Simon Maltais, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Thousand Oaks, CA
Simon Maltais, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Thousand Oaks, California, and NPI 1457665911, issued on Jul 27, 2010. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Simon Maltais
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 53401 MN
MD47528 TN
65433 WI
Self-reported in NPPES; status is on the state search - Practice location
- 227 W Janss RD Ste 340, Thousand Oaks, CA 91360
- Phone
- (805) 852-9100
- Enumerated
- Jul 27, 2010
- Record last updated
- May 20, 2025
- Fax
- (805) 852-9101
- Medicaid ID
- ENROLLED MN
- Medicare enrollment
- Enrolled (PECOS I20171117000009); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 227 W Janss RD Ste 340
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nels CarrollThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1396122099
- Asvin Ganapathi, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1013234061
- Kelly Hall, PA-CPhysician Assistant1710989439
- Asma Hussaini, PAPhysician Assistant1588893838
- Saibal Kar, M.D.Interventional Cardiology Physician1063449403
- Alyssa McNamara, PAPhysician Assistant1790511160
Verify Simon Maltais in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
51 Medicare Part D claims for 29 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $6,996.76
21 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 4,047 providers of this specialty with any payment received $7,828.84 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 3 group practices
- Great Falls Clinic LLCGreat Falls, MT
- Mchs Hospitals IncMarshfield, WI
- Poudre Valley Medical Group LLCPueblo, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in California
There are 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California.
Other thoracic surgery (cardiothoracic vascular surgery) physician records in California
- Kelechi Abanobi, M.DLos Angeles, CA1720236953
- Amir Abolhoda, MDOrange, CA1891875951
- Reginald Abraham, M DFountain Valley, CA1720042864
- Adrian Acuna HigakiLos Angeles, CA1831991454
- Robert Adamson, M.D.San Diego, CA1043292584
- Alaa Afifi, MDSanta Ana, CA1609802552
- Ricardo Aguirre, MDDanville, CA1699739219
- Palash Aiyer, MDSan Francisco, CA1649832213
- Andrew Akcelik, MDSan Francisco, CA1992298319
- Akbarshakh Akhmerov, MDWest Hollywood, CA1215464276
Common questions
What is Simon Maltais, MD's NPI number?
Simon Maltais, MD's National Provider Identifier (NPI) is 1457665911, issued on Jul 27, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Simon Maltais, MD located?
The NPPES record lists a practice address at 227 W Janss RD Ste 340, Thousand Oaks, CA, 91360. Phone: (805) 852-9100. Providers update this record themselves, so call before visiting.
How can I verify Simon Maltais, MD's license?
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 Simon Maltais, MD prescribe under Medicare Part D?
In 2024, Simon Maltais, MD had 51 Medicare Part D claims for 29 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. 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.