Dr. Karen Ka Yiu Leong, MD
- Medicare services, 2022
- 11
- Medicare patients, 2024
- 16
- Part D claims, 2024
- 30
- Publications
- 4
- Industry payments
- $9,825
- Practice address
- 681 S Parker St, Suite 150, Orange, CA 92868
- Practice phone
- Call (714) 744-0900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
La Veta Surgical Center
Surgery Center - Medicare-Certified · Orange, California
Find Dr. Leong'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. Karen Ka Yiu Leong is a plastic surgeon in Orange, California
Dr. Leong practices at La Veta Surgical Center in Orange, California.
Dr. Leong's NPI, 1922236009, was assigned on June 26, 2009. Dr. Leong graduated from Drexel University College Of Medicine in 2009. Dr. Leong holds California license A139267.
- NPI
- 1922236009NPI Registry (opens in a new tab)
- NPI enumeration date
- June 26, 2009
- NPI status
- Active
- Practice phone
- (714) 744-0900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Karen Ka Yiu Leong practices at La Veta Surgical Center in Orange, California
Dr. Leong's primary practice is La Veta Surgical Center, at 681 S Parker St, Suite 150, Orange, CA 92868. The practice phone is (714) 744-0900.
- La Veta Surgical Center681 S Parker St, Suite 150, Orange, CA 92868Phone(714) 744-0900
Source: Dmand AI Affiliation Data
Dr. Karen Ka Yiu Leong is affiliated with 3 sites of care and 1 medical group
Dr. Leong's primary practice is La Veta Surgical Center in Orange, California. The medical group on file is ZENA Medical. Dmand AI also links Dr. Leong to 1 more physician office and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karen Ka Yiu Leong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leong practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| La Veta Surgical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karen Ka Yiu Leong is one of 778 plastic surgeons in California
Plastic surgery is Dr. Leong's primary specialty in the NPI Registry, under taxonomy code 208200000X. Dr. Leong is board certified in plastic surgery by the American Board of Plastic Surgery. Dmand AI has Dr. Leong's licenses on file in 2 states: California and Rhode Island.
Specialties and state licenses
- Plastic surgery, CaliforniaPrimary
- Surgery, Rhode Island
Plastic surgeons near Dr. Leong
Counts of plastic surgeons 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. Karen Ka Yiu Leong billed Medicare for 11 services in 2022
CMS data shows 11 Medicare services from Dr. Leong across 1 procedure code in 2022, for 16 Medicare patients. Medicare paid $3,899 for them. Every service was in an office.
Dr. Leong compared with the California median for plastic surgeons, 2022
- Dr. Leong
- California median
- Medicare services
- 11vs 5881% below
- Medicare patients
- 16vs 5973% below
- Part D claims
- 15vs 2642% below
Medians across 622 plastic surgeons in California with Dmand AI profiles that report each measure.
Dr. Leong's most billed Medicare procedure codes, 2022
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. Leong?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leong and other plastic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen Ka Yiu Leong treated 16 Medicare patients in 2024, average age 79
CMS counts 16 Medicare patients who saw Dr. Leong in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leong's median patient age at 51, with 100% women.
Chronic conditions among Dr. Leong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women100%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen Ka Yiu Leong wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Leong wrote 30 Medicare Part D claims. 97% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $51 in total drug cost. In 2017, CMS named 13 claims across 1 drug.
Dr. Leong's Part D claims by kind of drug, 2024
- Generic29 claims97%
- Brand-name and other1 claims3%
Dr. Leong's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2021
- 2017
- 2021
- Claims for drugs CMS names
- 2017: 132021: 1515%
Drugs named by CMS: 1 in 2021, 1 in 2017.
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. Karen Ka Yiu Leong has 4 publications on record
Dmand AI links 4 papers to Dr. Leong, published from 2016 to 2017. Dr. Leong's most frequent co-authors are Elizabeth Susan Harleman, MD, Melanie Thomas, MD and Delphine Sonya Tuot, MD.
