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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

VIRGINIA MASON MEDICAL CENTER
NPI 1801851258
General Acute Care Hospital in Seattle, WA

Active since April 19, 2006
5/5
Hospital Overall Rating
925 SENECA ST, SEATTLE, WA 98101(206) 223-6600 Get Directions Write a Review

NPPES record last updated: August 20, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Aug 20, 2026, Aug 7, 2024, Apr 16, 2024 and 2 more (5 updates tracked since 2021).

About Virginia Mason Medical Center NPPES

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

VIRGINIA MASON MEDICAL CENTER (NPI 1801851258) is a healthcare organization registered as a general acute care hospital in Seattle, Washington and active in the NPI registry since April 2006. The organization lists Monica Hilt, President, Vmmc Administration, as its authorized official.

NPPES Registry Identity

NPI1801851258
Entity TypeOrganization
Primary Taxonomy282N00000X
Legal Business NameVIRGINIA MASON MEDICAL CENTER
Location Address925 SENECA STSeattle, WA 98101-2742
Mailing AddressPo Box 741515Los Angeles, CA 90074-1515 · (206) 515-5811 · Fax (206) 341-0274
Phone(206) 223-6600
Organization SubpartNo
Authorized OfficialMonica HiltPresident, Vmmc Administration · (206) 341-1208
Enumeration DateApril 19, 2006
Last NPPES UpdateAugust 20, 20265 updates tracked since enumeration
NPPES CertifiedAugust 20, 2026
✔ NPI 1801851258 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyGeneral Acute Care HospitalHospitals
Taxonomy Code282N00000X
License✔ Licensed in WA · H-010
Definition
An acute general hospital is an institution whose primary function is to provide inpatient diagnostic and therapeutic services for a variety of medical conditions, both surgical and non-surgical, to a wide population group. The hospital treats patients in an acute phase of illness or injury, characterized by a single episode or a fairly short duration, from which the patient returns to his or her normal or previous level of activity.
Also ListedClinic/CenterTaxonomy 261Q00000X · License H-010 (WA)
925 SENECA ST, Seattle, WA 98101
Open in Google Maps ↗

Other Identifiers 1

Medicaid3315009WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Hospital Quality Ratings CMS Care Compare

Quality and patient-experience ratings for Virginia Mason Medical Center (CMS certification number 500005), from CMS Care Compare.

Virginia Mason Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS Overall Rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500005
Location925 Seneca StSeattle, WA 98101 · King County · (206) 223-6600
Emergency services Birthing friendly Meaningful use of EHRs

Patient Experience

HCAHPS patient survey · Jan 2023 – Dec 2023
4/5 summary rating
Nurse communication
3/5
Doctor communication
4/5
Staff responsiveness
3/5
Communication about medicines
4/5
Discharge information
4/5
Care transition
4/5
Cleanliness
2/5
Quietness
3/5
Overall hospital rating
3/5
Recommend hospital
4/5
Star ratings summarize responses from patients surveyed after discharge, collected through the CMS HCAHPS program.

Complications & Deaths 19

CMS Medicare PSI 90: Patient safety and adverse events composite
0.78 Better than the national benchmark
Abdominopelvic accidental puncture or laceration rate
1.23 No different than national
Postoperative wound dehiscence rate
1.70 No different than national
Postoperative sepsis rate
4.78 No different than national
Perioperative pulmonary embolism or deep vein thrombosis rate
2.75 No different than national
Postoperative respiratory failure rate
7.37 No different than national

Infections 6

Clostridium Difficile (C.Diff)
10 observed cases · 27.707 predicted · 66,522 patient days
0.361 Better than the national benchmark
MRSA Bacteremia
1 observed case · 4.507 predicted · 67,423 patient days
0.222 No different than national
SSI - Abdominal Hysterectomy
0 observed cases · 1.249 predicted · 166 patient days
0.000 No different than national
SSI - Colon Surgery
6 observed cases · 8.023 predicted · 321 patient days
0.748 No different than national
Catheter Associated Urinary Tract Infections (ICU + select Wards)
2 observed cases · 18.4 predicted · 15,144 patient days
0.109 Better than the national benchmark
Central Line Associated Bloodstream Infection (ICU + select Wards)
10 observed cases · 15.123 predicted · 14,779 patient days
0.661 No different than national

Unplanned Hospital Visits 14

Pneumonia (PN) 30-Day Readmission Rate
209 No different than national
Rate of readmission after discharge from hospital (hospital-wide)
2915 No different than national
Rate of readmission after hip/knee replacement
385 No different than national
Heart failure (HF) 30-Day Readmission Rate
405 No different than national
Rate of readmission for chronic obstructive pulmonary disease (COPD) patients
81 No different than national
Rate of readmission for CABG
167 No different than national

Timely & Effective Care 15

Severe Sepsis 6-Hour Bundle
95%
Severe Sepsis 3-Hour Bundle
90%
Septic Shock 6-Hour Bundle
83%
Septic Shock 3-Hour Bundle
76%
Appropriate care for severe sepsis and septic shock
73%
Safe Use of Opioids - Concurrent Prescribing
15%

Maternal Health 3

Maternal Morbidity Structural Measure
Yes
Exclusive Breast Milk Feeding
441
Elective Delivery
34%

Other Providers at the Same Location NPPES 20

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

STEPHEN A LOPEZ MD
Hospitalist
925 SENECA ST
SEATTLE, WA 98101
King County (206) 341-0860
DR. STEPHEN RAMON MD
Student in an Organized Health Care Education/Training Program
925 SENECA ST
SEATTLE, WA 98101
King County (206) 583-6079
JARED JOHN BASSMANN
Student in an Organized Health Care Education/Training Program
925 SENECA ST
SEATTLE, WA 98101
King County (206) 223-6772
YORDANOS T KAHSAI M.D.
Hospitalist
925 SENECA ST
SEATTLE, WA 98101
King County (206) 624-1144
RHADIKA MCCORMICK SOUZA MD
Emergency Medicine
925 SENECA ST
SEATTLE, WA 98101
King County (206) 583-6433
IRINA KUSHNIR M.D.
Hospitalist
925 SENECA ST
SEATTLE, WA 98101
King County (206) 341-1401
JENNA LEE MALIGRO MD
Student in an Organized Health Care Education/Training Program
925 SENECA ST, MAIL STOP: H8-GME
SEATTLE, WA 98101
King County (206) 583-6079
THOMAS HOY PEREZ
Student in an Organized Health Care Education/Training Program
925 SENECA ST
SEATTLE, WA 98101
King County (408) 832-4749

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 Virginia Mason Medical Center's NPI number?

The NPI number for Virginia Mason Medical Center is 1801851258. It was assigned to this organization in the NPPES registry on April 19, 2006.

Where is Virginia Mason Medical Center located?

Virginia Mason Medical Center is located at 925 Seneca St, Seattle, WA 98101. The listed phone number is (206) 223-6600.

What is Virginia Mason Medical Center's specialty?

The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.

Is Virginia Mason Medical Center a Medicare-certified hospital?

Yes. Virginia Mason Medical Center is a Medicare-certified hospital (Acute Care Hospitals). The hospital provides emergency services.

What quality rating does Virginia Mason Medical Center have?

CMS rates Virginia Mason Medical Center 5 out of 5 stars overall on Care Compare, based on measures of safety, patient experience and outcomes. The full measure detail is in the Hospital Quality Ratings section above.

What insurance does Virginia Mason Medical Center accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Virginia Mason Medical Center as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Virginia Mason Medical Center was last updated on August 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 days 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.