Doctor profile · Federal record
Dr. Monica Tsai
Allergy & Immunology (Internal Medicine) Physician (CMS: Internal Medicine) · Internal Medicine Physician · Orange, CA
- NPI 1598176497
- Accepts Medicare
- MIPS 84.9 / 100 · 2023
- 12 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
101 the City Dr S
Orange, CA 928683201
(714) 456-8888 - Additional location
-
1245 16Th St Ste 303
Santa Monica, CA 904041265
(310) 481-4646
fax (310) 899-7599 - Additional location
-
3500 Lomita Blvd Ste 300
Torrance, CA 905055038
(310) 257-0028
fax (310) 227-0031 - Mailing address
-
5767 W Century Blvd Ste 400
Los Angeles, CA 900455631
Credentials & registration
- NPI registered
- May 2014 — 12 yrs on file
- Profile last updated
- January 16, 2026
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207RA0201X — NUCC code
- State license (1)
- California #A142506
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598176497. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$128
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 1 | $128.23 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
25
Patients
0
Total drug cost
$46,169
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azelastine Hcl | Generic | 13 | 0 | $536 |
| Dupixent Syringe (Dupilumab) | Brand | 12 | 0 | $45,633 |
Frequently asked questions
What is Dr. Monica Tsai's medical specialty?
Dr. Monica Tsai practices Allergy & Immunology (Internal Medicine) Physician in Orange, CA.
Where does Dr. Monica Tsai practice?
Dr. Monica Tsai practices at 101 the City Dr S, Orange, CA 928683201. Office phone: 7144568888.
What is Dr. Monica Tsai's NPI?
Dr. Monica Tsai's National Provider Identifier (NPI) is 1598176497, issued by NPPES.
Does Dr. Monica Tsai accept Medicare assignment?
Yes. Dr. Monica Tsai accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.