J Comput Assist Tomogr
Dr. Ann Noi Chi Leung, MD
- Medicare services, 2024
- 4,662
- Medicare patients, 2024
- 2,954
- Publications
- 101
- MIPS score, 2024
- 89
- Hospital affiliations
- 5
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Ann Noi Chi Leung is a diagnostic radiologist in Stanford, California
Dr. Leung practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Leung's NPI, 1104925874, was assigned on September 21, 2006. Dr. Leung graduated from University of British Columbia in 1986. Dr. Leung holds California license A52329.
- NPI
- 1104925874NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072686997
- NPI enumeration date
- September 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ann Noi Chi Leung practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Leung's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. Ann Noi Chi Leung is affiliated with 5 sites of care and 2 medical groups
Dr. Leung's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dr. Leung is also affiliated with Santa Clara Valley Medical Center. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Leung to 3 more hospitals and 1 medical group, each named with a free account. Dr. Leung's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ann Noi Chi Leung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leung practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ann Noi Chi Leung is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Leung's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Leung is board certified in diagnostic radiology by the American Board of Radiology. Dr. Leung is licensed in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near Dr. Leung
Counts of diagnostic radiologists 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. Ann Noi Chi Leung billed Medicare for 4,662 services in 2024
CMS data shows 4,662 Medicare services from Dr. Leung across 10 procedure codes in 2024, for 2,954 Medicare patients. Medicare paid $71,031 for them.
Dr. Leung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 4,1822024: 4,66211%
Where Dr. Leung's Medicare services took place, 2024
- In an office60713%
- In a facility4,05587%
Dr. Leung compared with the California median for diagnostic radiologists, 2024
- Dr. Leung
- California median
- Medicare services
- 4,662vs 2,2812.0 times
- Medicare patients
- 2,954vs 1,3462.2 times
Medians across 3,734 diagnostic radiologists 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leung and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ann Noi Chi Leung treated 2,954 Medicare patients in 2024, average age 74
CMS counts 2,954 Medicare patients who saw Dr. Leung in 2024. The largest group is 65 to 74, with 1,141 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.35, 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. Leung's median patient age at 58, with 47% women.
Dr. Leung's Medicare patients by age, 2024
Dr. Leung's Medicare patients by sex, 2024
- Women1,52752%
- Men1,42748%
Chronic conditions among Dr. Leung's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease45%
- Chronic kidney disease42%
- Arthritis39%
- Diabetes38%
- Atrial fibrillation37%
- Heart failure36%
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 58
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ann Noi Chi Leung scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Leung for performance year 2024, reported as part of a group. Dr. Leung accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Leung's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ann Noi Chi Leung has 101 publications on record
Dmand AI links 101 papers to Dr. Leung, published from 2003 to 2024. 2021 was the busiest year, with 7. The most frequent topics are Tomography, X-Ray Computed, Lung Neoplasms and Lung. Dr. Leung has published most often in Radiology. Dr. Leung's most frequent co-authors are Gerald J. Berry, MD, Leah Monique Backhus, MD and Daniel Lee Rubin, MD.
Dr. Leung's papers by year, 2014 to 2024
Topics Dr. Leung writes about most
- Tomography, X-Ray Computed
- Lung Neoplasms
- Lung
- Radiography, Thoracic
- Lung Diseases
- Image Processing, Computer-Assisted
- Observer Variation
- Radiography
Dr. Leung's most frequent co-authors
- Gerald J. Berry, MD9 shared papers
- Leah Monique Backhus, MD8 shared papers
- Daniel Lee Rubin, MD8 shared papers
Recent publications by Dr. Leung
Semin Ultrasound CT MR
JAMA Netw Open
See who Dr. Leung researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leung works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ann Noi Chi Leung received $83 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Leung from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Portola Pharmaceuticals, LLC paid the most, $83.
Companies that paid Dr. Leung the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ann Noi Chi Leung graduated from University of British Columbia
Dr. Leung graduated from University of British Columbia in 1986.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Ann Noi Chi Leung accepts plans from 4 insurance carriers
Dr. Leung is in network with 4 carriers, including Excellus BlueCross BlueShield, AK State Medicaid and CMS Medicare. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- AK State Medicaid
- CMS Medicare
- NV State Medicaid
Plan types Dr. Leung accepts, by number of carriers
- Medicaid2
- Medicare2
- EPO1
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ann Noi Chi 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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)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. Ann Noi Chi 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. Ann Noi Chi Leung's NPI number?
Dr. Ann Noi Chi Leung's NPI number is 1104925874. It was assigned on September 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ann Noi Chi Leung?
Dr. Ann Noi Chi Leung is a diagnostic radiologist in Stanford, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Ann Noi Chi Leung practice?
Dr. Leung practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Leung's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Leung to 3 hospitals and 1 medical group.
What is Dr. Ann Noi Chi Leung's office phone number?
The practice phone on file for Dr. Leung is (650) 723-4000.
What is Dr. Ann Noi Chi Leung's medical license number?
Dr. Leung holds California license A52329.
Which hospitals is Dr. Ann Noi Chi Leung affiliated with?
Dr. Leung practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dr. Leung is also affiliated with Santa Clara Valley Medical Center. Dmand AI links Dr. Leung to 3 more hospitals.
What medical group is Dr. Ann Noi Chi Leung part of?
Dr. Leung is linked to Stanford Health Care. Dmand AI links Dr. Leung to 1 more medical group.
Does Dr. Ann Noi Chi Leung accept Medicare?
Yes. CMS data shows Dr. Leung billed Medicare for 4,662 services in 2024, and Dr. Leung accepts Medicare assignment.
What is Dr. Ann Noi Chi Leung's MIPS score?
Dr. Leung's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ann Noi Chi Leung see?
CMS counts 2,954 Medicare patients who saw Dr. Leung in 2024, with an average age of 74.
Show 8 more questionsShow fewer questions
Is Dr. Ann Noi Chi Leung board certified?
Yes. Dr. Leung is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Ann Noi Chi Leung bill to Medicare?
In 2024, Dr. Leung's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (71046) and diagnostic imaging (71250).
Where did Dr. Ann Noi Chi Leung go to medical school?
Dr. Leung graduated from University of British Columbia in 1986.
Has Dr. Ann Noi Chi Leung received payments from drug or device companies?
CMS Open Payments shows $83 in general payments to Dr. Leung from 1 company from 2019 to 2019. The largest total came from Portola Pharmaceuticals, LLC.
How long has Dr. Ann Noi Chi Leung been practicing?
Dr. Leung graduated from medical school in 1986, 40 years ago.
Does Dr. Ann Noi Chi Leung do research?
Dmand AI links 101 publications to Dr. Leung, published from 2003 to 2024.
Who does Dr. Ann Noi Chi Leung publish with?
Dr. Leung's most frequent co-authors are Gerald J. Berry, MD (9 shared papers), Leah Monique Backhus, MD (8 shared papers) and Daniel Lee Rubin, MD (8 shared papers).
What insurance does Dr. Ann Noi Chi Leung accept?
Dr. Leung is in network with 4 carriers, including Excellus BlueCross BlueShield, AK State Medicaid and CMS Medicare. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
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