Sage Mountain Senior Living
Sage Mountain, located in Thousand Oaks, CA, is a community offering a variety of care options where remarkable moments are created daily, fostering a familial atmosphere based on top-of-the-line assisted living and memory care services. The community celebrates the good times and offers support in challenging moments, aiming to positively impact its residents’ lives and uphold the values of family, compassion, and celebration. They seek to extend these qualities to teammates, residents, resident families, and the community.
Sage Mountain provides Assisted Living and Memory Care options, promoting independent living with a caring support system. Assisted living apartments are designed for various needs, offering social opportunities, comfort, and relief from home upkeep responsibilities, featuring amenities like in-apartment kitchenettes, walk-in showers, and 24-hour emergency alert systems. Memory Care at Sage Mountain focuses on individualized care for those with dementia, ensuring safety, dignity, and personalized support with spacious closets, walk-in showers, and 24-hour emergency alert systems. Sage Mountain is committed to creating personalized, enriching experiences for its residents of assisted living and memory care.
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About this community
Occupancy
Sage Mountain Senior Living is legally operated by Sage Mountain Sr. Housing Partners; Agemark Mgmt, and administrated by Christian Castillo.
Staffing
Key information about the people who lead and staff this community.
Inspection History
In California, the Department of Social Services (for assisted living facilities) and the Department of Public Health (for nursing homes) conduct inspections to ensure resident safety and regulatory compliance.
Inspection Scorecard
This scorecard compares key inspection, citation, and complaint metrics at this facility against the California state average. Metrics rated ≥15% worse than average are highlighted in red; those ≥15% better are highlighted in green.
Since 2021 vs. California state average• Total citations (460% above)
• Serious citations (Type A) (933% above)
• Moderate citations (Type B) (525% above)
• Citations per year (460% above)
• Total visits (431% above)
• Complaint visits (308% above)
• Other visits (286% above)
• Official inspections (25% above)
• Complaint investigations (220% above) 1 Better Metrics better than California average:
• Citations per inspection (79% below)
Citations
| This Facility | CA Average | vs. CA Avg |
|---|---|---|---|
|
Total citations
| 56 | 10 | This facility has 460% more total citations than a typical California assisted living residence (56 vs. CA avg 10).↑ 460% worse |
|
Serious citations (Type A)
| 31 | 3 | This facility has 933% more serious citations (type a) than a typical California assisted living residence (31 vs. CA avg 3).↑ 933% worse Rank #1160 / 1164 Serious citations (Type A) — State benchmarked This home is ranked 1160th out of 1164 homes in California. Shows this facility's # of serious citations compared to the California average among 1164 comparable communities in the ranking pool. |
|
Moderate citations (Type B)
| 25 | 4 | This facility has 525% more moderate citations (type b) than a typical California assisted living residence (25 vs. CA avg 4).↑ 525% worse |
|
Citations per year
| 11.2 | 2 | This facility has 460% more citations per year than a typical California assisted living residence (11.2 vs. CA avg 2).↑ 460% worse |
|
Citations per inspection
| 0.7 | 3.3 | This facility has 79% fewer citations per inspection than a typical California assisted living residence (0.7 vs. CA avg 3.3).↓ 79% better |
Inspections & Visits
| This Facility | CA Average | vs. CA Avg |
|---|---|---|---|
|
Total visits
| 85 | 16 | This facility has 431% more total visits than a typical California assisted living residence (85 vs. CA avg 16).↑ 431% worse |
|
Complaint visits
| 53 | 13 | This facility has 308% more complaint visits than a typical California assisted living residence (53 vs. CA avg 13).↑ 308% worse Rank #1360 / 1397 Complaint visits — State benchmarked This home is ranked 1360th out of 1397 homes in California. Shows this facility's # of complaint visits compared to the California average among 1397 comparable communities in the ranking pool. |
|
Other visits
| 27 | 7 | This facility has 286% more other visits than a typical California assisted living residence (27 vs. CA avg 7).↑ 286% worse |
|
Official inspections
| 5 | 4 | This facility has 25% more official inspections than a typical California assisted living residence (5 vs. CA avg 4).↑ 25% worse |
|
Complaint investigations
| 32 | 10 | This facility has 220% more complaint investigations than a typical California assisted living residence (32 vs. CA avg 10).↑ 220% worse |
Inspection Reports Summary
An editor-reviewed summary of the themes and findings across this facility's recent inspection reports.
- February 5, 2026 complaint investigation found no evidence that a caregiver hit a resident, with no health or safety concerns observed during the visit.
