John Jiao, MD
Emergency Medicine Physician · Fullerton, CA
John Jiao, MD is an emergency medicine physician with a practice address in Fullerton, California, and NPI 1407419070, issued on Apr 18, 2019. Check the license (California A177043, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Jiao
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A177043 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 E Valencia Mesa Dr, Fullerton, CA 92835
- Phone
- (714) 871-3280
- Enumerated
- Apr 18, 2019
- Record last updated
- Mar 7, 2024
- Medicare enrollment
- Enrolled (PECOS I20220809002095); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 101 E Valencia Mesa Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Abbott, MDEmergency Medicine Physician1518907864
- Nelson Aguinaga, RN, FNPFamily Nurse Practitioner1043909609
- Jonathon Ahn, MDAnesthesiology Physician1053803882
- Sora Ahn, RNCritical Care Medicine Registered Nurse1730026493
- Sherry Ansari, DPTPhysical Medicine & Rehabilitation Physician1467972992
- Tandeep Bains, PHARM.D.Pharmacist1568958114
Verify John Jiao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A177043Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% more Medicare Part D claims than the average emergency medicine physician in 2024
421 Medicare Part D claims for 250 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Ibuprofen80 claims
- Ondansetron Odt59 claims
- Hydrocodone-Acetaminophen26 claims
- Cephalexin23 claims
- Sulfamethoxazole-Trimethoprim22 claims
- Tramadol Hcl15 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.
Bills Medicare through 2 group practices
- Cep America - CaliforniaFountain Valley, CA
- OC Emergency PhysiciansTustin, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Jiao among 7,751 emergency medicine physician records in California
John Jiao, MD 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2019 · median 2011 among the 4,560 with a school on file
- Record last updated2024 · 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 Fullerton → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Daniel Abbott, MDFullerton, CA 928351518907864
- Karl Feng, MDFullerton, CA 928351306875190
- Timothy Greco, MDFullerton, CA 928351255369757
- Donald Greco, MDFullerton, CA 928351922032739
- Scott Jones, MDFullerton, CA 928351740220094
- Iksoo Kang, MDFullerton, CA 928351093758393
- Kristine Koh, MDFullerton, CA 928351598712614
- Jeremy Lins, MDFullerton, CA 928351346828159
Common questions
What is John Jiao, MD's NPI number?
John Jiao, MD's National Provider Identifier (NPI) is 1407419070, issued on Apr 18, 2019. An NPI identifies a provider in billing; it is not a license.
Where is John Jiao, MD located?
The NPPES record lists a practice address at 101 E Valencia Mesa Dr, Fullerton, CA, 92835. Phone: (714) 871-3280. Providers update this record themselves, so call before visiting.
How can I verify John Jiao, MD's license?
NPPES lists California license number A177043, 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 Jiao, MD prescribe under Medicare Part D?
In 2024, John Jiao, MD had 421 Medicare Part D claims for 250 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.