Joan Yvette Sy, D.O.
Family Medicine Physician · Laguna Hills, CA
Joan Yvette Sy, D.O. is a family medicine physician with a practice address in Laguna Hills, California, and NPI 1881710440, issued on Mar 22, 2007. Check the license (California 20A6587, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joan Yvette Sy
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A6587 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24953 Paseo DE Valencia, Laguna Hills, CA 92653
- Phone
- (949) 460-9200
- Enumerated
- Mar 22, 2007
- Record last updated
- Oct 10, 2022
- Fax
- (949) 470-9000
- Medicare enrollment
- Enrolled (PECOS I20080211000691); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 24953 Paseo DE Valencia
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joan Yvette Sy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A6587Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average family medicine physician in 2024
1,068 Medicare Part D claims for 98 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium123 claims
- Levothyroxine Sodium73 claims
- Farxiga45 claims
- Pravastatin Sodium45 claims
- Ezetimibe40 claims
- Losartan Potassium35 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.
Industry payments in 2024: $380.16
14 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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.
Joan Yvette Sy among 17,133 family medicine physician records in California
Joan Yvette Sy, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1993 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 family medicine physician records list a practice address in Laguna Hills
They are 36 of the 2,069 NPPES records with a practice address in Laguna Hills, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Laguna Hills → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Connor, MDLaguna Hills, CA 926531578536553
- Bernard Elpedes, DOLaguna Hills, CA 926531831127497
- Mark Foster, M.D.Laguna Hills, CA 926531548338908
- Chee Ho, D.O.Laguna Hills, CA 926531609820083
- Judy Huynh, D.O.Laguna Hills, CA 926531316934284
- Henry Leung, D.O.Laguna Hills, CA 926531881662690
- Martin Louie, M.D.Laguna Hills, CA 926531770519621
- Lisa Majer, D.OLaguna Hills, CA 926531003990748
Common questions
What is Joan Yvette Sy, D.O.'s NPI number?
Joan Yvette Sy, D.O.'s National Provider Identifier (NPI) is 1881710440, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joan Yvette Sy, D.O. located?
The NPPES record lists a practice address at 24953 Paseo DE Valencia, Laguna Hills, CA, 92653. Phone: (949) 460-9200. Providers update this record themselves, so call before visiting.
How can I verify Joan Yvette Sy, D.O.'s license?
NPPES lists California license number 20A6587, 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.
How much does Joan Yvette Sy, D.O. prescribe under Medicare Part D?
In 2024, Joan Yvette Sy, D.O. had 1,068 Medicare Part D claims for 98 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.