- October 21, 2025 complaint investigation substantiated neglect causing a resident to choke to death and issued a $15,000 civil penalty for insufficient competent staffing.
- December 18, 2025 complaint investigation substantiated failure to notify authorized representatives of three falls for one resident, citing inadequate documentation and communication.
What does this home offer?
Pets Allowed
Housing Options: Studio / 1 Bed / 2 Bed
Building Type: 3-story
Transportation Services
Fitness and Recreation
Type of Rooms Available
Sage Mountain Senior Living Virtual Tour

Places of interest near Sage Mountain Senior Living
7.2 miles from city center
Estimated distance in miles from Newbury Park's city center to Sage Mountain Senior Living's address, calculated via Google Maps.
— 4 miles to nearest hospital (Los Robles Regional Medical Center)
Calculate Travel Distance to Sage Mountain Senior Living
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Financial Assistance for
Assisted Living in California
Sage Mountain Senior Living is located in Newbury Park, California.
Here are the financial assistance programs available to residents in California.
Compare Assisted Living around Thousand Oaks
The information below is reported by the California Department of Social Services and Department of Public Health.
| Belmont Village Senior Living Thousand Oaks |
AL Assisted Living A licensed, long-term care setting for seniors or individuals with disabilities who need help with daily activities — like bathing, dressing, and medication management — but not 24-hour skilled nursing. Offers housing, meals, and around-the-clock support while aiming to maximize resident independence.
MC Memory Care Secured, specialized care for people living with Alzheimer's or dementia. Staff trained in cognitive impairment, with higher staff-to-resident ratios and an environment designed to reduce confusion and wandering risk. | Thousand Oaks (North Moorpark Road) | 158
Facility
158
CA AVG
103
Rank
#310 / 1657 | Yes |
21
Facility
21
CA AVG
57
Rank
#1839 / 2092 | 66
Facility
66
CA AVG
81
Rank
#1218 / 1401 | 4 | 13
Facility
13
CA AVG
13
Rank
#953 / 1397 | 8
Facility
8
CA AVG
3
Rank
#1015 / 1164 | 14
Facility
14
CA AVG
13
Rank
#511 / 1487 |
72.2%
Facility
72.2%
CA AVG
74.8%
Rank
#791 / 1368 | A+ | Bmsh I Belmont To Gp LLC; Belmont Three LLC | Studio / 1 Bed / 2 Bed |
| Sage Mountain Senior Living |
AL Assisted Living A licensed, long-term care setting for seniors or individuals with disabilities who need help with daily activities — like bathing, dressing, and medication management — but not 24-hour skilled nursing. Offers housing, meals, and around-the-clock support while aiming to maximize resident independence.
MC Memory Care Secured, specialized care for people living with Alzheimer's or dementia. Staff trained in cognitive impairment, with higher staff-to-resident ratios and an environment designed to reduce confusion and wandering risk.
RC Respite Care Short-term temporary care — days to weeks — to give family caregivers a break. Full care provided during the stay. Often used after hospitalization or to trial a facility before a permanent placement decision. | Newbury Park | 145
Facility
145
CA AVG
103
Rank
#388 / 1657 | Yes |
14
Facility
14
CA AVG
57
Rank
#1913 / 2092 | 59
Facility
59
CA AVG
81
Rank
#1301 / 1401 | 5 | 53
Facility
53
CA AVG
13
Rank
#1360 / 1397 | 31
Facility
31
CA AVG
3
Rank
#1160 / 1164 | 7
Facility
7
CA AVG
13
Rank
#805 / 1487 |
70.3%
Facility
70.3%
CA AVG
74.8%
Rank
#838 / 1368 | A+ | Sage Mountain Sr. Housing Partners; Agemark Mgmt | Studio / 1 Bed / 2 Bed |
| Hillcrest Royale |
AL Assisted Living A licensed, long-term care setting for seniors or individuals with disabilities who need help with daily activities — like bathing, dressing, and medication management — but not 24-hour skilled nursing. Offers housing, meals, and around-the-clock support while aiming to maximize resident independence.
HC Home Care Professional care delivered in the person's own home — from companionship and errands to skilled nursing and therapy. Allows seniors to age in place. Medicare covers skilled home health when medically necessary.
