Dr. Ying Yan Y. Leung, MD
- Medicare services, 2024
- 527
- Medicare patients, 2024
- 74
- Part D claims, 2024
- 965
- Industry payments
- $1,370
- Affiliated sites
- 1
- Practice address
- 3038 S Hacienda Blvd, Hacienda Heights, CA 91745
- Practice phone
- Call (626) 961-5479
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Leung Y MD
Physician office · Hacienda Heights, California
Find Dr. Leung'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. Ying Yan Y. Leung is a general practice physician in Hacienda Heights, California
Dr. Leung practices at Leung Y MD in Hacienda Heights, California.
Dr. Leung's NPI, 1275612632, was assigned on November 4, 2006. Dr. Leung holds California license G43055.
- NPI
- 1275612632NPI Registry (opens in a new tab)
- NPI enumeration date
- November 4, 2006
- NPI status
- Active
- Practice phone
- (626) 961-5479
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ying Yan Y. Leung practices at Leung Y MD in Hacienda Heights, California
Dr. Leung's primary practice is Leung Y MD, at 3038 S Hacienda Blvd, Hacienda Heights, CA 91745. The practice phone is (626) 961-5479.
- Leung Y MD3038 S Hacienda Blvd, Hacienda Heights, CA 91745Phone(626) 961-5479
Source: Dmand AI Affiliation Data
Dr. Ying Yan Y. Leung is affiliated with 1 site of care
Dr. Leung's primary practice is Leung Y MD in Hacienda Heights, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ying Yan Y. Leung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leung practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Leung Y MD | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ying Yan Y. Leung is one of 1,526 general practice physicians in California
General practice is Dr. Leung's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Leung is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
General practice physicians near Dr. Leung
Counts of general practice 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. Ying Yan Y. Leung billed Medicare for 527 services in 2024
CMS data shows 527 Medicare services from Dr. Leung across 6 procedure codes in 2024, for 74 Medicare patients. Medicare paid $23,919 for them. Every service was in an office.
Dr. Leung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2332024: 30975%
- Tests and treatments
- 2023: 6842024: 13980%
- Other services
- 2023: 4372024: 7982%
- Drugs given in the office
- 2023: 2092024: 0100%
- Imaging
- 2023: 162024: 0100%
Dr. Leung compared with the California median for general practice physicians, 2024
- Dr. Leung
- California median
- Medicare services
- 527vs 2622.0 times
- Medicare patients
- 74vs 13646% below
- Part D claims
- 618vs 1923.2 times
Medians across 1,114 general practice physicians in California with Dmand AI profiles that report each measure.
Dr. Leung'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ying Yan Y. Leung treated 74 Medicare patients in 2024, average age 72
CMS counts 74 Medicare patients who saw Dr. Leung in 2024. The largest group is 65 to 74, with 39 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 38% are also on Medicaid. Their average risk score is 1.29, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leung's median patient age at 64, with 53% women.
Dr. Leung's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Leung's Medicare patients by sex, 2024
- Women4257%
- Men3243%
Chronic conditions among Dr. Leung's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis47%
- Diabetes46%
- Osteoporosis31%
- COPD27%
- Ischemic heart disease26%
- Chronic kidney disease16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leung's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ying Yan Y. Leung wrote 965 Medicare Part D claims in 2024
In 2024, Dr. Leung wrote 965 Medicare Part D claims for 99 patients. 88% of them were for generic drugs. CMS names the drug for 618 of them, across 26 drugs with 11 or more claims each, at $39,920 in total drug cost. In 2023, CMS named 1,158 claims across 46 drugs.
Dr. Leung's Part D claims by kind of drug, 2024
- Generic846 claims88%
- Brand-name103 claims11%
- Other16 claims2%
Dr. Leung's most prescribed drugs by claims, 2024
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. Leung's Part D claims, 2024
- Antibiotics4%43 of 965 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1582024: 61847%
Drugs named by CMS: 26 in 2024, 46 in 2023.
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
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Dr. Ying Yan Y. Leung received $1,370 in industry payments from 2016 to 2021
CMS Open Payments shows 20 general payments to Dr. Leung from 5 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $671.
General payments to Dr. Leung by program year, 2016 to 2021
Companies that paid Dr. Leung the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ying Yan Y. Leung'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Ying Yan Y. Leung
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. Ying Yan Y. Leung's NPI number?
Dr. Ying Yan Y. Leung's NPI number is 1275612632. It was assigned on November 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ying Yan Y. Leung?
Dr. Ying Yan Y. Leung is a general practice physician in Hacienda Heights, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Ying Yan Y. Leung practice?
Dr. Leung practices at 3038 S Hacienda Blvd, Hacienda Heights, CA 91745. Dr. Leung's primary practice is Leung Y MD in Hacienda Heights, California.
What is Dr. Ying Yan Y. Leung's office phone number?
The practice phone on file for Dr. Leung is (626) 961-5479.
What is Dr. Ying Yan Y. Leung's medical license number?
Dr. Leung holds California license G43055.
Does Dr. Ying Yan Y. Leung accept Medicare?
Yes. CMS data shows Dr. Leung billed Medicare for 527 services in 2024.
How many Medicare patients does Dr. Ying Yan Y. Leung see?
CMS counts 74 Medicare patients who saw Dr. Leung in 2024, with an average age of 72.
What services does Dr. Ying Yan Y. Leung bill to Medicare?
In 2024, Dr. Leung's most billed Medicare services were office visit, established patient (99213), physical therapy and rehabilitation (97035) and medicare service (G0283).
What drugs does Dr. Ying Yan Y. Leung prescribe most?
In 2024 Medicare Part D data, Dr. Leung's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Metformin HCl.
Has Dr. Ying Yan Y. Leung received payments from drug or device companies?
CMS Open Payments shows $1,370 in general payments to Dr. Leung from 5 companies from 2016 to 2021. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ying Yan Y. Leung been practicing?
Dr. Leung graduated from medical school in 1977, 49 years ago.
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