David Lam, D.O.
Internal Medicine Physician · Los Angeles, CA
David Lam, D.O. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1174996342, issued on Nov 10, 2015. Check the license (California 14340, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Lam
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 14340 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1720 E Cesar E Chavez Ave, Los Angeles, CA 90033
- Phone
- (323) 987-1362
- Enumerated
- Nov 10, 2015
- Record last updated
- Aug 8, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170822003877); accepts Medicare assignment
- Medical or professional school
- Western University Of Health Sciences College Of Dental Med, 2014
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1720 E Cesar E Chavez Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Lam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 14340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,110 Medicare Part D claims for 162 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 41 claims were for opioids.
Most prescribed
- Atorvastatin Calcium230 claims
- Metformin Hcl144 claims
- Losartan Potassium134 claims
- Amlodipine Besylate94 claims
- Lisinopril68 claims
- Gabapentin66 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.
The MIPS final score for 2023 (Medicare payment program): 97.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $459.95
21 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- White Memorial Medical CenterLos Angeles, CA
- White Memorial Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Lam among 17,696 internal medicine physician records in California
David Lam, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- William Hardy, M.D.Los Angeles, CA 900331760410518
- Howard Hodis, M.D.Los Angeles, CA 900331407894009
- Eric Hsieh, M.D.Los Angeles, CA 900331811941974
- Jenny Hwang, M.D.Los Angeles, CA 900331578548764
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Common questions
What is David Lam, D.O.'s NPI number?
David Lam, D.O.'s National Provider Identifier (NPI) is 1174996342, issued on Nov 10, 2015. An NPI identifies a provider in billing; it is not a license.
Where is David Lam, D.O. located?
The NPPES record lists a practice address at 1720 E Cesar E Chavez Ave, Los Angeles, CA, 90033. Phone: (323) 987-1362. Providers update this record themselves, so call before visiting.
How can I verify David Lam, D.O.'s license?
NPPES lists California license number 14340, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Lam, D.O. prescribe under Medicare Part D?
In 2024, David Lam, D.O. had 2,110 Medicare Part D claims for 162 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is David Lam, D.O.'s MIPS final score?
The 2023 MIPS final score is 97.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.