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SOURCE DATA SEP 2026

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 on official state lookup (opens in a new tab)

NPI 1730183724. Look this up in the CMS NPPES registry (opens in a new tab)

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About Villa Siena

In Mountain View, California, Villa Siena is listed as an assisted living community. Its reported capacity is 77 beds. The CA licensing record reads "LICENSED" for this listing. It is recorded as a nonprofit operator. Federal records list it as Medicare certified. Our copy of the inspection record holds 34 citations, the newest dated 28 July 2025. No fine or payment denial is on record against it. Staffing reports put it at 6.04 nurse hours per resident per day. Every fact above comes from the public records listed in the sources section on this page. The newest source file we hold for this listing is dated September 2026.

Public record

CMS Care Compare · Source data July 2026

Certification

  • Medicare-certified (CMS Certification Number on file)

Ratings

1.0(CMS Care Compare (nursing home rating))Source: CMS Care Compare · Updated 2026-08-01.GOV

Staffing rating

1.0

Quality-measure rating

1.0

Inspections on record

2

Cited deficiencies

24

1.0(CMS Care Compare (nursing home rating))Source: CMS Care Compare · Updated 2026-07-01.GOV

Staffing rating

1.0

Quality-measure rating

1.0

Inspections on record

2

Cited deficiencies

24

Not yet ratedSource: CMS Care Compare · Updated 2026Q1.GOV

Staffing rating

Not published

Quality-measure rating

Not published

Inspections on record

Not published

Cited deficiencies

Not published

Not yet ratedSource: CMS Care Compare · Updated 2025Q4.GOV

Staffing rating

Not published

Quality-measure rating

Not published

Inspections on record

Not published

Cited deficiencies

Not published

3.0(CMS Care Compare (nursing home rating))Source: CMS Care Compare · Updated 2026-06-01.GOV

Staffing rating

5.0

Quality-measure rating

1.0

Inspections on record

2

Cited deficiencies

24

Inspection history (34)

Records from December 2022 to July 2025.

  • July 28, 2025 · E

    Citation F0657

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0657 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Develop the complete care plan within 7 days of the comprehensive assessment; and prepared, reviewed, and revised by a team of health professionals. The deficiency was recorded as corrected on 2025-08-11. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · D

    Citation F0761

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0761 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for 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. The deficiency was recorded as corrected on 2025-08-11. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · E

    Citation F0604

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0604 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Ensure that each resident is free from the use of physical restraints, unless needed for medical treatment. The deficiency was recorded as corrected on 2025-08-11. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · E

    Citation F0812

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0812 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Procure food from sources approved or considered satisfactory and store, prepare, distribute and serve food in accordance with professional standards. The deficiency was recorded as corrected on 2025-08-01. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · E

    Citation F0641

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0641 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Ensure each resident receives an accurate assessment. The deficiency was recorded as corrected on 2025-08-12. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · E

    Citation F0656

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0656 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured. The deficiency was recorded as corrected on 2025-08-11. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · E

    Citation F0684

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0684 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Provide appropriate treatment and care according to orders, resident’s preferences and goals. The deficiency was recorded as corrected on 2025-07-29. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · D

    Citation F0732

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0732 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for Post nurse staffing information every day. The deficiency was recorded as corrected on 2025-08-01. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · F

    Citation F0700

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0700 (CMS scope/severity F: widespread, no actual harm, potential for more than minimal harm) for 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. The deficiency was recorded as corrected on 2025-08-11. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · D

    Citation F0730

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0730 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for Observe each nurse aide's job performance and give regular training. The deficiency was recorded as corrected on 2025-08-12. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • July 28, 2025 · E

    Citation F0605

    Federal surveyors cited this nursing home on 2025-07-28 under CMS tag F0605 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Prevent the use of unnecessary psychotropic medications or use medications that may restrain a resident's ability to function. The deficiency was recorded as corrected on 2025-08-11. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2025-07-28.GOV
  • April 22, 2024 · F

    Citation F0883

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0883 (CMS scope/severity F: widespread, no actual harm, potential for more than minimal harm) for Develop and implement policies and procedures for flu and pneumonia vaccinations. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · E

