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Assisted Living, Nursing Homes · Medicare certified

Villa Siena

1855 Miramonte Avenue · Mountain View, CA 94040 · Lic. #430708114 (CA) · 77 certified beds

(650) 961-6484

Licensed · Verify with the state (opens in a new tab)

NPI 1730183724 (opens in a new tab)

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About Villa Siena

Villa Siena is an assisted living community in Mountain View, California. Its capacity is 77 beds, above the Santa Clara County median of 6 for assisted living communities. The CA licensing record lists its status as "LICENSED". It is run by a nonprofit operator. It is Medicare certified. Its public inspection record shows 34 citations, the most recent on July 28, 2025. Enforcement records show no fine or payment denial against it. Nurse staffing averages 5.65 hours per resident per day. It is one of 6 assisted living communities listed in Mountain View. Residents and families can raise concerns with the Office of the State Long-Term Care Ombudsman at 1-800-231-4024. Its public records were last updated in November 2026.

Public record

CMS Care Compare, updated October 2026

Certification

Medicare-certified.

Ratings

Overall

1.0

Staffing

1.0

Quality measures

1.0

CMS Care Compare (nursing home rating), October 2026.

Inspection history (34)

Records from December 2022 to July 2025.

  • July 28, 2025

    Tag F0657

    Develop the complete care plan within 7 days of the comprehensive assessment; and prepared, reviewed, and revised by a team of health professionals.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected August 11, 2025.

  • July 28, 2025

    Tag F0761

    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.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected August 11, 2025.

  • July 28, 2025

    Tag F0604

    Ensure that each resident is free from the use of physical restraints, unless needed for medical treatment.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected August 11, 2025.

  • July 28, 2025

    Tag F0812

    Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected August 1, 2025.

  • July 28, 2025

    Tag F0641

    Ensure each resident receives an accurate assessment.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected August 12, 2025.

  • July 28, 2025

    Tag F0656

    Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected August 11, 2025.

  • July 28, 2025

    Tag F0684

    Provide appropriate treatment and care according to orders, resident’s preferences and goals.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected July 29, 2025.

  • July 28, 2025

    Tag F0732

    Post nurse staffing information every day.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected August 1, 2025.

  • July 28, 2025

    Tag F0700

    Try different approaches before using a bed rail. If a bed rail is needed, the facility must (1) assess a resident for safety risk; (2) review these risks and benefits with the resident/representative; (3) get informed consent; and (4) Correctly install and maintain the bed rail.

    Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected August 11, 2025.

  • July 28, 2025

    Tag F0730

    Observe each nurse aide's job performance and give regular training.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected August 12, 2025.

  • July 28, 2025

    Tag F0605

    Prevent the use of unnecessary psychotropic medications or use medications that may restrain a resident's ability to function.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected August 11, 2025.

  • April 22, 2024

    Tag F0883

    Develop and implement policies and procedures for flu and pneumonia vaccinations.

    Severity F: widespread, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0641

    Ensure each resident receives an accurate assessment.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0758

    Implement gradual dose reductions(GDR) and non-pharmacological interventions, unless contraindicated, prior to initiating or instead of continuing psychotropic medication; and PRN orders for psychotropic medications are only used when the medication is necessary and PRN use is l….

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0695

    Provide safe and appropriate respiratory care for a resident when needed.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0711

    Ensure the resident's doctor reviews the resident's care, writes, signs and dates progress notes and orders, at each required visit.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0727

    Have a registered nurse on duty 8 hours a day; and select a registered nurse to be the director of nurses on a full time basis.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0604

    Ensure that each resident is free from the use of physical restraints, unless needed for medical treatment.

    Severity E: pattern, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0761

    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.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

  • April 22, 2024

    Tag F0656

    Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured.

    Severity D: isolated, no actual harm, potential for more than minimal harm. Corrected May 9, 2024.

See the source data on data.cms.gov (opens in a new tab)

Penalties

CMS lists no fines or payment denials for this nursing home in the last three years.

Staffing

5.65 nurse hours per resident per day in Q2 2026, down from 6.12 in Q4 2025.

From the payroll records nursing homes file with CMS.

Ownership

Non profit - Corporation

Typical cost

CareScout Cost of Care Survey, 2025

This provider's prices aren't public. Here is what the same care typically costs in California.

Assisted Living

California median$7,000/mo

Nursing Homes

California median$12,167/mo

Nearby alternatives

Other licensed providers in Mountain View.

Deciding between options? Complete Guide to Assisted Living (2026)

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Villa Siena in Mountain View, CA · ElderCareCosts