Thomas Assali, DO
NPI 1598225062 · Internal Medicine Physician · Corona, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Assali, DO is a Internal Medicine Physician provider in Corona, CA (NPI 1598225062).
Provider details
- NPI number
- 1598225062
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A19758 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 25 | 18 |
| Meloxicam | 25 | 14 |
| Atorvastatin Calcium | 23 | 19 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 21 | 19 |
| Prednisone | 19 | 17 |
| Azithromycin | 18 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass |
Practice location
Mailing address
Additional practice locations (1)
- 1050 Linden AveLong Beach, CA 90813-3321Phone: (562) 491-9140Fax: (562) 491-9146
Registry dates
- Enumerated
- 2019-03-21
- Last updated
- 2022-11-21
- Certified
- 2022-06-19
Frequently asked questions
- What is Thomas Assali's NPI number?
- Thomas Assali's National Provider Identifier (NPI) is 1598225062, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Assali's specialty?
- Thomas Assali is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Assali located?
- Thomas Assali's practice location on file with NPPES is 800 S Main St, Corona, CA 92882-3420.
- What is Thomas Assali's phone number?
- The practice phone number listed in the NPPES registry for Thomas Assali is (951) 737-4343.
- Does Thomas Assali accept Medicare?
- Thomas Assali is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Assali's NPI active?
- Yes — Thomas Assali's NPI (1598225062) is active in the NPPES registry as of the last update on 2022-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.