TIEN THACH MD
NPI 1013099530
Anesthesiology in Seattle, WA
About Tien Thach Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIEN THACH MD (NPI 1013099530) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (MD 60147196) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, is affiliated with Sartori Memorial Hospital, Inc, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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 and accepts Medicare assignment
Tien Thach 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 Tien Thach reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kingsley, IA 51028
- Reassigned Medicare billing, Iowa enrollment
- 1,506 clinicians in this Medicare group
Waterloo, IA 50702
- Reassigned Medicare billing, Iowa enrollment
- 271 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sartori Memorial Hospital, Inc
Acute Care Hospitals · Cedar Falls, IAMercyone Waterloo Medical Center
Acute Care Hospitals · Waterloo, IAOther 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 Tien Thach's NPI number?
The NPI number for Tien Thach is 1013099530. It was assigned to this individual provider in the NPPES registry on October 20, 2006.
Where is Tien Thach located?
Tien Thach practices at 1100 9th Ave, Seattle, WA 98101. The listed phone number is (206) 223-6980.
What is Tien Thach's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Tien Thach enrolled in Medicare?
Yes. Tien Thach 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 Tien Thach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tien Thach reassigns Medicare benefits to 2 organizations: Iowa Physicians Clinic Medical Foundation (Kingsley, IA) and Covenant Medical Center Inc (Waterloo, IA). 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 Tien Thach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tien Thach accept?
Health plans from Wellmark Health Plan of Iowa, Inc. list Tien Thach 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 Tien Thach affiliated with any hospitals?
According to CMS data, Tien Thach is affiliated with Sartori Memorial Hospital, Inc and Mercyone Waterloo Medical Center.
When was this NPI record last updated?
The NPPES record for Tien Thach was last updated on April 13, 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.
# Tien Thach, MD · NPI 1013099530
Anesthesiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since October 20, 2006.
## Identity
- **NPI:** 1013099530 (Entity type: Individual)
- **Enumerated:** October 20, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD 60147196 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1100 9TH AVE, Seattle, WA 98101-2756
- **Phone:** (206) 223-6980 · **Fax:** (206) 223-6982
## 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): Iowa Physicians Clinic Medical Foundation (NPI 1659263523, Kingsley, IA); Covenant Medical Center Inc (NPI 1528009545, Waterloo, IA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** April 13, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1013099530) · Data from the CMS NPPES public registry.