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

Sean Henry Tretiak, MD

Individual provider Anesthesiology Physician · NPI 1427077569

Sean Henry Tretiak, MD is an Anesthesiology in Torrance, California. Graduated from George Washington University School of Medicine in 1996, 30 years ago. Practices with Torrance Anesthesia Medical Group Inc, a 48-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
30
Trained at
George Washington University School of Medicine
Licensed in
CA
In the registry since
2006
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

3330 Lomita Blvd
Torrance, CA 90505-5002
Phone: (310) 325-9110
Fax: (310) 784-8762
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A65535 (CA)

Record details

NPI number1427077569
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 19, 2006
Last updated in NPPESJuly 25, 2017

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Torrance Anesthesia Medical Group Inc. — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Torrance