Doctor profile · Federal record
Dr. James Tsai, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Hemet, CA
- NPI 1437152857
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 29 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
201 N Laursen St
Hemet, CA 925434417
(951) 652-3333
fax (951) 652-8892
Credentials & registration
- NPI registered
- May 2005 — 21 yrs on file
- Profile last updated
- August 27, 2025
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #A70963
- Medicaid
- CA #00A709630
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437152857. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
7,662
Distinct HCPCS
10
Medicare allowed
$240,232
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 1,948 | 25 | $0 | |
J2405 |
Injection, ondansetron hydrochloride, per 1 mg | 1,863 | 15 | $0 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 592 | 231 | $132 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 531 | 156 | $132 | |
J1750 |
Injection, iron dextran, 50 mg | 486 | 18 | $17 | |
J7050 |
Infusion, normal saline solution, 250 cc | 382 | 34 | $1 | |
96372 |
Injection of drug or substance under skin or into muscle | 267 | 49 | $15 | |
J3420 |
Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 191 | 38 | $2 | |
96367 |
Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | 186 | 20 | $31 | |
96415 |
Administration of chemotherapy into vein, each additional hour | 177 | 11 | $30 |
In context: peer comparison
Among 2 peers in Hemet Hematology & Oncology Physician, average services per provider: 4,351. This provider delivers 1.8× the peer median.Open Payments
Industry payments received
All-time total
$280
Transactions
12
Manufacturers
10
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 3 | $59.71 | |
| Abbvie INC. | 1 | $32.19 | |
| Novartis Pharmaceuticals Corporation | 1 | $29.97 | |
| Pfizer INC. | 1 | $27.20 | |
| Janssen Biotech, INC. | 1 | $26.74 | |
| SpringWorks Therapeutics, INC. | 1 | $26.04 | |
| Genentech USA, INC. | 1 | $23.47 | |
| Daiichi Sankyo INC. | 1 | $19.52 | |
| Array Biopharma INC | 1 | $17.44 | |
| Acrotech Biopharma INC. | 1 | $17.29 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
547
Patients
50
Total drug cost
$908,363
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Anastrozole | Generic | 78 | 21 | $2,064 |
| Hydroxyurea | Generic | 66 | 11 | $1,542 |
| Ondansetron Hcl | Generic | 65 | 18 | $3,216 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 46 | 0 | $997 |
| Acyclovir | Generic | 44 | 0 | $895 |
| Dexamethasone | Generic | 37 | 0 | $664 |
| Pantoprazole Sodium | Generic | 36 | 0 | $535 |
| Promacta (Eltrombopag Olamine) | Brand | 29 | 0 | $725,825 |
| Prednisone | Generic | 28 | 0 | $330 |
| Aprepitant | Generic | 26 | 0 | $14,433 |
Frequently asked questions
What is Dr. James Tsai's medical specialty?
Dr. James Tsai practices Hematology & Oncology Physician in Hemet, CA.
Where does Dr. James Tsai practice?
Dr. James Tsai practices at 201 N Laursen St, Hemet, CA 925434417. Office phone: 9516523333.
What is Dr. James Tsai's NPI?
Dr. James Tsai's National Provider Identifier (NPI) is 1437152857, issued by NPPES.
Does Dr. James Tsai accept Medicare assignment?
Yes. Dr. James Tsai accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Tsai commonly perform?
Top Medicare-reported procedures in 2023: Injection, dexamethasone sodium phosphate, 1 mg (HCPCS J1100); Injection, ondansetron hydrochloride, per 1 mg (HCPCS J2405); Telephone medical discussion with physician (HCPCS 99443). Source: CMS Medicare Physician & Other Practitioners file.