DIANA SZILVASI DNP, ARNP, FNP-C
NPI 1891518858
Nurse Practitioner - Family in Bellevue, WA
About Diana Szilvasi Dnp, Arnp, Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA SZILVASI DNP, ARNP, FNP-C (NPI 1891518858) is an individual family provider in Bellevue, Washington, licensed in Washington (AP61599561) and active in the NPI registry since November 2024. She is enrolled in Medicare PECOS, is affiliated with Overlake Hospital Medical Center, and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Diana Szilvasi Dnp, Arnp, Fnp-c 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.
Medicare Billing Reassignment
Medicare enrollment records show Diana Szilvasi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bellevue, WA 98004
- Reassigned Medicare billing, Washington enrollment
- 9 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Overlake Hospital Medical Center
Acute Care Hospitals · Bellevue, WAEvergreenhealth Medical Center
Acute Care Hospitals · Kirkland, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98004 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Diana Szilvasi's NPI number?
The NPI number for Diana Szilvasi is 1891518858. It was assigned to this individual provider in the NPPES registry on November 6, 2024.
Where is Diana Szilvasi located?
Diana Szilvasi practices at 2100 116th Ave NE, Bellevue, WA 98004. The listed phone number is (425) 453-0766.
What is Diana Szilvasi's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Diana Szilvasi enrolled in Medicare?
Yes. Diana Szilvasi 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.
Which organization bills Medicare for Diana Szilvasi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Szilvasi reassigns Medicare benefits to Overlake Arthritis And Osteoporosis Center, PLLC (Bellevue, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Szilvasi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diana Szilvasi accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Diana Szilvasi 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 Diana Szilvasi affiliated with any hospitals?
According to CMS data, Diana Szilvasi is affiliated with Overlake Hospital Medical Center and Evergreenhealth Medical Center.
When was this NPI record last updated?
The NPPES record for Diana Szilvasi was last updated on July 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Diana Szilvasi, DNP, ARNP, FNP-C · NPI 1891518858
Family physician in Bellevue, Washington. Individual provider, active in the CMS NPPES registry since November 6, 2024.
## Identity
- **NPI:** 1891518858 (Entity type: Individual)
- **Enumerated:** November 6, 2024
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** AP61599561 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2100 116TH AVE NE, Bellevue, WA 98004-3016
- **Phone:** (425) 453-0766
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Overlake Arthritis And Osteoporosis Center, PLLC (NPI 1174583728, Bellevue, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** July 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1891518858) · Data from the CMS NPPES public registry.