James Quan-Yu Hwang, M.D.
Emergency Medicine Physician · La Jolla, CA
James Quan-Yu Hwang, M.D. is an emergency medicine physician with a practice address in La Jolla, California, and NPI 1306932330, issued on Oct 5, 2006. Check the license (California A85681, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Quan-Yu Hwang
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A85681 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9888 Genesee Ave # LJ-105, La Jolla, CA 92037
- Phone
- (858) 626-6902
- Enumerated
- Oct 5, 2006
- Record last updated
- May 16, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (858) 626-4110
- Medicare enrollment
- Enrolled (PECOS I20041124000914); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 9888 Genesee Ave # LJ-105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Taylor Cardall, M.D.Emergency Medicine Physician1770534067
Verify James Quan-Yu Hwang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A85681Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% more Medicare Part D claims than the average emergency medicine physician in 2024
395 Medicare Part D claims for 248 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 56 claims were for opioids.
Most prescribed
- Ondansetron Hcl84 claims
- Oxycodone-Acetaminophen32 claims
- Cefuroxime29 claims
- Doxycycline Hyclate24 claims
- Albuterol Sulfate Hfa23 claims
- Cephalexin21 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 practice group's MIPS final score for 2023 (Medicare payment program): 88.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- LA Jolla Emergency SpecialistsLa Jolla, CA
- LA Jolla Observation MedicineLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Quan-Yu Hwang among 7,751 emergency medicine physician records in California
James Quan-Yu Hwang, M.D. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2002 · median 2011 among the 4,560 with a school on file
- Record last updated2013 · 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).
61 emergency medicine physician records list a practice address in La Jolla
They are 61 of the 3,648 NPPES records with a practice address in La Jolla, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in La Jolla → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- George Baehr, M.D.La Jolla, CA 920371083615512
- Taylor Cardall, M.D.La Jolla, CA 920371770534067
- Megan Demott, MDLa Jolla, CA 920371174507370
- Hung Huynh, M.D.La Jolla, CA 920371548248511
- Agnes Letai, M.D.La Jolla, CA 920371902886088
- Johannes Neuendorf, D.O.La Jolla, CA 920371154388601
- Richard Obler, MDLa Jolla, CA 920371063475507
- Mark Olcott, MDLa Jolla, CA 920371669474417
Common questions
What is James Quan-Yu Hwang, M.D.'s NPI number?
James Quan-Yu Hwang, M.D.'s National Provider Identifier (NPI) is 1306932330, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Quan-Yu Hwang, M.D. located?
The NPPES record lists a practice address at 9888 Genesee Ave # LJ-105, La Jolla, CA, 92037. Phone: (858) 626-6902. Providers update this record themselves, so call before visiting.
How can I verify James Quan-Yu Hwang, M.D.'s license?
NPPES lists California license number A85681, 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 James Quan-Yu Hwang, M.D. prescribe under Medicare Part D?
In 2024, James Quan-Yu Hwang, M.D. had 395 Medicare Part D claims for 248 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is James Quan-Yu Hwang, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.2 of 100, reported for the practice group. 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.