Joshua Chia-Hwa Chen, D.O.
Infectious Disease Physician · Newport Beach, CA
Joshua Chia-Hwa Chen, D.O. is an infectious disease physician with a practice address in Newport Beach, California, and NPI 1750745873, issued on Apr 6, 2016. Check the license (California 20A16292, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joshua Chia-Hwa Chen
- Credential
- D.O.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 20A16292 CA
Self-reported in NPPES; status is on the state search - Practice location
- 320 Superior Ave Ste 370, Newport Beach, CA 92663
- Phone
- (949) 515-3590
- Enumerated
- Apr 6, 2016
- Record last updated
- Aug 19, 2022
- Fax
- (562) 232-3728
- Medicare enrollment
- Enrolled (PECOS I20181203002550); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 320 Superior Ave Ste 370
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vinicius Klee Lopes, M.D.Infectious Disease Physician1033420476
- Jae Shin, M.D.Infectious Disease Physician1669620142
- Anjali Vora, M.D.Infectious Disease Physician1326248170
Verify Joshua Chia-Hwa Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A16292Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average infectious disease physician in 2024
621 Medicare Part D claims for 183 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Sulfamethoxazole-Trimethoprim60 claims
- Gentamicin Sulfate39 claims
- Ceftriaxone29 claims
- Amoxicillin25 claims
- Azithromycin25 claims
- Cefadroxil25 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: $839.27
39 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. 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.
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
- Southern California ID Associates IncNewport Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua Chia-Hwa Chen among 1,119 infectious disease physician records in California
Joshua Chia-Hwa Chen, D.O. 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 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2016 · 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.
All 1,119 in California → Every provider in Newport Beach → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Susan Allen, MDNewport Beach, CA 926631841276805
- Bonnie Bock, MDNewport Beach, CA 926631225226558
- Douglas Cable, MDNewport Beach, CA 926631861406324
- Martin Fee, MDNewport Beach, CA 926631124008537
- Vinicius Klee Lopes, M.D.Newport Beach, CA 926631033420476
- Khaing MyintNewport Beach, CA 926631720430135
- Philip Robinson, MDNewport Beach, CA 926631205810066
- Jae Shin, M.D.Newport Beach, CA 926631669620142
Common questions
What is Joshua Chia-Hwa Chen, D.O.'s NPI number?
Joshua Chia-Hwa Chen, D.O.'s National Provider Identifier (NPI) is 1750745873, issued on Apr 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Chia-Hwa Chen, D.O. located?
The NPPES record lists a practice address at 320 Superior Ave Ste 370, Newport Beach, CA, 92663. Phone: (949) 515-3590. Providers update this record themselves, so call before visiting.
How can I verify Joshua Chia-Hwa Chen, D.O.'s license?
NPPES lists California license number 20A16292, 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 Joshua Chia-Hwa Chen, D.O. prescribe under Medicare Part D?
In 2024, Joshua Chia-Hwa Chen, D.O. had 621 Medicare Part D claims for 183 beneficiaries; the average among infectious disease physician prescribers was 689. 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.