Emerg Med J
Dr. William Shyy, MD
- Medicare services, 2024
- 560
- Medicare patients, 2024
- 532
- Part D claims, 2024
- 125
- Publications
- 14
- MIPS score, 2024
- 100
- Practice address
- 200 Medical Plz, Los Angeles, CA 90024
- Practice phone
- Call (310) 794-9206
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Peter Morton UCLA Medical Building
Los Angeles, California
Find Dr. Shyy's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William Shyy is an emergency medicine physician in Los Angeles, California
Dr. Shyy practices at Peter Morton UCLA Medical Building in Los Angeles, California.
Dr. Shyy's NPI, 1013202274, was assigned on June 16, 2011. Dr. Shyy graduated from Carver College of Medicine in 2011. Dr. Shyy's California license number on file is A130299.
- NPI
- 1013202274NPI Registry (opens in a new tab)
- NPI enumeration date
- June 16, 2011
- NPI status
- Active
- Practice phone
- (310) 794-9206
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. William Shyy practices at Peter Morton UCLA Medical Building in Los Angeles, California
Dr. Shyy's primary practice is Peter Morton UCLA Medical Building, at 200 Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 794-9206.
- Peter Morton UCLA Medical Building200 Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 794-9206
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Shyy is affiliated with 3 sites of care and 5 medical groups
Dr. Shyy's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dr. Shyy is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Medical Group. Dmand AI also links Dr. Shyy to 1 more hospital and 4 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Shyy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shyy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peter Morton UCLA Medical Building | Available with a free account |
| +2 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Shyy is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Shyy's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Shyy is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Shyy's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Illinois license
Emergency medicine physicians near Dr. Shyy
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William Shyy billed Medicare for 560 services in 2024
CMS data shows 560 Medicare services from Dr. Shyy across 5 procedure codes in 2024, for 532 Medicare patients. Medicare paid $64,282 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Shyy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3882024: 54841%
- Tests and treatments
- 2023: 02024: 12
Dr. Shyy compared with the California median for emergency medicine physicians, 2024
- Dr. Shyy
- California median
- Medicare services
- 560vs 2652.1 times
- Medicare patients
- 532vs 2432.2 times
- Part D claims
- 23vs 6263% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Shyy's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Shyy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shyy and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Shyy treated 532 Medicare patients in 2024, average age 75
CMS counts 532 Medicare patients who saw Dr. Shyy in 2024. The largest group is 65 to 74, with 169 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 46% are also on Medicaid. Their average risk score is 2.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Shyy's median patient age at 45, with 50% women.
Dr. Shyy's Medicare patients by age, 2024
Dr. Shyy's Medicare patients by sex, 2024
- Women27452%
- Men25848%
Chronic conditions among Dr. Shyy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease47%
- Chronic kidney disease43%
- Diabetes43%
- Mood disorders43%
- Anxiety41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shyy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Shyy wrote 125 Medicare Part D claims in 2024
In 2024, Dr. Shyy wrote 125 Medicare Part D claims for 90 patients. 89% of them were for generic drugs. CMS names the drug for 23 of them, across 2 drugs with 11 or more claims each, at $91 in total drug cost.
Dr. Shyy's Part D claims by kind of drug, 2024
- Generic111 claims89%
- Brand-name and other14 claims11%
Dr. Shyy's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Shyy's Part D claims, 2024
- Opioids16%20 of 125 claims
- Antibiotics30%37 of 125 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William Shyy scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Shyy for performance year 2024, reported as part of a group.
Dr. Shyy's MIPS scores, performance year 2024
- 100of 100Final score
- 93.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 80of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William Shyy has 14 publications on record
Dmand AI links 14 papers to Dr. Shyy, published from 2009 to 2023. 2017 was the busiest year, with 2. The most frequent topics are Ultrasonography, Diagnosis, Differential and Point-of-Care Systems. Dr. Shyy has published most often in Emerg Med J. Dr. Shyy's most frequent co-authors are Roneesha Starr Knight, MD, Nathan A. Teismann, MD and Aaron Edward Kornblith, MD.
