Doctor profile · Federal record
Dr. Tjoson Tjoa, M.D.
Otolaryngology Physician (CMS: Otolaryngology) · Plastic Surgery Within the Head & Neck (Otolaryngology) Physician · Orange, CA
- NPI 1235450958
- Accepts Medicare
- MIPS 91.2 / 100 · 2023
- 16 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
101 the City Dr S
Orange, CA 928683201
(714) 456-8888
fax (714) 456-8888 - Additional location
-
243 Charles St
Boston, MA 021143002
(617) 573-3654
fax (617) 573-3939 - Mailing address
-
200 S Manchester Ave
Orange, CA 928683217
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- June 3, 2025
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207Y00000X — NUCC code
- State licenses (2)
- California #A119742 · Massachusetts #262971
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235450958. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
588
Distinct HCPCS
9
Medicare allowed
$70,403
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 183 | 114 | $104 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 151 | 112 | $70 | |
31575 |
Diagnostic exam of voice box using a flexible endoscope | 142 | 93 | $75 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 36 | 36 | $143 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 20 | 20 | $194 | |
38724 |
Removal of lymph nodes, muscle, and tissue of neck | 16 | 16 | $930 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 15 | $154 | |
10005 |
Fine needle aspiration biopsy using ultrasound guidance, first growth | 14 | 13 | $73 | |
15004 |
Preparation of skin graft site of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 100.0 sq cm or 1% body area for infants and children, or less | 11 | 11 | $279 |
In context: peer comparison
Among 5 peers in Orange Otolaryngology Physician, average services per provider: 80. This provider delivers 7.4× the peer median.Open Payments
Industry payments received
All-time total
$234
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inspire Medical Systems, INC. | 1 | $126.02 | |
| Medtronic, INC. | 1 | $107.92 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
85
Patients
27
Total drug cost
$2,284
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pentoxifylline | Generic | 34 | 0 | $1,440 |
| Levothyroxine Sodium | Generic | 21 | 11 | $298 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 18 | 16 | $271 |
| Gabapentin | Generic | 12 | 0 | $275 |
Frequently asked questions
What is Dr. Tjoson Tjoa's medical specialty?
Dr. Tjoson Tjoa practices Otolaryngology Physician in Orange, CA.
Where does Dr. Tjoson Tjoa practice?
Dr. Tjoson Tjoa practices at 101 the City Dr S, Orange, CA 928683201. Office phone: 7144568888.
What is Dr. Tjoson Tjoa's NPI?
Dr. Tjoson Tjoa's National Provider Identifier (NPI) is 1235450958, issued by NPPES.
Does Dr. Tjoson Tjoa accept Medicare assignment?
Yes. Dr. Tjoson Tjoa accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tjoson Tjoa commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Diagnostic exam of voice box using a flexible endoscope (HCPCS 31575). Source: CMS Medicare Physician & Other Practitioners file.