Quynam P. Nguyen, M.D.
Internal Medicine Physician · Los Angeles, CA
Quynam P. Nguyen, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1255452454, issued on Apr 3, 2007. Check the license (California G56407, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Quynam P. Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G56407 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3712 Whittier Blvd, Los Angeles, CA 90023
- Phone
- (323) 268-8347
- Enumerated
- Apr 3, 2007
- Record last updated
- Dec 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (323) 268-8368
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3712 Whittier Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Siri Hongsathavij, M.D.General Practice Physician1205014339
Verify Quynam P. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G56407Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $33.43
1 payment: food and beverage; the largest payer was Abbvie 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.
Quynam P. Nguyen among 17,696 internal medicine physician records in California
Quynam P. Nguyen, M.D. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2011 · 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
- Arinder Chadha, MD, MBA, FACPLos Angeles, CA 900231467480137
- Emmeline Chan, M.DLos Angeles, CA 900231841636784
- Dianne Domingo-Foraste, M.D.Los Angeles, CA 900231346376803
- Joseph Javdan, DOLos Angeles, CA 900231063667764
- Shura Moreno, MDLos Angeles, CA 900231174542716
- Zainab SaadiLos Angeles, CA 900231750724514
- John Sam, MDLos Angeles, CA 900231033278031
- Samuel Wosk, M.D.Los Angeles, CA 900231689604951
Common questions
What is Quynam P. Nguyen, M.D.'s NPI number?
Quynam P. Nguyen, M.D.'s National Provider Identifier (NPI) is 1255452454, issued on Apr 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Quynam P. Nguyen, M.D. located?
The NPPES record lists a practice address at 3712 Whittier Blvd, Los Angeles, CA, 90023. Phone: (323) 268-8347. Providers update this record themselves, so call before visiting.
How can I verify Quynam P. Nguyen, M.D.'s license?
NPPES lists California license number G56407, 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.
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.