ROUMEN KIRILOV IVANOV MD
NPI 1942378021
Internal Medicine in Seattle, WA
About Roumen Kirilov Ivanov Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROUMEN KIRILOV IVANOV MD (NPI 1942378021) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD00041865) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Overlake Hospital Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
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
Roumen Kirilov Ivanov Md 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 Reassignments
3Medicare enrollment records show Roumen Ivanov reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98109
- Reassigned Medicare billing, Washington enrollment
- 2,678 clinicians in this Medicare group
Seattle, WA 98109
- Reassigned Medicare billing, Washington enrollment
- 915 clinicians in this Medicare group
Kent, WA 98030
- Reassigned Medicare billing, Washington enrollment
- 4,383 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Overlake Hospital Medical Center
Acute Care Hospitals · Bellevue, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98122 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98122
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 Roumen Ivanov's NPI number?
The NPI number for Roumen Ivanov is 1942378021. It was assigned to this individual provider in the NPPES registry on November 30, 2006.
Where is Roumen Ivanov located?
Roumen Ivanov practices at 747 Broadway, Seattle, WA 98122. The listed phone number is (206) 215-2520.
What is Roumen Ivanov's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Roumen Ivanov enrolled in Medicare?
Yes. Roumen Ivanov 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 organizations bill Medicare for Roumen Ivanov's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Roumen Ivanov reassigns Medicare benefits to 3 organizations: Kaiser Foundation Health Plan Of Washington (Seattle, WA), South Sound Inpatient Physicians PLLC (Seattle, WA) and Multicare Health System (Kent, WA). Each 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 Roumen Ivanov's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Roumen Ivanov affiliated with any hospitals?
According to CMS data, Roumen Ivanov is affiliated with Overlake Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Roumen Ivanov was last updated on April 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Roumen Kirilov Ivanov, MD · NPI 1942378021
Internal Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since November 30, 2006.
## Identity
- **NPI:** 1942378021 (Entity type: Individual)
- **Enumerated:** November 30, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD00041865 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 747 BROADWAY, Seattle, WA 98122
- **Phone:** (206) 215-2520 · **Fax:** (206) 386-3180
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of Washington (NPI 1396810701, Seattle, WA); South Sound Inpatient Physicians PLLC (NPI 1699917369, Seattle, WA); Multicare Health System (NPI 1811949928, Kent, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1986
## Record status
- **NPPES last updated:** April 28, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1942378021) · Data from the CMS NPPES public registry.