Tommy Tienchi Chiou, MD
Cardiovascular Disease Physician · Seattle, WA
Tommy Tienchi Chiou, MD is a cardiovascular disease physician with a practice address in Seattle, Washington, and NPI 1023700242, issued on May 25, 2023. Check the license (Washington MD.MD.70097945, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Tommy Tienchi Chiou
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- MD.MD.70097945 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1959 NE Pacific St, Seattle, WA 98195
- Phone
- (206) 685-1397
- Enumerated
- May 25, 2023
- Record last updated
- Jul 10, 2026
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 512 in Washington → Look up another NPI →
Also registered at 1959 NE Pacific St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tommy Tienchi Chiou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD.MD.70097945Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
277 Medicare Part D claims for 81 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa19 claims
- Amlodipine Besylate17 claims
- Atorvastatin Calcium16 claims
- Rosuvastatin Calcium12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Tommy Tienchi Chiou among 512 cardiovascular disease physician records in Washington
Tommy Tienchi Chiou, MD is one of 512 cardiovascular disease physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 99% of them.
- NPI issued2023 · 99% of these records are older, under 1% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Washington
There are 512 cardiovascular disease physician records in Washington.
All 512 in Washington → Every provider in Seattle → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Kelley BranchSeattle, WA 981951760572622
- Carol BuchterSeattle, WA 981951013007962
- James Caldwell, MDSeattle, WA 981951326158338
- Andrew Cheng, MDSeattle, WA 981951710092416
- Hui-San Chung, MDSeattle, WA 981951659485308
- Rosario Freeman, MDSeattle, WA 981951245370436
- George Gey, MDSeattle, WA 981951902981731
- Eric Krieger, MDSeattle, WA 981951134231194
Common questions
What is Tommy Tienchi Chiou, MD's NPI number?
Tommy Tienchi Chiou, MD's National Provider Identifier (NPI) is 1023700242, issued on May 25, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Tommy Tienchi Chiou, MD located?
The NPPES record lists a practice address at 1959 NE Pacific St, Seattle, WA, 98195. Phone: (206) 685-1397. Providers update this record themselves, so call before visiting.
How can I verify Tommy Tienchi Chiou, MD's license?
NPPES lists Washington license number MD.MD.70097945, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tommy Tienchi Chiou, MD prescribe under Medicare Part D?
In 2024, Tommy Tienchi Chiou, MD had 277 Medicare Part D claims for 81 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.