TIMOTHY JAMES DAEEUN OHLSEN MD
NPI 1578094868
Pediatrics - Pediatric Hematology-Oncology in Seattle, WA
About Timothy James Daeeun Ohlsen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY JAMES DAEEUN OHLSEN MD (NPI 1578094868) is an individual pediatric hematology-oncology provider in Seattle, Washington, licensed in Washington (MD61050756) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Timothy James Daeeun Ohlsen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Timothy Ohlsen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
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
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 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
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 Timothy Ohlsen's NPI number?
The NPI number for Timothy Ohlsen is 1578094868. It was assigned to this individual provider in the NPPES registry on March 27, 2017.
Where is Timothy Ohlsen located?
Timothy Ohlsen practices at 4800 Sand Point Way NE, Seattle, WA 98105. The listed phone number is (206) 987-2000.
What is Timothy Ohlsen's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Timothy Ohlsen enrolled in Medicare?
Yes. Timothy Ohlsen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Timothy Ohlsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Ohlsen reassigns Medicare benefits to 2 organizations: Association Of Chmc And University Physicians (Seattle, WA) and The Association Of University Physicians (Seattle, 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 Timothy Ohlsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Ohlsen accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Timothy Ohlsen 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 Timothy Ohlsen was last updated on May 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Timothy James Daeeun Ohlsen, MD · NPI 1578094868
Pediatric Hematology-Oncology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since March 27, 2017.
## Identity
- **NPI:** 1578094868 (Entity type: Individual)
- **Enumerated:** March 27, 2017
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** MD61050756 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4800 SAND POINT WAY NE, Seattle, WA 98105-3901
- **Phone:** (206) 987-2000
## 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): Association Of Chmc And University Physicians (NPI 1649497827, Seattle, WA); The Association Of University Physicians (NPI 1023041159, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 24, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1578094868) · Data from the CMS NPPES public registry.