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

Michelle Tomassi, MD

Individual provider Emergency Medicine Physician · NPI 1710166749

Michelle Tomassi, MD is an Emergency Medicine in Downey, California. Qualified in 2002, 24 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group and accepts Medicare assignment. Licensed in California and New York.

Years since qualifying
24
Licensed in
CA, NY
In the registry since
2007
Specialties on file
2
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

9333 Imperial Hwy
Downey, CA 90242-2812
Phone: (562) 657-7130
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence C138956 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 246488 (NY)

Record details

NPI number1710166749
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 26, 2007
Last updated in NPPESNovember 22, 2021
Mailing address393 E Walnut St Fl 3, Pasadena, CA 91188-0001

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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