PETER I TSAI M.D.
NPI 1265684583
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Honolulu, HI
About Peter I Tsai M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PETER I TSAI M.D. (NPI 1265684583) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Honolulu, Hawaii, licensed in Hawaii (MD19918) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, is affiliated with The Queens Medical Center, and is a graduate of University Of Southern California Keck School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
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
Peter I Tsai M.d. 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
5Medicare enrollment records show Peter Tsai reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Honolulu, HI 96813
- Reassigned Medicare billing, Hawaii enrollment
- 859 clinicians in this Medicare group
Honolulu, HI 96813
- Reassigned Medicare billing, Hawaii enrollment
- Medicare enrollment name: The Queens Medical Center
- 809 clinicians in this Medicare group
Honolulu, HI 96819
- Reassigned Medicare billing, Hawaii enrollment
- 1,187 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,296 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,554 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 6
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.
The Queens Medical Center
Acute Care Hospitals · Honolulu, HIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 96813 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HONOLULU, HI 96813
HONOLULU, HI 96813
HONOLULU, HI 96813
HONOLULU, HI 96813
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 Peter Tsai's NPI number?
The NPI number for Peter Tsai is 1265684583. It was assigned to this individual provider in the NPPES registry on October 17, 2008.
Where is Peter Tsai located?
Peter Tsai practices at 550 S Beretania St Ste 702, Honolulu, HI 96813. The listed phone number is (808) 691-8852.
What is Peter Tsai's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Peter Tsai enrolled in Medicare?
Yes. Peter Tsai 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 Peter Tsai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Tsai reassigns Medicare benefits to 5 organizations: Queens University Medical Group (Honolulu, HI), The Queen's Medical Center (Honolulu, HI), Hawaii Permanente Medical Group Inc (Honolulu, HI), Baylor College Of Medicine (Houston, TX) and Baylor College Of Medicine (Houston, TX). 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 Peter Tsai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Peter Tsai accept?
Health plans from HMSA and Kaiser Permanente list Peter Tsai 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 Peter Tsai affiliated with any hospitals?
According to CMS data, Peter Tsai is affiliated with The Queens Medical Center.
When was this NPI record last updated?
The NPPES record for Peter Tsai was last updated on November 2, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.