SIHOUN HAHN MD, PHD
NPI 1538109558
Medical Genetics - Clinical Biochemical Genetics in Seattle, WA
About Sihoun Hahn Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIHOUN HAHN MD, PHD (NPI 1538109558) is an individual clinical biochemical genetics provider in Seattle, Washington, licensed in Washington (MD00047081) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1983).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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
Sihoun Hahn Md, Phd 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 Sihoun Hahn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Seattle, WA 98105
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: The Association Of Chrmc And University Physicians
- 1,443 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.
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 98105
SEATTLE, WA 98105
SEATTLE, WA 98105
SEATTLE, WA 98105
SEATTLE, WA 98105
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 Sihoun Hahn's NPI number?
The NPI number for Sihoun Hahn is 1538109558. It was assigned to this individual provider in the NPPES registry on June 7, 2006.
Where is Sihoun Hahn located?
Sihoun Hahn practices at 4800 Sand Point Way NE M/S B-6594, Seattle, WA 98105. The listed phone number is (206) 987-3012.
What is Sihoun Hahn's specialty?
The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Biochemical Genetics, with taxonomy code 207SG0202X.
Is Sihoun Hahn enrolled in Medicare?
Yes. Sihoun Hahn 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 Sihoun Hahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sihoun Hahn reassigns Medicare benefits to Association Of Chmc And University Physicians (Seattle, 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 Sihoun Hahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sihoun Hahn accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Sihoun Hahn 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 Sihoun Hahn was last updated on March 2, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Sihoun Hahn, MD, PHD · NPI 1538109558
Clinical Biochemical Genetics physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since June 7, 2006.
## Identity
- **NPI:** 1538109558 (Entity type: Individual)
- **Enumerated:** June 7, 2006
- **Primary specialty:** Medical Genetics - Clinical Biochemical Genetics · taxonomy 207SG0202X
- **State license:** MD00047081 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4800 SAND POINT WAY NE, M/S B-6594, Seattle, WA 98105-3901
- **Phone:** (206) 987-3012 · **Fax:** (206) 987-5329
## 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:** Association Of Chmc And University Physicians (NPI 1649497827, Seattle, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1983
## Record status
- **NPPES last updated:** March 2, 2011
- **Other identifiers:** Medicare UPIN I00828; Medicare PIN 8863277 (WA); Medicaid 8462368 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1538109558) · Data from the CMS NPPES public registry.