Gan Xon Ng, MD
Hospitalist Physician · Los Angeles, CA
Gan Xon Ng, MD is a hospitalist physician with a practice address in Los Angeles, California, and NPI 1588636641, issued on Feb 3, 2006. Check the license (California C53500, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gan Xon Ng
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- C53500 CA
230318 NY
Self-reported in NPPES; status is on the state search - Practice location
- 757 Westwood Plz, Los Angeles, CA 90095
- Phone
- (310) 267-9643
- Enumerated
- Feb 3, 2006
- Record last updated
- Mar 28, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (310) 267-3840
- Medicaid ID
- 1588636641 CA
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 757 Westwood Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gan Xon Ng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C53500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.8 times the Medicare Part D claims of the average hospitalist physician in 2024
3,016 Medicare Part D claims for 229 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 43 claims were for opioids.
Most prescribed
- Atorvastatin Calcium278 claims
- Losartan Potassium177 claims
- Amlodipine Besylate168 claims
- Sertraline Hcl109 claims
- Mirtazapine94 claims
- Metoprolol Succinate92 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.
Gan Xon Ng among 3,099 hospitalist physician records in California
Gan Xon Ng, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2017 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Los Angeles → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Nasim Afsarmanesh, MDLos Angeles, CA 900951447455449
- Ashley Busuttil, MDLos Angeles, CA 900951629022314
- Neveen El-Farra, MDLos Angeles, CA 900951881629509
- Edward Ha, M.D.Los Angeles, CA 900951285818518
- Estebes Hernandez, M.D.Los Angeles, CA 900951982877056
- Angela Kleiber, M.D., RD, CNSDLos Angeles, CA 900951285790899
- Michael Lazarus, MDLos Angeles, CA 900951689693582
- Edward Lee, M.D.Los Angeles, CA 900951376784447
Common questions
What is Gan Xon Ng, MD's NPI number?
Gan Xon Ng, MD's National Provider Identifier (NPI) is 1588636641, issued on Feb 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gan Xon Ng, MD located?
The NPPES record lists a practice address at 757 Westwood Plz, Los Angeles, CA, 90095. Phone: (310) 267-9643. Providers update this record themselves, so call before visiting.
How can I verify Gan Xon Ng, MD's license?
NPPES lists California license number C53500, 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 Gan Xon Ng, MD prescribe under Medicare Part D?
In 2024, Gan Xon Ng, MD had 3,016 Medicare Part D claims for 229 beneficiaries; the average among hospitalist physician prescribers was 521. 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.