Doctor profile · Federal record
Dr. Joseph Chun, M.D.
Allergy & Immunology Physician (CMS: Internal Medicine) · Internal Medicine Physician · Pediatrics Physician · Fullerton, CA
- NPI 1710015425
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1501 W Commonwealth Ave
Fullerton, CA 928332727
(714) 410-3100 - Additional location
-
6261 Stanton Ave
Buena Park, CA 906212436
(714) 739-4325 - Mailing address
-
Po Box 35380
Las Vegas, NV 891335380
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- February 4, 2026
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207K00000X — NUCC code
- State license (1)
- California #G61950
- Medicaid
- CA #GR00088840
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710015425. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,245
Distinct HCPCS
10
Medicare allowed
$111,659
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 320 | 179 | $138 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 176 | 111 | $98 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 153 | 86 | $43 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 100 | 100 | $140 | |
J0897 |
Injection, denosumab, 1 mg | 79 | 16 | $18 | |
99497 |
Advance care planning, first 30 minutes | 67 | 67 | $88 | |
G0008 |
Administration of influenza virus vaccine | 62 | 62 | $33 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 56 | 43 | $61 | |
81002 |
Urinalysis, manual test | 30 | 19 | $3 | |
90756 |
Influenza vaccine, quadrivalent derived from cell cultures | 29 | 29 | $32 |
In context: peer comparison
Among 1 peers in Fullerton Allergy & Immunology Physician, average services per provider: 69. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$38
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 2 | $37.53 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
7,269
Patients
2,040
Total drug cost
$1,058,413
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 1,173 | 338 | $19,281 |
| Losartan Potassium | Generic | 1,004 | 281 | $18,783 |
| Amlodipine Besylate | Generic | 973 | 253 | $12,675 |
| Metformin Hcl | Generic | 617 | 166 | $9,333 |
| Rosuvastatin Calcium | Generic | 526 | 185 | $17,829 |
| Simvastatin | Generic | 428 | 122 | $6,404 |
| Levothyroxine Sodium | Generic | 410 | 108 | $8,531 |
| Creon (Lipase/Protease/Amylase) | Brand | 401 | 83 | $806,870 |
| Tamsulosin Hcl | Generic | 313 | 83 | $8,672 |
| Metoprolol Succinate | Generic | 289 | 73 | $6,434 |
Frequently asked questions
What is Dr. Joseph Chun's medical specialty?
Dr. Joseph Chun practices Allergy & Immunology Physician in Fullerton, CA.
Where does Dr. Joseph Chun practice?
Dr. Joseph Chun practices at 1501 W Commonwealth Ave, Fullerton, CA 928332727. Office phone: 7144103100.
What is Dr. Joseph Chun's NPI?
Dr. Joseph Chun's National Provider Identifier (NPI) is 1710015425, issued by NPPES.
Does Dr. Joseph Chun accept Medicare assignment?
Yes. Dr. Joseph Chun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joseph Chun 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); Telephone medical discussion with physician (HCPCS 99441). Source: CMS Medicare Physician & Other Practitioners file.