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DR. MARIA VASILYADIS
NPI 1659565836
Emergency Medicine in Seattle, WA

Active since August 30, 2007PECOS EnrolledAccepts Medicare Assignment
925 SENECA ST, SEATTLE, WA 98101(206) 583-6433 Get Directions Write a Review

NPPES record last updated: December 28, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Maria Vasilyadis NPPES

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

DR. MARIA VASILYADIS (NPI 1659565836) is an individual emergency medicine provider in Seattle, Washington, licensed in Washington (MD60099731) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with Virginia Mason Medical Center, and is a graduate of Other (2004).

NPPES Registry Identity

NPI1659565836
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. MARIA VASILYADIS
Location Address925 SENECA STSeattle, WA 98101-2742
Mailing Address1100 9th AveSeattle, WA 98101-2756 · (206) 515-5811
Phone(206) 583-6433
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateAugust 30, 2007
Last NPPES UpdateDecember 28, 2009
✔ NPI 1659565836 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in WA · MD60099731
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 245281 (NY)
925 SENECA ST, Seattle, WA 98101
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Other Identifiers 2

Medicare PING8884306WA
Medicaid8553638WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Maria Vasilyadis is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113094145
PECOS Enrollment IDI20090930000351
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
98 services95 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
39 services38 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
14 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Virginia Mason Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500005
Location925 Seneca StSeattle, WA 98101 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Maria Vasilyadis's NPI number?

The NPI number for Maria Vasilyadis is 1659565836. It was assigned to this individual provider in the NPPES registry on August 30, 2007.

Where is Maria Vasilyadis located?

Maria Vasilyadis practices at 925 Seneca St, Seattle, WA 98101. The listed phone number is (206) 583-6433.

What is Maria Vasilyadis's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Maria Vasilyadis enrolled in Medicare?

Yes. Maria Vasilyadis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Maria Vasilyadis accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Maria Vasilyadis 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.

Is Maria Vasilyadis affiliated with any hospitals?

According to CMS data, Maria Vasilyadis is affiliated with Virginia Mason Medical Center.

When was this NPI record last updated?

The NPPES record for Maria Vasilyadis was last updated on December 28, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.