Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Simon Maltais, MD

Individual provider Vascular Surgery Physician · NPI 1457665911

Simon Maltais, MD is a Cardiac Surgery in Thousand Oaks, California. Qualified in 2003, 23 years ago. Practices with Mchs Hospitals Inc, a 1,194-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Minnesota, Tennessee and Wisconsin.

Years since qualifying
23
Licensed in
MN, TN, WI
In the registry since
2010
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

227 W Janss Rd Ste 340
Thousand Oaks, CA 91360-1879
Phone: (805) 852-9100
Fax: (805) 852-9101
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1000 N Oak Ave, Marshfield, WI 54449-5703 — (715) 387-5511

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 53401 (MN)
Vascular Surgery Physician Taxonomy 2086S0129X · Licence MD47528 (TN)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 65433 (WI)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence MD47528 (TN)

Record details

NPI number1457665911
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 27, 2010
Last updated in NPPESMay 20, 2025
Certification dateMay 20, 2025
Mailing address227 W Janss Rd Ste 340, Thousand Oaks, CA 91360-1879

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIAC SURGERY
Also practisesTHORACIC SURGERY
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice McHs Hospitals Inc — 1194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations6 on file with Medicare

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