Siok-Hian Tay-Kelley, NP
Adult Health Nurse Practitioner · Stanford, CA
Siok-Hian Tay-Kelley, NP is an adult health nurse practitioner with a practice address in Stanford, California, and NPI 1568766442, issued on Jan 6, 2011. Check the license (California 19493, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Siok-Hian Tay-Kelley
- Credential
- NP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License numbers
- 19493 CA
3322 CA
Self-reported in NPPES; status is on the state search - Practice location
- 875 Blake Wilbur Drive, Stanford, CA 94305
- Phone
- (650) 498-6000
- Enumerated
- Jan 6, 2011
- Record last updated
- Sep 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 1,405 in California → Look up another NPI →
Also registered at 875 Blake Wilbur Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Siok-Hian Tay-Kelley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 19493Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
56 Medicare Part D claims for 12 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.
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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $594.94
5 payments; by number, the most common kind was food and beverage; the largest payer was Exelixis Inc. The 12,291 providers of this specialty with any payment received $946.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Siok-Hian Tay-Kelley among 1,405 adult health nurse practitioner records in California
Siok-Hian Tay-Kelley, NP is one of 1,405 adult health nurse practitioner records with a practice address in California. 56% 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 41% of them.
- NPI issued2011 · 41% of these records are older, 53% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · 31% of these records are
- Record last updated2016 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in California
There are 1,405 adult health nurse practitioner records in California.
All 1,405 in California → Every provider in Stanford → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Matthew Burke, APRNStanford, CA 943051134430135
- Dana Dolce, CRNPStanford, CA 943051548329865
- Donna Garay, ANP-BCStanford, CA 943051619244480
- Heather Grant, AGPCNP-BCStanford, CA 943051821731506
- Gregory Moran, N.P.Stanford, CA 943051780006916
- Cheryl Passanisi, NPStanford, CA 943051497122360
- Nancy Quinn, N.P.Stanford, CA 943051427190511
- Margaret Tolbert, NPStanford, CA 943051124018726
Common questions
What is Siok-Hian Tay-Kelley, NP's NPI number?
Siok-Hian Tay-Kelley, NP's National Provider Identifier (NPI) is 1568766442, issued on Jan 6, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Siok-Hian Tay-Kelley, NP located?
The NPPES record lists a practice address at 875 Blake Wilbur Drive, Stanford, CA, 94305. Phone: (650) 498-6000. Providers update this record themselves, so call before visiting.
How can I verify Siok-Hian Tay-Kelley, NP's license?
NPPES lists California license number 19493, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Siok-Hian Tay-Kelley, NP prescribe under Medicare Part D?
In 2024, Siok-Hian Tay-Kelley, NP had 56 Medicare Part D claims for 12 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
What is Siok-Hian Tay-Kelley, NP'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.