Dr. Leong's most frequent co-authors
- Elizabeth Susan Harleman, MD1 shared paper
- Melanie Thomas, MD1 shared paper
- Delphine Sonya Tuot, MD1 shared paper
Recent publications by Dr. Leong
See who Dr. Leong researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leong works with, so you can find a warm path to the right plastic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Karen Ka Yiu Leong received $9,825 in industry payments from 2017 to 2025
CMS Open Payments shows 84 general payments to Dr. Leong from 21 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 50% of the total. Allergan Inc. paid the most, $4,940.
General payments to Dr. Leong by program year, 2017 to 2025
General payments to Dr. Leong by kind, 2017 to 2025
- Food and beverage$4,90750%
- Gifts$2,70027%
- Travel and lodging$1,58416%
- Device or supply loans$6346%
Companies that paid Dr. Leong the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen Ka Yiu Leong graduated from Drexel University College Of Medicine
Dr. Leong graduated from Drexel University College Of Medicine in 2009.
- Medical school
- Board certified in plastic surgery
Source: Dmand AI Professional Profile Data
Dr. Karen Ka Yiu Leong accepts plans from 5 insurance carriers
Dr. Leong is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Leong accepts, by number of carriers
- Medicare5
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Karen Ka Yiu Leong'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 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) |
| 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. Karen Ka Yiu Leong
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. Karen Ka Yiu Leong's NPI number?
Dr. Karen Ka Yiu Leong's NPI number is 1922236009. It was assigned on June 26, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Ka Yiu Leong?
Dr. Karen Ka Yiu Leong is a plastic surgeon in Orange, California. The primary specialty in the NPI Registry is Plastic Surgery Physician (taxonomy code 208200000X).
Where does Dr. Karen Ka Yiu Leong practice?
Dr. Leong practices at 681 S Parker St, Suite 150, Orange, CA 92868. Dr. Leong's primary practice is La Veta Surgical Center in Orange, California. Dmand AI also links Dr. Leong to 1 physician office and 1 group practice or clinic.
What is Dr. Karen Ka Yiu Leong's office phone number?
The practice phone on file for Dr. Leong is (714) 744-0900.
What is Dr. Karen Ka Yiu Leong's medical license number?
Dr. Leong holds California license A139267, one of the licenses on file in 2 states.
Which states has Dr. Karen Ka Yiu Leong been licensed in?
Dmand AI has state licenses on file for Dr. Leong in California (2015 to 2027) and Rhode Island (2009 to 2016).
What medical group is Dr. Karen Ka Yiu Leong part of?
Dr. Leong is linked to ZENA Medical.
Does Dr. Karen Ka Yiu Leong accept Medicare?
Yes. CMS data shows Dr. Leong billed Medicare for 11 services in 2022.
How many Medicare patients does Dr. Karen Ka Yiu Leong see?
CMS counts 16 Medicare patients who saw Dr. Leong in 2024, with an average age of 79.
Is Dr. Karen Ka Yiu Leong board certified?
Yes. Dr. Leong is board certified in plastic surgery by the American Board of Plastic Surgery.
Show 8 more questionsShow fewer questions
What services does Dr. Karen Ka Yiu Leong bill to Medicare?
In 2022, Dr. Leong's most billed Medicare services were surgery: skin and soft tissue (13131).
Where did Dr. Karen Ka Yiu Leong go to medical school?
Dr. Leong graduated from Drexel University College Of Medicine in 2009.
What drugs does Dr. Karen Ka Yiu Leong prescribe most?
In 2021 Medicare Part D data, Dr. Leong's most prescribed drugs by claims were Cephalexin.
Has Dr. Karen Ka Yiu Leong received payments from drug or device companies?
CMS Open Payments shows $9,825 in general payments to Dr. Leong from 21 companies from 2017 to 2025. The largest total came from Allergan Inc.
How long has Dr. Karen Ka Yiu Leong been practicing?
Dr. Leong graduated from medical school in 2009, 17 years ago.
Does Dr. Karen Ka Yiu Leong do research?
Dmand AI links 4 publications to Dr. Leong, published from 2016 to 2017.
Who does Dr. Karen Ka Yiu Leong publish with?
Dr. Leong's most frequent co-authors are Elizabeth Susan Harleman, MD (1 shared paper), Melanie Thomas, MD (1 shared paper) and Delphine Sonya Tuot, MD (1 shared paper).
What insurance does Dr. Karen Ka Yiu Leong accept?
Dr. Leong is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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