Tracy Ann Lyou, FNP
Family Nurse Practitioner · Ventura, CA
Tracy Ann Lyou, FNP is a family nurse practitioner with a practice address in Ventura, California, and NPI 1164766291, issued on Nov 15, 2012. Check the license (California 21535, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tracy Ann Lyou
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 21535 CA
Self-reported in NPPES; status is on the state search - Practice location
- 168 N Brent St, Ventura, CA 93003
- Phone
- (805) 641-2000
- Enumerated
- Nov 15, 2012
- Record last updated
- Feb 3, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (805) 641-5631
- Medicare enrollment
- Enrolled (PECOS I20150707000102); 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 168 N Brent St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tracy Ann Lyou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 21535Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,228 Medicare Part D claims for 249 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. 23 claims were for opioids.
Most prescribed
- Atorvastatin Calcium106 claims
- Levothyroxine Sodium87 claims
- Alendronate Sodium49 claims
- Losartan Potassium42 claims
- Omeprazole39 claims
- Ozempic38 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 MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $286.15
12 payments; by number, the most common kind was food and beverage; the largest payer was Amgen 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
- Dignity Health Medical FoundationOxnard, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tracy Ann Lyou among 16,966 family nurse practitioner records in California
Tracy Ann Lyou, 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 2012, is newer than 21% of them.
- NPI issued2012 · 21% of these records are older, 76% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2011 · median 2019 among the 6,793 with a school on file
- Record last updated2017 · 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).
53 family nurse practitioner records list a practice address in Ventura
They are 53 of the 4,435 NPPES records with a practice address in Ventura, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Ventura → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Theresa Broms, N.P.Ventura, CA 930031265531354
- Lindy Chavez, NPVentura, CA 930031669682191
- Maria Delgadillo, FNPVentura, CA 930031710103445
- Carrie Glenn, NP-CVentura, CA 930031235459124
- Graciela Hernandez, N.P.Ventura, CA 930031952547564
- Barbara Holdsworth, FNPVentura, CA 930031477747186
- Teresa Hong, NPVentura, CA 930031013251396
- Sharon Johanns, MSN FNPVentura, CA 930031356545636
Common questions
What is Tracy Ann Lyou, FNP's NPI number?
Tracy Ann Lyou, FNP's National Provider Identifier (NPI) is 1164766291, issued on Nov 15, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Tracy Ann Lyou, FNP located?
The NPPES record lists a practice address at 168 N Brent St, Ventura, CA, 93003. Phone: (805) 641-2000. Providers update this record themselves, so call before visiting.
How can I verify Tracy Ann Lyou, FNP's license?
NPPES lists California license number 21535, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Tracy Ann Lyou, FNP prescribe under Medicare Part D?
In 2024, Tracy Ann Lyou, FNP had 1,228 Medicare Part D claims for 249 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Tracy Ann Lyou, FNP's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.