NPPES file of Aug 9, 2026

Lam Duy Dang, M.D

Family Medicine Physician · Garden Grove, CA

Lam Duy Dang, M.D is a family medicine physician with a practice address in Garden Grove, California, and NPI 1861662553, issued on Mar 10, 2008. Check the license (California A104109, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861662553
Name
Lam Duy Dang
Credential
M.D
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A104109 CA
Self-reported in NPPES; status is on the state search
Practice location
10141 Westminster Ave, Garden Grove, CA 92843
Phone
(714) 467-4321
Enumerated
Mar 10, 2008
Record last updated
Aug 31, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(714) 467-4311
Medicare enrollment
Enrolled (PECOS I20100315000059); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10141 Westminster Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jaclynn Do, M.D.Family Medicine Physician1366439051
  2. Sun Hyu Kim, L.AC.Acupuncturist1891932836
  3. Sarah Nghiem, D.O.Family Medicine Physician1720270945
  4. Anne Nguyen, D.CChiropractor1407158579

Verify Lam Duy Dang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A104109
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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63% more Medicare Part D claims than the average family medicine physician in 2024

5,769 Medicare Part D claims for 331 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 71 claims were for opioids.

  1. Lam Dang5,769
  2. Specialty average3,544

Most prescribed

  1. Eliquis271 claims
  2. Atorvastatin Calcium216 claims
  3. Potassium Chloride200 claims
  4. Pantoprazole Sodium194 claims
  5. Levothyroxine Sodium158 claims
  6. Furosemide157 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

  1. Providence Medical FoundationFullerton, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Lam Duy Dang among 17,133 family medicine physician records in California

Lam Duy Dang, M.D is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.

  • NPI issued2008 · 53% of these records are older, 42% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2006 · median 2005 among the 10,652 with a school on file
  • Record last updated2020 · 58% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

69 family medicine physician records list a practice address in Garden Grove

They are 69 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Trieu Bui, DOGarden Grove, CA 928431548252505
  2. Hiep Dang, D.O.Garden Grove, CA 928431356328900
  3. Michael Dao, M.D.Garden Grove, CA 928431033182951
  4. Usha Dhar, M.D.Garden Grove, CA 928431699886846
  5. Jaclynn Do, M.D.Garden Grove, CA 928431366439051
  6. Thoa Do, MDGarden Grove, CA 928431982719597
  7. Said El-Zayat, M.D.Garden Grove, CA 928431215042866
  8. Ann Newsome, MDGarden Grove, CA 928431346285509

Common questions

What is Lam Duy Dang, M.D's NPI number?

Lam Duy Dang, M.D's National Provider Identifier (NPI) is 1861662553, issued on Mar 10, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Lam Duy Dang, M.D located?

The NPPES record lists a practice address at 10141 Westminster Ave, Garden Grove, CA, 92843. Phone: (714) 467-4321. Providers update this record themselves, so call before visiting.

How can I verify Lam Duy Dang, M.D's license?

NPPES lists California license number A104109, 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 Lam Duy Dang, M.D prescribe under Medicare Part D?

In 2024, Lam Duy Dang, M.D had 5,769 Medicare Part D claims for 331 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.