Doctor profile · Federal record
Dr. Thomas Assali, DO
Internal Medicine Physician (CMS: Internal Medicine) · Corona, CA
- NPI 1598225062
- Accepts Medicare
- 7 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
800 S Main St
Corona, CA 928823420
(951) 737-4343 - Additional location
-
1050 Linden Ave
Long Beach, CA 908133321
(562) 491-9140
fax (562) 491-9146 - Mailing address
-
250 E Rincon St Ste 106
Corona, CA 928791363
Credentials & registration
- NPI registered
- March 2019 — 7 yrs on file
- Profile last updated
- November 21, 2022
- Year of graduation
- 2019 — 7 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #20A19758
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598225062. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
236
Distinct HCPCS
4
Medicare allowed
$29,324
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 140 | 45 | $121 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 42 | 40 | $177 | |
99497 |
Advance care planning, first 30 minutes | 34 | 34 | $77 | |
99239 |
Hospital discharge day management, more than 30 minutes | 20 | 19 | $117 |
In context: peer comparison
Among 14 peers in this city , average services per provider: 90. This provider delivers 2.6× the peer median.Frequently asked questions
What is Dr. Thomas Assali's medical specialty?
Dr. Thomas Assali practices Internal Medicine Physician in Corona, CA.
Where does Dr. Thomas Assali practice?
Dr. Thomas Assali practices at 800 S Main St, Corona, CA 928823420. Office phone: 9517374343.
What is Dr. Thomas Assali's NPI?
Dr. Thomas Assali's National Provider Identifier (NPI) is 1598225062, issued by NPPES.
Does Dr. Thomas Assali accept Medicare assignment?
Yes. Dr. Thomas Assali accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Assali commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Advance care planning (HCPCS 99497). Source: CMS Medicare Physician & Other Practitioners file.