    Citation F0641

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0641 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Ensure each resident receives an accurate assessment. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · D

    Citation F0758

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0758 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for 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…. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · D

    Citation F0695

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0695 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for Provide safe and appropriate respiratory care for a resident when needed. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · D

    Citation F0711

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0711 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for Ensure the resident's doctor reviews the resident's care, writes, signs and dates progress notes and orders, at each required visit. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · E

    Citation F0727

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0727 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for 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. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · E

    Citation F0604

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0604 (CMS scope/severity E: pattern, no actual harm, potential for more than minimal harm) for Ensure that each resident is free from the use of physical restraints, unless needed for medical treatment. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · D

    Citation F0761

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0761 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for 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. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV
  • April 22, 2024 · D

    Citation F0656

    Federal surveyors cited this nursing home on 2024-04-22 under CMS tag F0656 (CMS scope/severity D: isolated, no actual harm, potential for more than minimal harm) for Develop and implement a complete care plan that meets all the resident's needs, with timetables and actions that can be measured. The deficiency was recorded as corrected on 2024-05-09. Source: CMS Care Compare Health Deficiencies (as of 2026-06-01).

    View original record (opens in a new tab)Source: CMS Care Compare · Updated 2024-04-22.GOV

Penalties

Total fines on file: $0

Staffing

Latest: 6.04 nurse staffing hours per resident per day (2026Q1)

Staffing trend (5 periods)

  1. 2025Q46.12 hrs/resident/day
  2. 2026-06-016.12 hrs/resident/day
  3. 2026-07-016.04 hrs/resident/day
  4. 2026-08-016.04 hrs/resident/day
  5. 2026Q16.04 hrs/resident/day

Most recent period is lower than 2025Q4 (-0.08 hrs/resident/day). Figures are CMS-reported nurse staffing hours, not our estimate.

Ownership

Non profit - Corporation

Recent changes to this listing

Watch this facility: new record changes publish to an RSS feed any feed reader can follow. No signup.

Each line is a difference between two readings of a government file. It says what the source reported, not what the provider did.

  1. Sep 2, 2026Listed capacity changed

    Listed capacity changed from 30 to 77 beds.

    Reported by California RCFE

  2. Aug 4, 2026Listed capacity changed

    Listed capacity changed from 77 to 30 beds.

    Reported by CMS nursing homes (provider info)

  3. Jul 26, 2026Listed capacity changed

    Listed capacity changed from 30 to 77 beds.

    Reported by California RCFE

  4. Jul 23, 2026First appeared in our data

    This listing first appeared in the government file we read. That is usually when it entered the file, not the day it opened.

    Reported by CMS nursing homes (provider info)

Ratings, inspections, and penalties are public records, reproduced in plain English without edits to their substance. View source records · What these measures mean.

Typical cost

Genworth CareScout Cost of Care Survey · 2025

This provider doesn't publish a specific price to us. Below is the typical CA range for the care type(s) it offers. Use it as context, not a quote.

Assisted Living

Median · CA$7,000/mo
See full CA cost breakdownSource: Genworth CareScout Cost of Care Survey · Updated 2025

Nursing Homes

Median · CA$12,167/mo
See full CA cost breakdownSource: Genworth CareScout Cost of Care Survey · Updated 2025

Nearby alternatives

Other licensed providers in Mountain View, with their own public records.

Compare side by side
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A comparison puts both public records in one view and marks any measure the two are not held to alike, so a blank never reads as a bad score.

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

Check availability and pricing at Villa Siena

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Trust & methodology

Where this information came from

Each block below is one file we read, the date on that file, and the fields on this page that came from it. The date is when the source published or we retrieved it, not the day we last looked at this listing.

California RCFEas of September 2026
Care types, City, County, License lookup link, License number, License status, Licensed capacity, Licensing state, Name, Phone number, State, Street address, ZIP code
Nppesas of July 2026
NPI
CMS nursing homes (provider info)as of July 2026
Chain identifier, Chain name, CMS Special Focus status, Map location, Medicare certification number, Ownership type
CMS nursing homes (payroll-based journal staffing)as of June 2026
Staffing hours per resident day

Read how we handle every file on the data sources page.