspectors find at St John Kronstadt Convalescent Center?
St John Kronstadt Convalescent Center has 33 health citations on its recent federal inspection record (last standard survey: 2025-11-21). The full citation-by-citation detail, with severity levels, is published on this page.
Does St John Kronstadt Convalescent Center have availability?
Typically 85% full (42 of 49 beds occupied on an average day). Availability changes weekly — a Haven advisor can confirm current openings at no cost.
What types of care does St John Kronstadt Convalescent Center offer?
St John Kronstadt Convalescent Center in Castro Valley, CA offers skilled nursing and is licensed for 49 beds.
The best time to decide is before a crisis decides for you
Most families start this search after a fall, a hospital stay, or a caregiver reaching a breaking point — and end up choosing from whatever has a bed open that week. Families who plan even a few weeks ahead get to choose on quality, fit, and price instead of availability alone.
- Move-ins take time: assessments, paperwork, and preparation typically run 2–6 weeks in Oakland.
- The best communities fill first: top-rated communities often run a waitlist — touring early holds your place in line.
- Touring costs nothing and commits you to nothing — but it turns a future emergency into a calm, informed choice.
Your next steps — this week
- 1Confirm the fitCheck the inspection record and staffing data on this page against your loved one's needs.
- 2Get exact pricing & availabilityRequest current rates for St John Kronstadt Convalescent Center — takes one minute, answered same day.
- 3Tour 2–3 communitiesCompare this community against two alternatives. Ask about staff turnover, all-in monthly cost, and care-plan changes.
- 4Hold a spotMost communities hold a residence with a small refundable deposit while you decide.
Data sources:CMS verifiedGoogle
Last verified 2026-07-06. We refresh inspection data monthly and reviews continuously.
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