Yann Dacquay
Hospitalist Physician · Thousand Oaks, CA
Yann Dacquay is a hospitalist physician with a practice address in Thousand Oaks, California, and NPI 1639819634, issued on Mar 30, 2022. Check the license (California 21898, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yann Dacquay
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 21898 CA
Self-reported in NPPES; status is on the state search - Practice location
- 215 W Janss RD, Thousand Oaks, CA 91360
- Phone
- (805) 497-2727
- Enumerated
- Mar 30, 2022
- Record last updated
- Oct 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20251013002187); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 215 W Janss RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Abadir, MDStudent in an Organized Health Care Education/Training Program1609578152
- Danny Abdalnour, MDStudent in an Organized Health Care Education/Training Program1598613705
- Sara Abdel AzimStudent in an Organized Health Care Education/Training Program1760284384
- Ziad Abdullatif, D.O.Student in an Organized Health Care Education/Training Program1710689419
- Bianca Abramian, MDStudent in an Organized Health Care Education/Training Program1649118332
- Rehman Afraz, MDStudent in an Organized Health Care Education/Training Program1265370407
Verify Yann Dacquay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 21898Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average hospitalist physician in 2024
96 Medicare Part D claims for 39 beneficiaries, against an average of 521 among the 21,613 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.
Industry payments in 2024: $30.49
1 payment: food and beverage; the largest payer was Amgen Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- Life Medical PractitionersSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yann Dacquay among 3,099 hospitalist physician records in California
Yann Dacquay is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 2% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2022 · median 2010 among the 2,505 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Thousand Oaks → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Gholamreza Badiee, M.D.Thousand Oaks, CA 913601841561784
- Asra Farooqui, MDThousand Oaks, CA 913601437286796
- Geoffrey Graham, M.D.Thousand Oaks, CA 913601356343073
- Mahvand SadeghiThousand Oaks, CA 913601982019014
- Ann Seide, MDThousand Oaks, CA 913601649203084
- Jasprit Takher, M.D.Thousand Oaks, CA 913601235489709
- Aamir Iqbal, M.D.Thousand Oaks, CA 913611174054019
- Anitha Srinivasa, M.D.Westlake Village, CA 913611306876149
Common questions
What is Yann Dacquay's NPI number?
Yann Dacquay's National Provider Identifier (NPI) is 1639819634, issued on Mar 30, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Yann Dacquay located?
The NPPES record lists a practice address at 215 W Janss RD, Thousand Oaks, CA, 91360. Phone: (805) 497-2727. Providers update this record themselves, so call before visiting.
How can I verify Yann Dacquay's license?
NPPES lists California license number 21898, 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 Yann Dacquay prescribe under Medicare Part D?
In 2024, Yann Dacquay had 96 Medicare Part D claims for 39 beneficiaries; the average among hospitalist physician prescribers was 521. 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.