RC Respite Care Short-term temporary care — days to weeks — to give family caregivers a break. Full care provided during the stay. Often used after hospitalization or to trial a facility before a permanent placement decision. | Thousand Oaks | 145
Facility
145
CA AVG
103
Rank
#388 / 1657 | No |
79
Facility
79
CA AVG
57
Rank
#451 / 2092 | 75
Facility
75
CA AVG
81
Rank
#973 / 1401 | 4 | 3
Facility
3
CA AVG
13
Rank
#441 / 1397 | 9
Facility
9
CA AVG
3
Rank
#1033 / 1164 | 23
Facility
23
CA AVG
13
Rank
#289 / 1487 |
62.8%
Facility
62.8%
CA AVG
74.8%
Rank
#1054 / 1368 | A+ | The Retirement Home, Inc. | Studio / 1 Bed / 2 Bed |
| Sunrise of Westlake Village |
AL Assisted Living A licensed, long-term care setting for seniors or individuals with disabilities who need help with daily activities — like bathing, dressing, and medication management — but not 24-hour skilled nursing. Offers housing, meals, and around-the-clock support while aiming to maximize resident independence.
MC Memory Care Secured, specialized care for people living with Alzheimer's or dementia. Staff trained in cognitive impairment, with higher staff-to-resident ratios and an environment designed to reduce confusion and wandering risk. | Thousand Oaks | 124
Facility
124
CA AVG
103
Rank
#540 / 1657 | Yes |
74
Facility
74
CA AVG
57
Rank
#598 / 2092 | 92
Facility
92
CA AVG
81
Rank
#308 / 1401 | 4 | 3
Facility
3
CA AVG
13
Rank
#441 / 1397 | 1
Facility
1
CA AVG
3
Rank
#413 / 1164 | 21
Facility
21
CA AVG
13
Rank
#336 / 1487 |
70.2%
Facility
70.2%
CA AVG
74.8%
Rank
#842 / 1368 | A+ | Szr Westlake Village; Sunrise Senior Living Mgt | Studio / 1 Bed / 2 Bed |
| OakView Health Center |
AL Assisted Living A licensed, long-term care setting for seniors or individuals with disabilities who need help with daily activities — like bathing, dressing, and medication management — but not 24-hour skilled nursing. Offers housing, meals, and around-the-clock support while aiming to maximize resident independence.
MC Memory Care Secured, specialized care for people living with Alzheimer's or dementia. Staff trained in cognitive impairment, with higher staff-to-resident ratios and an environment designed to reduce confusion and wandering risk.
NH Nursing Home Licensed facility providing 24/7 skilled nursing care for residents with complex, ongoing medical needs. Staffed by RNs, LPNs, and CNAs. Inspected and star-rated annually by CMS. Accepts Medicare (short-term rehab) and Medicaid (long-term care).
NH Nursing Home Licensed facility providing 24/7 skilled nursing care for residents with complex, ongoing medical needs. Staffed by RNs, LPNs, and CNAs. Inspected and star-rated annually by CMS. Accepts Medicare (short-term rehab) and Medicaid (long-term care). | Thousand Oaks (Mountclef Village) | 63
Facility
63
CA AVG
103
Rank
#1063 / 1657 | No |
20
Facility
20
CA AVG
57
Rank
#1846 / 2092 | 89
Facility
89
CA AVG
81
Rank
#461 / 1401 | 5 | 4
Facility
4
CA AVG
13
Rank
#529 / 1397 | 2
Facility
2
CA AVG
3
Rank
#600 / 1164 | 18
Facility
18
CA AVG
13
Rank
#428 / 1487 |
79.4%
Facility
79.4%
CA AVG
74.8%
Rank
#608 / 1368 | A+ | Oakview Hc LLC | Private / Semi-Private Rooms |
Frequently Asked Questions about Sage Mountain Senior Living
What neighborhood is Sage Mountain Senior Living in?
Sage Mountain Senior Living is in the Newbury Park neighborhood of Newbury Park.
Who is the owner of Sage Mountain Senior Living?
The legal owner and operator of Sage Mountain Senior Living is Sage Mountain Sr. Housing Partners; Agemark Mgmt.
Is Sage Mountain Senior Living in a walkable area?
Sage Mountain Senior Living has a walk score of 14. Car-dependent. Most errands require a car, with limited nearby walkable options.
What is the occupancy rate at Sage Mountain Senior Living?
Sage Mountain Senior Living's occupancy is 70%.
Who is the administrator of Sage Mountain Senior Living?
Christian Castillo is the administrator of Sage Mountain Senior Living.
How many beds does Sage Mountain Senior Living have?
Sage Mountain Senior Living has 145 beds.
Has Sage Mountain Senior Living had any recent deficiencies or citations?
Sage Mountain Senior Living has had 56 recently reported deficiencies.
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