Sari Williams, RN, FNP
Family Nurse Practitioner · Duarte, CA
Sari Williams, RN, FNP is a family nurse practitioner with a practice address in Duarte, California, and NPI 1295272201, issued on Jan 28, 2017. Check the license (California 95005967, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sari Williams
- Credential
- RN, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95005967 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Duarte RD, Duarte, CA 91010
- Phone
- (626) 256-4673
- Enumerated
- Jan 28, 2017
- Record last updated
- Nov 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171227002547); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- 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 Sari Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95005967Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,036 Medicare Part D claims for 157 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 519 claims were for opioids.
Most prescribed
- Oxycodone Hcl134 claims
- Gabapentin80 claims
- Fentanyl74 claims
- Methadone Hcl59 claims
- Pregabalin51 claims
- Hydrocodone-Acetaminophen49 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: $267.41
7 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, 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).
Sari Williams among 16,966 family nurse practitioner records in California
Sari Williams, RN, FNP 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 2017, is newer than 40% of them.
- NPI issued2017 · 40% of these records are older, 55% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2016 · 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 Sari Williams, RN, FNP's NPI number?
Sari Williams, RN, FNP's National Provider Identifier (NPI) is 1295272201, issued on Jan 28, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Sari Williams, RN, FNP located?
The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.
How can I verify Sari Williams, RN, FNP's license?
NPPES lists California license number 95005967, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Sari Williams, RN, FNP prescribe under Medicare Part D?
In 2024, Sari Williams, RN, FNP had 1,036 Medicare Part D claims for 157 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Sari Williams, RN, FNP'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.