HEE YON SOHNG MD
NPI 1811212376
Internal Medicine in Seattle, WA
About Hee Yon Sohng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HEE YON SOHNG MD (NPI 1811212376) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD60302334) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Hee Yon Sohng Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Hee Yon Sohng reassigns Medicare billing to 2 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
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 1,285 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98112 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.
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 Hee Yon Sohng's NPI number?
The NPI number for Hee Yon Sohng is 1811212376. It was assigned to this individual provider in the NPPES registry on March 28, 2010.
Where is Hee Yon Sohng located?
Hee Yon Sohng practices at 125 16th Ave E, Seattle, WA 98112. The listed phone number is (206) 326-3000.
What is Hee Yon Sohng's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Hee Yon Sohng enrolled in Medicare?
Yes. Hee Yon Sohng is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Hee Yon Sohng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hee Yon Sohng reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of Washington (Seattle, WA) and Optum Care Washington PLLC (Everett, 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 Hee Yon Sohng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Hee Yon Sohng was last updated on May 6, 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.
# Hee Yon Sohng, MD · NPI 1811212376
Internal Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since March 28, 2010.
## Identity
- **NPI:** 1811212376 (Entity type: Individual)
- **Enumerated:** March 28, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD60302334 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 125 16TH AVE E, Seattle, WA 98112-5211
- **Phone:** (206) 326-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of Washington (NPI 1396810701, Seattle, WA); Optum Care Washington PLLC (NPI 1831186766, Everett, WA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 6, 2021
- **Other identifiers:** Medicaid 2019135 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1811212376) · Data from the CMS NPPES public registry.