Vivian Lam, D.M.D
General Practice Dentistry · Tigard, OR
Vivian Lam, D.M.D is a general practice dentistry with a practice address in Tigard, Oregon, and NPI 1891744553, issued on May 9, 2006. Check the license (Oregon D8433, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Vivian Lam
- Credential
- D.M.D
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- D8433 OR
Self-reported in NPPES; status is on the state search - Practice location
- 12266 SW Scholls Ferry RD, Tigard, OR 97223
- Phone
- (503) 455-8483
- Enumerated
- May 9, 2006
- Record last updated
- Dec 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,888 in Oregon → Look up another NPI →
Also registered at 12266 SW Scholls Ferry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tina VoDentist1356217582
Verify Vivian Lam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license D8433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average general practice dentistry in 2024
42 Medicare Part D claims for 35 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Penicillin V Potassium15 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.
Industry payments in 2024: $71.84
1 payment: food and beverage; the largest payer was Zest Holdings, LLC. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Vivian Lam among 1,888 general practice dentistry records in Oregon
Vivian Lam, D.M.D 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 updated2015 · 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).
46 general practice dentistry records list a practice address in Tigard
They are 46 of the 3,081 NPPES records with a practice address in Tigard, and 1,888 general practice dentistry records in Oregon.
All 1,888 in Oregon → Every provider in Tigard → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Gregory Alexander, D.D.S.Portland, OR 972231972517985
- Greg Bowers, DMDTigard, OR 972231124040183
- Roger Dimick, DMDTigard, OR 972231609955772
- Christopher Grenzer, D.M.D.Tigard, OR 972231467459164
- John McCroskey, DDSTigard, OR 972231821096058
- Thomas Orazio, DMDPortland, OR 972231356407894
- Daniel Pihlstrom, D.D.S.Tigard, OR 972231891704557
- Brian Saklofsky, DMDPortland, OR 972231790785673
Common questions
What is Vivian Lam, D.M.D's NPI number?
Vivian Lam, D.M.D's National Provider Identifier (NPI) is 1891744553, issued on May 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Vivian Lam, D.M.D located?
The NPPES record lists a practice address at 12266 SW Scholls Ferry RD, Tigard, OR, 97223. Phone: (503) 455-8483. Providers update this record themselves, so call before visiting.
How can I verify Vivian Lam, D.M.D's license?
NPPES lists Oregon license number D8433, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Vivian Lam, D.M.D prescribe under Medicare Part D?
In 2024, Vivian Lam, D.M.D had 42 Medicare Part D claims for 35 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.