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VILLA SIENA
NPI 1730183724
Assisted Living Facility in Mountain View, CA

Active since June 08, 2005
4/5
Overall Rating
1855 MIRAMONTE AVE, MOUNTAIN VIEW, CA 94040(650) 961-6484(650) 961-6254 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

About Villa Siena NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

VILLA SIENA (NPI 1730183724) is a healthcare organization registered as an assisted living facility in Mountain View, California and active in the NPI registry since June 2005. The organization lists Corine Bernard, Executive Director, as its authorized official.

NPPES Registry Identity

NPI1730183724
Entity TypeOrganization
Primary Taxonomy310400000X
Legal Business NameVILLA SIENA
Location Address1855 MIRAMONTE AVEMountain View, CA 94040-4029
Mailing Address1855 Miramonte AveMountain View, CA 94040-4029 · (650) 961-6484 · Fax (650) 961-6254
Phone(650) 961-6484
Fax(650) 961-6254
Organization SubpartNo
Authorized OfficialCorine BernardExecutive Director · (650) 961-6484
Enumeration DateJune 8, 2005
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
✔ NPI 1730183724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAssisted Living FacilityNursing & Custodial Care Facilities
Taxonomy Code310400000X
Definition
A facility providing supportive services to individuals who can function independently in most areas of activity, but need assistance and/or monitoring to assure safety and well being.
Also ListedSkilled Nursing FacilityTaxonomy 314000000X

Other Identifiers 1

MedicaidLTC90003GCA

Nursing Home Quality Ratings CMS Care Compare

Quality ratings, staffing and inspection history for Villa Siena (CMS certification number 05A364), from CMS Care Compare.

Villa Siena

Nursing home · Mountain View, CA
4/5 CMS Overall Rating
OwnershipNon profit - Corporation
CMS Certification Number05A364
Certified Beds30 beds28 residents per day on average
Medicare & Medicaid Participant SinceSeptember 3, 1986
Resident & Family CouncilResident council
Automatic sprinkler system

CMS Star Ratings

Quality Measures
Based on a select set of clinical quality measures.
2/5
Long-Stay Quality
Quality of care delivered to long-term residents.
2/5
Staffing
Based on nursing staff hours relative to resident needs.
4/5
Weighted Health Inspection Score
Lower scores are better; the score summarizes deficiencies found on recent inspections.
61.33
Ratings are assigned by CMS on a one-to-five star scale; five is the highest. Categories without a current CMS rating are not shown.

Staffing & Turnover

Total Nurse Staffing
nurse aide 3.56 · LPN 1.75 · RN 0.33
5.65 hrs per resident per day
Weekend Nurse Staffing
5.04 hrs per resident per day
Physical Therapist Staffing
0 hrs per resident per day
Nursing Staff Turnover
Share of nursing staff who left the facility within the past year.
8.8%
Administrators Who Have Left
In the past year.
0
Higher staffing hours generally allow more direct care time per resident.

Inspections & Enforcement

Facility-Reported Incidents
2
Substantiated Complaints
0
Fines
1 totaling $657.80
Medicare Payment Denials
0
Total Penalties
1
Counts come from CMS inspections and complaint investigations over approximately the past three years. CMS Care Compare data as of October 1, 2024.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VILLA
Assisted Living Facility
1855 MIRAMONTE AVE
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 961-6484
MOHANAMBAL PALANISAMY
Physical Therapist
1855 MIRAMONTE AVE
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 961-6484

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Villa Siena's NPI number?

The NPI number for Villa Siena is 1730183724. It was assigned to this organization in the NPPES registry on June 8, 2005.

Where is Villa Siena located?

Villa Siena is located at 1855 Miramonte Ave, Mountain View, CA 94040. The listed phone number is (650) 961-6484.

What is Villa Siena's specialty?

The primary specialty registered for this NPI is Assisted Living Facility with taxonomy code 310400000X.

Is Villa Siena a Medicare-certified nursing home?

Yes. Villa Siena is a Medicare-certified nursing home with 30 certified beds.

What quality rating does Villa Siena have?

CMS rates Villa Siena 4 out of 5 stars overall on Care Compare. The full measure detail is in the Nursing Home Quality Ratings section above.

When was this NPI record last updated?

The NPPES record for Villa Siena was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.