Michelle Tomassi, MD
NPI 1710166749 · Emergency Medicine Physician · Downey, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Tomassi, MD is a Emergency Medicine Physician provider in Downey, CA (NPI 1710166749).
Provider details
- NPI number
- 1710166749
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 246488 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 95 | 94 |
| Azithromycin | 77 | 77 |
| Cefpodoxime Proxetil | 68 | 68 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 63 | 63 |
| Prednisone | 63 | 63 |
| Doxycycline Monohydrate | 61 | 61 |
| Hydrocodone/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-10-26
- Last updated
- 2021-11-22
Frequently asked questions
- What is Michelle Tomassi's NPI number?
- Michelle Tomassi's National Provider Identifier (NPI) is 1710166749, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Tomassi's specialty?
- Michelle Tomassi is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michelle Tomassi located?
- Michelle Tomassi's practice location on file with NPPES is 9333 Imperial Hwy, Downey, CA 90242-2812.
- What is Michelle Tomassi's phone number?
- The practice phone number listed in the NPPES registry for Michelle Tomassi is (562) 657-7130.
- Does Michelle Tomassi accept Medicare?
- Michelle Tomassi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Tomassi's NPI active?
- Yes — Michelle Tomassi's NPI (1710166749) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.