David Ngo
Emergency Medicine Physician · Garden Grove, CA
David Ngo is an emergency medicine physician with a practice address in Garden Grove, California, and NPI 1922240423, issued on Mar 30, 2009. Check the license (California A1204341, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Ngo
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A1204341 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12311 Janet St, Garden Grove, CA 92840
- Phone
- (818) 462-3517
- Enumerated
- Mar 30, 2009
- Record last updated
- Oct 27, 2023
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify David Ngo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A1204341Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average emergency medicine physician in 2024
172 Medicare Part D claims for 108 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 26 claims were for opioids.
Most prescribed
- Cephalexin20 claims
- Sulfamethoxazole-Trimethoprim18 claims
- Ondansetron Odt17 claims
- Acetaminophen-Codeine11 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.
Industry payments in 2024: $28.42
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 12,335 providers of this specialty with any payment received $953.79 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.
David Ngo among 7,751 emergency medicine physician records in California
David Ngo is one of 7,751 emergency 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 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Garden Grove → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Aaron Cho, D.O.Garden Grove, CA 928411164841482
- Viet Tran, M.D.Garden Grove, CA 928411154610939
- Don HaGarden Grove, CA 928431386339232
- Alec Huynh, M.DGarden Grove, CA 928431477577575
- Dan Nadler, M.D.Garden Grove, CA 928431053424044
- Kim-Tan Nguyen, M.D.Garden Grove, CA 928431174752836
- Brian Rhee, M.DGarden Grove, CA 928431346290772
- Carl Stilson, M.D.Garden Grove, CA 928431831204262
Common questions
What is David Ngo's NPI number?
David Ngo's National Provider Identifier (NPI) is 1922240423, issued on Mar 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is David Ngo located?
The NPPES record lists a practice address at 12311 Janet St, Garden Grove, CA, 92840. Phone: (818) 462-3517. Providers update this record themselves, so call before visiting.
How can I verify David Ngo's license?
NPPES lists California license number A1204341, 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 Ngo prescribe under Medicare Part D?
In 2024, David Ngo had 172 Medicare Part D claims for 108 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.