NPPES file of Aug 9, 2026

Kenneth Karkay Leung, MD

Neuromuscular Medicine (Psychiatry & Neurology) Physician · Stanford, CA

Kenneth Karkay Leung, MD is a neuromuscular medicine (psychiatry & neurology) physician with a practice address in Stanford, California, and NPI 1801259007, issued on Apr 4, 2016. Check the license (California 161172, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801259007
Name
Kenneth Karkay Leung
Credential
MD
Primary taxonomy
Neuromuscular Medicine (Psychiatry & Neurology) Physician 2084N0008X
License number
161172 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(650) 723-4000
Enumerated
Apr 4, 2016
Record last updated
Nov 10, 2023
Medicare enrollment
Enrolled (PECOS I20210614000505); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 300 Pasteur Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Kenneth Karkay Leung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 161172
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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70% fewer Medicare Part D claims than the average neuromuscular medicine (psychiatry & neurology) physician in 2024

250 Medicare Part D claims for 58 beneficiaries, against an average of 827 among the 258 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Kenneth Leung250
  2. Specialty average827

Most prescribed

  1. Gabapentin40 claims
  2. Prednisone23 claims
  3. Radicava Ors23 claims
  4. Riluzole19 claims
  5. Mycophenolate Mofetil13 claims
  6. Levetiracetam12 claims

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): 76.5 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.

  1. Qualityout of 100 · 30% of the final score74.3
  2. Costout of 100 · 30%44.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

One hospital affiliation

  1. Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Kenneth Karkay Leung among 38 neuromuscular medicine (psychiatry & neurology) physician records in California

Kenneth Karkay Leung, MD is one of 38 neuromuscular medicine (psychiatry & neurology) physician records with a practice address in California. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 74% of them.

  • NPI issued2016 · 74% of these records are older, 16% newer
  • In a Medicare fileYes · 95% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated2016 · median 2009 among the 33 with a school on file
  • Record last updated2023 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0008X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neuromuscular Medicine (Psychiatry & Neurology) Physician providers in California

There are 38 neuromuscular medicine (psychiatry & neurology) physician records in California.

The 8 neuromuscular medicine (psychiatry & neurology) physician records with the nearest ZIP codes

  1. John Day, MDStanford, CA 943051447291992
  2. Maxwell Greene, MDStanford, CA 943051720372576
  3. Kathie Lin, M.D.Stanford, CA 943051053726729
  4. Sarada Sakamuri, MDStanford, CA 943051275794612
  5. Jacinda Sampson, MD, PHDStanford, CA 943051427000710
  6. Yuen So, MDStanford, CA 943051891821401
  7. Gabrielle Dufort, MDPalo Alto, CA 943041831923812
  8. Christine LuPalo Alto, CA 943041881080786

Common questions

What is Kenneth Karkay Leung, MD's NPI number?

Kenneth Karkay Leung, MD's National Provider Identifier (NPI) is 1801259007, issued on Apr 4, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Kenneth Karkay Leung, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Kenneth Karkay Leung, MD's license?

NPPES lists California license number 161172, 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 Kenneth Karkay Leung, MD prescribe under Medicare Part D?

In 2024, Kenneth Karkay Leung, MD had 250 Medicare Part D claims for 58 beneficiaries; the average among neuromuscular medicine (psychiatry & neurology) physician prescribers was 827. Part D covers Medicare prescriptions only.

What is Kenneth Karkay Leung, MD's MIPS final score?

The 2023 MIPS final score is 76.5 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.