William Shyy, M.D.
Emergency Medicine Physician · Santa Monica, CA
William Shyy, M.D. is an emergency medicine physician with a practice address in Santa Monica, California, and NPI 1013202274, issued on Jun 16, 2011. Check the license (California A130299, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Shyy
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- A130299 CA
125-059672 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1250 16TH St, Santa Monica, CA 90404
- Phone
- (310) 794-7700
- Enumerated
- Jun 16, 2011
- Record last updated
- Jan 5, 2023
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1250 16TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Altamirano-CariagaNurse Practitioner1588060198
- Miguel Arellano, NPNurse Practitioner1295460806
- Jason Bahk, M.D.Hospitalist Physician1245573187
- Christopher BelfourEmergency Medicine Physician1518259837
- Umesh Bhagia, MDSurgery Physician1568468528
- Cassandra Blaylock, NPHematology & Oncology Physician1588043400
Verify William Shyy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A130299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average emergency medicine physician in 2024
125 Medicare Part D claims for 90 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
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): 74.5 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).
Industry payments in 2024: $96.18
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 12,335 providers of this specialty with any payment received $953.79 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.
William Shyy among 7,751 emergency medicine physician records in California
William Shyy, 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 2011, is newer than 60% of them.
- NPI issued2011 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2023 · 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 Santa Monica → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Isaac Bash, MDSanta Monica, CA 904041619934643
- Victor Candioty, MDSanta Monica, CA 904041437116472
- Michelle Charfen, M.D.Santa Monica, CA 904041588602486
- Edward Cotner, MDSanta Monica, CA 904041023074044
- Patricia Drum-Lal, PACSanta Monica, CA 904041639136674
- Walid Ghurabi, D.O.Santa Monica, CA 904041073566931
- Daniel Grossman, MDSanta Monica, CA 904041386601326
- Amy Kijner, PASanta Monica, CA 904041235197849
Common questions
What is William Shyy, M.D.'s NPI number?
William Shyy, M.D.'s National Provider Identifier (NPI) is 1013202274, issued on Jun 16, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William Shyy, M.D. located?
The NPPES record lists a practice address at 1250 16TH St, Santa Monica, CA, 90404. Phone: (310) 794-7700. Providers update this record themselves, so call before visiting.
How can I verify William Shyy, M.D.'s license?
NPPES lists California license number A130299, 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 Shyy, M.D. prescribe under Medicare Part D?
In 2024, William Shyy, M.D. had 125 Medicare Part D claims for 90 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is William Shyy, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.5 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.