Sylvia Yoon
Family Nurse Practitioner · Duarte, CA
Sylvia Yoon is a family nurse practitioner with a practice address in Duarte, California, and NPI 1568919744, issued on Sep 6, 2016. Check the license (California NP95004090, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sylvia Yoon
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- NP95004090 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Duarte RD, Duarte, CA 91010
- Phone
- (626) 471-7100
- Enumerated
- Sep 6, 2016
- Record last updated
- Nov 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161111000511); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 1500 Duarte RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sylvia Yoon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP95004090Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family nurse practitioner in 2024
149 Medicare Part D claims for 56 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Ondansetron Odt14 claims
- Acyclovir13 claims
- Pantoprazole Sodium12 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): 99.1 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: $330.62
13 payments; by number, the most common kind was food and beverage; the largest payer was Sobi, Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Bills Medicare through one group practice
- City OF Hope Medical FoundationDuarte, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sylvia Yoon among 16,966 family nurse practitioner records in California
Sylvia Yoon is one of 16,966 family nurse practitioner records with a practice address in California. 67% 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 35% of them.
- NPI issued2016 · 35% of these records are older, 60% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2015 · median 2019 among the 6,793 with a school on file
- Record last updated2020 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
96 family nurse practitioner records list a practice address in Duarte
They are 96 of the 1,287 NPPES records with a practice address in Duarte, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Duarte → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Patricia Ash, NPDuarte, CA 910101477611549
- Elizabeth Bautista, NURSE PRACTITIONERDuarte, CA 910101609172303
- Rhodelynn BonnerDuarte, CA 910101043472988
- Gemmalin Endriga, NURSE PRACTITIONERDuarte, CA 910101821250929
- Marjorie Hein, FNPDuarte, CA 910101720244478
- Tracy Lammers, NPDuarte, CA 910101508002528
- Billie Lynes, NPDuarte, CA 910101750592424
- Lydia Mormann, FNPDuarte, CA 910101891965836
Common questions
What is Sylvia Yoon's NPI number?
Sylvia Yoon's National Provider Identifier (NPI) is 1568919744, issued on Sep 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Sylvia Yoon located?
The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 471-7100. Providers update this record themselves, so call before visiting.
How can I verify Sylvia Yoon's license?
NPPES lists California license number NP95004090, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Sylvia Yoon prescribe under Medicare Part D?
In 2024, Sylvia Yoon had 149 Medicare Part D claims for 56 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Sylvia Yoon's MIPS final score?
The 2023 MIPS final score is 99.1 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.