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MICHELLE TOMASSI MD
NPI 1710166749
Emergency Medicine in Downey, CA

Active since October 26, 2007PECOS EnrolledAccepts Medicare Assignment
9333 IMPERIAL HWY, DOWNEY, CA 90242(562) 657-7130 Get Directions Write a Review

NPPES record last updated: November 22, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 22, 2021, Feb 1, 2016 (2 updates tracked since 2016).

About Michelle Tomassi Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHELLE TOMASSI MD (NPI 1710166749) is an individual emergency medicine provider in Downey, California, licensed in California (C138956) and active in the NPI registry since October 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1710166749
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMICHELLE TOMASSICredential: MD
Location Address9333 IMPERIAL HWYDowney, CA 90242-2812
Mailing Address393 E Walnut St Fl 3Pasadena, CA 91188-0001 · (626) 405-5113 · Fax (877) 514-0903
Phone(562) 657-7130
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateOctober 26, 2007
Last NPPES UpdateNovember 22, 20212 updates tracked since enumeration
✔ NPI 1710166749 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CA · C138956✔ Licensed in NY · 246488
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
9333 IMPERIAL HWY, Downey, CA 90242
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michelle Tomassi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID244312015
PECOS Enrollment IDI20160226000107
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90242 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BRANDON LUI
Internal Medicine
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-9000
MICHAEL LUHM
Pharmacist
9333 IMPERIAL HWY, 1ST FLOOR OUTPATIENT PHARMACY
DOWNEY, CA 90242
Los Angeles County (562) 657-9421
ALAN H. QUIROZ
Respiratory Therapist, Registered (Neonatal/Pediatrics)
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-3389
DR. KIRAN PANDEY MD
Internal Medicine (Cardiovascular Disease)
9333 IMPERIAL HWY, DOWNEY
DOWNEY, CA 90242
Los Angeles County (877) 608-0044
DR. JOSEPH DANIEL GRUBIC
Emergency Medicine
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-7130
GRACE YAMASAKI PHARM.D.
Pharmacist
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-9422
LINDA CHAO
Pharmacist
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (833) 574-2273
DR. MARSHA ARABA MARTINSON M.D.
Obstetrics & Gynecology
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-4043

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michelle Tomassi's NPI number?

The NPI number for Michelle Tomassi is 1710166749. It was assigned to this individual provider in the NPPES registry on October 26, 2007.

Where is Michelle Tomassi located?

Michelle Tomassi practices at 9333 Imperial Hwy, Downey, CA 90242. The listed phone number is (562) 657-7130.

What is Michelle Tomassi's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Michelle Tomassi enrolled in Medicare?

Yes. Michelle Tomassi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Michelle Tomassi was last updated on November 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.