Thomas Thanh Tieu, DMD
General Practice Dentistry · Portland, OR
Thomas Thanh Tieu, DMD is a general practice dentistry with a practice address in Portland, Oregon, and NPI 1104901040, issued on Oct 26, 2006. Check the license (Oregon D7324, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thomas Thanh Tieu
- Credential
- DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- D7324 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3620 NE 122ND Ave, Portland, OR 97230
- Phone
- (503) 254-5575
- Enumerated
- Oct 26, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (503) 254-2161
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,888 in Oregon → Look up another NPI →
Also registered at 3620 NE 122ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Leonardo Porreco, PTOrthopedic Physical Therapist1215101555
Verify Thomas Thanh Tieu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license D7324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average general practice dentistry in 2024
106 Medicare Part D claims for 65 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Penicillin V Potassium47 claims
- Hydrocodone-Acetaminophen25 claims
- Chlorhexidine Gluconate18 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.
Thomas Thanh Tieu among 1,888 general practice dentistry records in Oregon
Thomas Thanh Tieu, DMD is one of 1,888 general practice dentistry records with a practice address in Oregon. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 55% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Dentistry providers in Oregon
There are 1,888 general practice dentistry records in Oregon.
All 1,888 in Oregon → Every provider in Portland → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Lance Bergeson, D.M.DPortland, OR 972301245683911
- Duane Cartwright, D.M.D.Portland, OR 972301669687349
- Kody Crook, DMDPortland, OR 972301114651460
- Nathan Dustin, DMDPortland, OR 972301982792636
- Timothy Elliott, DMDPortland, OR 972301932428794
- Kayla Ellis, DDSPortland, OR 972301003703406
- Lemond Hunter, DMDPortland, OR 972301609067636
- Lamuel Lucescu, DMDPortland, OR 972301376752873
Common questions
What is Thomas Thanh Tieu, DMD's NPI number?
Thomas Thanh Tieu, DMD's National Provider Identifier (NPI) is 1104901040, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Thanh Tieu, DMD located?
The NPPES record lists a practice address at 3620 NE 122ND Ave, Portland, OR, 97230. Phone: (503) 254-5575. Providers update this record themselves, so call before visiting.
How can I verify Thomas Thanh Tieu, DMD's license?
NPPES lists Oregon license number D7324, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Thomas Thanh Tieu, DMD prescribe under Medicare Part D?
In 2024, Thomas Thanh Tieu, DMD had 106 Medicare Part D claims for 65 beneficiaries; the average among general practice dentistry prescribers was 83. 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.