William Chiang, M.D.
Emergency Medicine Physician · Fresno, CA
William Chiang, M.D. is an emergency medicine physician with a practice address in Fresno, California, and NPI 1417336165, issued on May 28, 2015. Check the license (California A162279, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Chiang
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A162279 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2823 Fresno St, Fresno, CA 93721
- Phone
- (559) 499-6440
- Enumerated
- May 28, 2015
- Record last updated
- Jan 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200831003332); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2015
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2823 Fresno St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shahrin Abdalian, NPAcute Care Nurse Practitioner1043716186
- Mariam Abdelkader, MDCritical Care Medicine (Internal Medicine) Physician1689022824
- Majdi Abdulmaula, M.DInternal Medicine Physician1295260529
- Reema Aboelrish, PA-CMedical Physician Assistant1376466144
- Reem Aboushaar, MDPediatrics Physician1013543933
- Inas Abukraa, M.DFamily Medicine Physician1376115881
Verify William Chiang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A162279Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average emergency medicine physician in 2024
62 Medicare Part D claims for 52 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin15 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): 100 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 one group practice
- Seattle Emergency Physicians Services Inc PSSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Chiang among 7,751 emergency medicine physician records in California
William Chiang, 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 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2015 · median 2011 among the 4,560 with a school on file
- Record last updated2021 · 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).
228 emergency medicine physician records list a practice address in Fresno
They are 228 of the 19,440 NPPES records with a practice address in Fresno, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Fresno → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Janak Acharya, MDFresno, CA 937211376508721
- James Andrews, MDFresno, CA 937211629086269
- Herbert Bivins, MDFresno, CA 937211972619518
- Brian Chinnock, M.D.Fresno, CA 937211861481947
- Carolyn Chooljian, MDFresno, CA 937211982656807
- James Comes, MDFresno, CA 937211669424412
- Michael Darracq, M.D.Fresno, CA 937211275553414
- Ryan Ernst, MD, PA-CFresno, CA 937211396787289
Common questions
What is William Chiang, M.D.'s NPI number?
William Chiang, M.D.'s National Provider Identifier (NPI) is 1417336165, issued on May 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is William Chiang, M.D. located?
The NPPES record lists a practice address at 2823 Fresno St, Fresno, CA, 93721. Phone: (559) 499-6440. Providers update this record themselves, so call before visiting.
How can I verify William Chiang, M.D.'s license?
NPPES lists California license number A162279, 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 William Chiang, M.D. prescribe under Medicare Part D?
In 2024, William Chiang, M.D. had 62 Medicare Part D claims for 52 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is William Chiang, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.