MICHAEL S MULLIGAN MD
NPI 1003991811
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Seattle, WA
About Michael S Mulligan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL S MULLIGAN MD (NPI 1003991811) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Seattle, Washington, licensed in Washington (MD00037791) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and maintains a secondary practice location in Renton.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 4
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
Michael S Mulligan 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
2Medicare enrollment records show Michael Mulligan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 clinicians in this Medicare group
Renton, WA 98055
- Reassigned Medicare billing, Washington enrollment
- 689 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Washington Medical Ctr
Acute Care Hospitals · Seattle, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98195 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 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
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 Michael Mulligan's NPI number?
The NPI number for Michael Mulligan is 1003991811. It was assigned to this individual provider in the NPPES registry on October 27, 2006.
Where is Michael Mulligan located?
Michael Mulligan practices at 1959 NE Pacific St, Seattle, WA 98195. The listed phone number is (206) 598-1980.
What is Michael Mulligan's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Michael Mulligan enrolled in Medicare?
Yes. Michael Mulligan 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 Michael Mulligan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Mulligan reassigns Medicare benefits to 2 organizations: The Association Of University Physicians (Seattle, WA) and Valley Medical Group-Renton (Renton, 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 Michael Mulligan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Mulligan accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Michael Mulligan 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 Michael Mulligan affiliated with any hospitals?
According to CMS data, Michael Mulligan is affiliated with University Of Washington Medical Ctr.
When was this NPI record last updated?
The NPPES record for Michael Mulligan was last updated on June 11, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Michael S Mulligan, MD · NPI 1003991811
Thoracic Surgery (Cardiothoracic Vascular Surgery) physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since October 27, 2006.
## Identity
- **NPI:** 1003991811 (Entity type: Individual)
- **Enumerated:** October 27, 2006
- **Primary specialty:** Thoracic Surgery (Cardiothoracic Vascular Surgery) · taxonomy 208G00000X
- **State license:** MD00037791 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1959 NE PACIFIC ST, Seattle, WA 98195-5791
- **Phone:** (206) 598-1980
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): The Association Of University Physicians (NPI 1023041159, Seattle, WA); Valley Medical Group-Renton (NPI 1619209574, Renton, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** June 11, 2020
- **Other identifiers:** Other 252490; Other 0231621 (WA); Medicaid 1000239 (WA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1003991811) · Data from the CMS NPPES public registry.