Ian Weng Lam
Family Medicine Physician · Las Vegas, NV
Ian Weng Lam is a family medicine physician with a practice address in Las Vegas, Nevada, and NPI 1144857459, issued on Mar 25, 2020. Check the license (Nevada DO3447, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ian Weng Lam
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- DO3447 NV
Self-reported in NPPES; status is on the state search - Practice location
- 4475 S Eastern Ave, Las Vegas, NV 89119
- Phone
- (702) 877-5199
- Enumerated
- Mar 25, 2020
- Record last updated
- Aug 14, 2023
- Medicare enrollment
- Enrolled (PECOS I20230825002649); accepts Medicare assignment
- Medical or professional school
- Touro Un College Of Osteopathic Medicine, Vallejo, 2020
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,243 in Nevada → Look up another NPI →
Also registered at 4475 S Eastern Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ian Weng Lam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO3447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average family medicine physician in 2024
2,984 Medicare Part D claims for 450 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium280 claims
- Lisinopril160 claims
- Levothyroxine Sodium156 claims
- Gabapentin126 claims
- Duloxetine Hcl122 claims
- Albuterol Sulfate Hfa118 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.
Bills Medicare through one group practice
- Optum Medical Group II Rhodes P CLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Weng Lam among 1,243 family medicine physician records in Nevada
Ian Weng Lam is one of 1,243 family medicine physician records with a practice address in Nevada. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2020 · median 2008 among the 726 with a school on file
- Record last updated2023 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
578 family medicine physician records list a practice address in Las Vegas
They are 578 of the 65,269 NPPES records with a practice address in Las Vegas, and 1,243 family medicine physician records in Nevada.
All 1,243 in Nevada → Every provider in Las Vegas → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Hoa-Tuyet Bui, MDLas Vegas, NV 891191689648669
- Victor Chou, MDLas Vegas, NV 891191164424867
- John Ciesielka, M.D.Las Vegas, NV 891191255396099
- Weldon James, MDLas Vegas, NV 891191053499970
- Robert Kaplan, D.O.Las Vegas, NV 891191124101035
- Kevin Kapov, DOLas Vegas, NV 891191932192614
- Vipul KubalLas Vegas, NV 891191093808586
- Steven Lissau, MDLas Vegas, NV 891191841215266
Common questions
What is Ian Weng Lam's NPI number?
Ian Weng Lam's National Provider Identifier (NPI) is 1144857459, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ian Weng Lam located?
The NPPES record lists a practice address at 4475 S Eastern Ave, Las Vegas, NV, 89119. Phone: (702) 877-5199. Providers update this record themselves, so call before visiting.
How can I verify Ian Weng Lam's license?
NPPES lists Nevada license number DO3447, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ian Weng Lam prescribe under Medicare Part D?
In 2024, Ian Weng Lam had 2,984 Medicare Part D claims for 450 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.