Stephen Ku, M.D.
Endocrinology, Diabetes & Metabolism Physician · Stanford, CA
Stephen Ku, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Stanford, California, and NPI 1477846947, issued on May 17, 2011. Check the license (California A121292, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Ku
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A121292 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- May 17, 2011
- Record last updated
- Apr 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20130510000117); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
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Verify Stephen Ku in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A121292Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- 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.
Stephen Ku among 1,131 endocrinology, diabetes & metabolism physician records in California
Stephen Ku, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2010 · median 2003 among the 779 with a school on file
- Record last updated2024 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Stanford → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Justin Annes, M.D.Stanford, CA 943051013027424
- Marina Basina, MDStanford, CA 943051023196805
- Carlos Camargo, M.D.Stanford, CA 943051831233253
- Ajay Chawla, MD, PHDStanford, CA 943051154457315
- Neil Gesundheit, MDStanford, CA 943051871629030
- Andrew Hoffman, M.D.Stanford, CA 943051619924685
- Fredric Kraemer, MDStanford, CA 943051780796037
- Jennifer Lee, M.D.Stanford, CA 943051558455071
Common questions
What is Stephen Ku, M.D.'s NPI number?
Stephen Ku, M.D.'s National Provider Identifier (NPI) is 1477846947, issued on May 17, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Ku, M.D. 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 Stephen Ku, M.D.'s license?
NPPES lists California license number A121292, 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.
What is Stephen Ku, M.D.'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.