Dr. Shyy's papers by year, 2009 to 2023
Topics Dr. Shyy writes about most
- Ultrasonography
- Diagnosis, Differential
- Point-of-Care Systems
- Emergency Service, Hospital
- Tomography, X-Ray Computed
- Abdominal Pain
- Clubfoot
- Exons
Dr. Shyy's most frequent co-authors
- Roneesha Starr Knight, MD8 shared papers
- Nathan A. Teismann, MD6 shared papers
- Aaron Edward Kornblith, MD2 shared papers
Recent publications by Dr. Shyy
Emerg Med J
See who Dr. Shyy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Shyy works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Shyy received $248 in industry payments from 2024 to 2025
CMS Open Payments shows 3 general payments to Dr. Shyy from 1 drug or device company from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $248.
General payments to Dr. Shyy by program year, 2024 to 2025
Companies that paid Dr. Shyy the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Shyy graduated from Carver College of Medicine
Dr. Shyy graduated from Carver College of Medicine in 2011.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. William Shyy accepts plans from 4 insurance carriers
Dr. Shyy is in network with 4 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and Elevance. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- Elevance
- LA Care
Plan types Dr. Shyy accepts, by number of carriers
- HMO3
- EPO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. William Shyy's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William Shyy
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William Shyy's NPI number?
Dr. William Shyy's NPI number is 1013202274. It was assigned on June 16, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. William Shyy?
Dr. William Shyy is an emergency medicine physician in Los Angeles, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. William Shyy practice?
Dr. Shyy practices at 200 Medical Plz, Los Angeles, CA 90024. Dr. Shyy's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dmand AI also links Dr. Shyy to 1 hospital and 4 medical groups.
What is Dr. William Shyy's office phone number?
The practice phone on file for Dr. Shyy is (310) 794-9206.
What is Dr. William Shyy's medical license number?
Dr. Shyy's California license number on file is A130299, one of the licenses on file in 2 states.
Which states has Dr. William Shyy been licensed in?
Dmand AI has state licenses on file for Dr. Shyy in California (2014 to 2025) and Illinois (2011 to 2014).
Which hospitals is Dr. William Shyy affiliated with?
Dr. Shyy is affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Dr. Shyy to 1 more hospital.
What medical group is Dr. William Shyy part of?
Dr. Shyy is linked to UCSF Medical Group. Dmand AI links Dr. Shyy to 4 more medical groups.
Does Dr. William Shyy accept Medicare?
Yes. CMS data shows Dr. Shyy billed Medicare for 560 services in 2024.
What is Dr. William Shyy's MIPS score?
Dr. Shyy's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. William Shyy see?
CMS counts 532 Medicare patients who saw Dr. Shyy in 2024, with an average age of 75.
Is Dr. William Shyy board certified?
Yes. Dr. Shyy is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. William Shyy bill to Medicare?
In 2024, Dr. Shyy's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Where did Dr. William Shyy go to medical school?
Dr. Shyy graduated from Carver College of Medicine in 2011.
What drugs does Dr. William Shyy prescribe most?
In 2023 Medicare Part D data, Dr. Shyy's most prescribed drugs by claims were Oxycodone-Acetaminophen and Oxycodone HCl.
Has Dr. William Shyy received payments from drug or device companies?
CMS Open Payments shows $248 in general payments to Dr. Shyy from 1 company from 2024 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. William Shyy been practicing?
Dr. Shyy graduated from medical school in 2011, 15 years ago.
Does Dr. William Shyy do research?
Dmand AI links 14 publications to Dr. Shyy, published from 2009 to 2023.
Who does Dr. William Shyy publish with?
Dr. Shyy's most frequent co-authors are Roneesha Starr Knight, MD (8 shared papers), Nathan A. Teismann, MD (6 shared papers) and Aaron Edward Kornblith, MD (2 shared papers).
What insurance does Dr. William Shyy accept?
Dr. Shyy is in network with 4 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and Elevance. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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