NPPES file of Aug 9, 2026

Aaron Kwong

Infectious Disease Physician · Los Angeles, CA

Aaron Kwong is an infectious disease physician with a practice address in Los Angeles, California, and NPI 1255867826, issued on May 2, 2017. Check the license (California A159103, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255867826
Name
Aaron Kwong
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
A159103 CA
Self-reported in NPPES; status is on the state search
Practice location
8635 W 3RD St Ste 465W, Los Angeles, CA 90048
Phone
(310) 358-2300
Enumerated
May 2, 2017
Record last updated
Jun 20, 2022
Medicare enrollment
Enrolled (PECOS I20220813000209); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 2017
Telehealth
Offers telehealth (CMS)
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 8635 W 3RD St Ste 465W

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

  1. Christopher Foltz, M.D.Infectious Disease Physician1245597962
  2. Nicole Fossas Braegger, MDInfectious Disease Physician1336708825
  3. Hayden Lowenstein, M.D.Infectious Disease Physician1437446648
  4. Jillian Oft, MDInfectious Disease Physician1184940876
  5. Gisela Rosario Rosario, M.D.Infectious Disease Physician1073873733
  6. Carina SterlingFamily Nurse Practitioner1669797908

Verify Aaron Kwong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A159103
    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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55% fewer Medicare Part D claims than the average infectious disease physician in 2024

308 Medicare Part D claims for 60 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.

  1. Aaron Kwong308
  2. Specialty average689

Most prescribed

  1. Biktarvy39 claims
  2. Rifampin26 claims
  3. Ethambutol Hcl25 claims
  4. Azithromycin23 claims
  5. Cefepime Hcl15 claims
  6. Ceftriaxone15 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): 85.7 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.

  1. Qualityout of 100 · 30% of the final score85.7
  2. Costout of 100 · 30%61.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $379.34

5 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Aaron Kwong$379.34
  2. Specialty average$4,362.19

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Cedars-Sinai Medical Care FoundationLos Angeles, CA

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

Aaron Kwong among 1,119 infectious disease physician records in California

Aaron Kwong is one of 1,119 infectious disease 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 2017, is newer than 88% of them.

  • NPI issued2017 · 88% of these records are older, 10% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2017 · median 2003 among the 735 with a school on file
  • Record last updated2022 · 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 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in California

There are 1,119 infectious disease physician records in California.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Randy Feldman, M.D.Los Angeles, CA 900481538192588
  2. Paula Gaut, M.D.Los Angeles, CA 900481215965348
  3. Lena HeungWest Hollywood, CA 900481326257106
  4. Ziba Jalali, MDWest Hollywood, CA 900481902855232
  5. Jia-Yia Liu, MDWest Hollywood, CA 900481639162266
  6. Aruna Murthy, M.D.Los Angeles, CA 900481386672418
  7. Irving Posalski, M.D.Los Angeles, CA 900481336172378
  8. Jeffrey Rapp, M.D.Los Angeles, CA 900481619995073

Common questions

What is Aaron Kwong's NPI number?

Aaron Kwong's National Provider Identifier (NPI) is 1255867826, issued on May 2, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Aaron Kwong located?

The NPPES record lists a practice address at 8635 W 3RD St Ste 465W, Los Angeles, CA, 90048. Phone: (310) 358-2300. Providers update this record themselves, so call before visiting.

How can I verify Aaron Kwong's license?

NPPES lists California license number A159103, 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 Aaron Kwong prescribe under Medicare Part D?

In 2024, Aaron Kwong had 308 Medicare Part D claims for 60 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.

What is Aaron Kwong's MIPS final score?

The 2023 MIPS final score is 85.7 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.