John T. Chiu, MD
Allergy & Immunology Physician · Newport Beach, CA
John T. Chiu, MD is an allergy & immunology physician with a practice address in Newport Beach, California, and NPI 1326121716, issued on Oct 23, 2006. Check the license (California G13693, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John T. Chiu
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- G13693 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Newport Center Dr, Newport Beach, CA 92660
- Phone
- (949) 644-1422
- Enumerated
- Oct 23, 2006
- Record last updated
- Jul 2, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (949) 644-1424
- Medicaid ID
- ZZZ70106Z CA
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 400 Newport Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John T. Chiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G13693Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
13 Medicare Part D claims, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D.
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.
John T. Chiu among 444 allergy & immunology physician records in California
John T. Chiu, MD is one of 444 allergy & immunology 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2018 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Newport Beach → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Loula Amin, M.D.Newport Beach, CA 926601043452782
- Min Jung Lee, MDNewport Beach, CA 926601295050508
- William Sokol, MDNewport Beach, CA 926601497756522
- Ripdeep Mangat, M.D.Newport Beach, CA 926631518069590
- Kristen Walters, MDAliso Viejo, CA 926561437442308
- Vivian Aranez, M.D.Huntington Beach, CA 926481699032805
- Steven Weinstein, MDHuntington Beach, CA 926471518035120
- Marc Dyer, MDLaguna Niguel, CA 926771144341918
Common questions
What is John T. Chiu, MD's NPI number?
John T. Chiu, MD's National Provider Identifier (NPI) is 1326121716, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John T. Chiu, MD located?
The NPPES record lists a practice address at 400 Newport Center Dr, Newport Beach, CA, 92660. Phone: (949) 644-1422. Providers update this record themselves, so call before visiting.
How can I verify John T. Chiu, MD's license?
NPPES lists California license number G13693, 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 John T. Chiu, MD prescribe under Medicare Part D?
In 2024, John T. Chiu, MD had 13 Medicare Part D claims; the average among allergy & immunology physician prescribers was 741. 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.