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Dr. Tien Thach , MD

Anesthesiology • Seattle, WA

Active NPI 1013099530 Individual Practitioner Female Practitioner Accepts Medicare assignment
Practice location in NPPES

1100 9th Ave
Seattle, WA 981012756

Call 2062236980 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1100 9th Ave

Seattle, WA 981012756

Telephone 2062236980
Fax 2062236982
Organization at the Same NPPES Address or Phone
Virginia Mason Medical Center Facility NPI 1376607234

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 2 distinct additional practice-address records in Bellevue, WA; Colorado Springs, CO. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Covenant Medical Center Inc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

University Of Washington School Of Medicine

Graduation Year

2006

Medicare-allowed amount

About $8,336 in 2023

The total amount Medicare approved for these services in 2023. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023.

Paid by Medicare

About $6,616 in 2023

The part of the Medicare-allowed amount that Medicare itself paid in 2023, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $13.30 in 2019

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2019.

Guide: How to read an Open Payments record

Years since graduation

20 years (graduated 2006)

CMS Doctors and Clinicians data list 2006 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Thach has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Thach as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Seattle and Washington

Billing and prescribing volume is not a quality rating.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Dr. Thach are from 2023.

694 active clinicians are listed under Anesthesiology with a practice address in Seattle, WA (1,701 in Washington).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Seattle

1.6% of these 694 clinicians have the CMS telehealth indicator.

69% of these 694 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2023), CMS Open Payments (2019), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2019

Program year 2019 (payments made January 1 – December 31, 2019): fewer than 11 records totaling $13.30.

Manufacturer Payment Nature Product Type Amount ($)
Merck Sharp & Dohme Corporation
Food and Beverage
In-kind items and services
BRIDION General $13.30

Source: CMS Open Payments, program year 2019, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2023.

CMS Part B · Data Year 2023
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2022 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2019–2023; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin
26 26 $132.00 $41.21
00410 Anesthesia for procedure to correct abnormal heart rhythm
14 13 $550.57 $87.86
00350 Anesthesia for other procedure on large blood vessel of neck
13 13 $1646.31 $363.11
00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
11 11 $603.82 $119.45

Source: CMS Part B by Provider and Service, 2023; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2020-04-13
Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

License # reported to NPPES WA MD 60147196

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Anesthesiology

NUCC Taxonomy Code: 207L00000X

License # reported to NPPES IL 18826

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Anesthesiology

NUCC Taxonomy Code: 207L00000X

License # reported to NPPES CO CDR.0000282

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES WA ML20008755

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Washington State Department of Health Provider Lookup.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ANESTHESIOLOGY

Medicare Enrollment ID

I20190919002366

Enrollment State Jurisdiction

IA

PECOS Control ID

3173719846

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Covenant Medical Center Inc

3421 W 9th St, Waterloo, IA 507025401

Phone: 3192727050

Secondary Practice Locations

1035 116th Ave Ne

Bellevue, WA 980044604

Phone: 2062401879

1035 116th Ave Ne

Bellevue, WA 980044604

Phone: 2062401879

1400 E Boulder St Ste 2508

Colorado Springs, CO 80909

Phone: 7193656999

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

40 listed
Ava Alamdari , BMBS

Anesthesiology

NPI 1649513623
Jessica Alleman , CRNA

Nurse Anesthetist, Certified Registered

NPI 1255901484

Certified Registered Nurse Anesthetist

Julia Anderson , CRNA

Nurse Anesthetist, Certified Registered

NPI 1215376009

Certified Registered Nurse Anesthetist

Dr. Sarah Bain , MD

Anesthesiology

NPI 1467612390

Doctor of Medicine (M.D.)

NPI 1265790018

Doctor of Medicine (M.D.)

Dr. Mark Bomann , MD

Anesthesiology

NPI 1578592937

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

10 Historical Events
📍
Updated Practice Location April 13, 2020

Registered at 1100 9TH AVE, SEATTLE, WA 981012756 (Tel: 2062236980)

📍
Updated Business Mailing Address April 13, 2020

Registered at 1100 9TH AVE, M4-PFS, SEATTLE, WA 981012756 (Tel: 2062236600)

📍
Updated Practice Location January 08, 2019

Registered at 1400 E BOULDER ST STE 2508, COLORADO SPRINGS, CO 80909 (Tel: 7193656999)

📍
Updated Business Mailing Address January 08, 2019

Registered at 2695 ROCKY MOUNTAIN AVE STE 150, LOVELAND, CO 805389071 (Tel: 9706244034)

✅
NPI Profile Active October 17, 2012

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) October 17, 2012

Registered at 1035 116TH AVE NE, BELLEVUE, WA 980044604 (Tel: 2062401879)

📍
Business Mailing Address (Initial Record) October 17, 2012

Registered at 1035 116TH AVE NE, BELLEVUE, WA 980044604 (Tel: 2062401879)

👤
Provider Name / Credentials (Initial Record) October 17, 2012

Recorded as TIEN THACH, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 17, 2012

Anesthesiology (license number reported to NPPES: WA MD 60147196)

🟢
Initial NPI Registration & Enumeration October 20, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1013099530
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 20, 2006
Last Update: April 13, 2020
Sole Proprietor: No

Other Anesthesiology Specialists in Seattle

All Anesthesiology Specialists in Seattle

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Directory navigation, in NPI number order.

Mailing Address

1100 9th Ave, M4-Pfs

Seattle, WA 981012756

Phone: 2062236600

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.