Doctor profile · Federal record
Dr. Winston Chung, MD
Internal Medicine Physician (CMS: Internal Medicine) · Los Alamitos, CA
- NPI 1851322085
- Accepts Medicare
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3801 Katella Ave, Suite 330
Los Alamitos, CA 907203338
(562) 594-9546
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- September 7, 2007
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #G79052
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851322085. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,126
Distinct HCPCS
10
Medicare allowed
$309,433
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 647 | 150 | $127 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 532 | 252 | $100 | |
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 283 | 53 | $81 | |
99457 |
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 259 | 52 | $54 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 217 | 50 | $59 | |
99458 |
Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | 178 | 43 | $44 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 148 | 136 | $186 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 122 | 122 | $143 | |
99291 |
Critical care, first 30-74 minutes | 106 | 31 | $225 | |
99238 |
Hospital discharge day management, 30 minutes or less | 103 | 93 | $87 |
In context: peer comparison
Among 14 peers in Los Alamitos Internal Medicine Physician, average services per provider: 139. This provider delivers 22× the peer median.Open Payments
Industry payments received
All-time total
$99
Transactions
5
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 2 | $31.69 | |
| Bayer Healthcare Pharmaceuticals INC. | 1 | $30.09 | |
| Amgen INC. | 1 | $20.59 | |
| Electromed, INC. | 1 | $16.92 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
4,280
Patients
1,001
Total drug cost
$238,042
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 700 | 172 | $10,699 |
| Amlodipine Besylate | Generic | 539 | 133 | $5,902 |
| Levothyroxine Sodium | Generic | 452 | 82 | $7,397 |
| Eliquis (Apixaban) | Brand | 334 | 44 | $177,447 |
| Losartan Potassium | Generic | 332 | 87 | $6,201 |
| Metoprolol Succinate | Generic | 269 | 60 | $5,253 |
| Pantoprazole Sodium | Generic | 262 | 61 | $5,669 |
| Lisinopril | Generic | 250 | 59 | $2,409 |
| Gabapentin | Generic | 221 | 47 | $4,760 |
| Tamsulosin Hcl | Generic | 199 | 59 | $3,259 |
Frequently asked questions
What is Dr. Winston Chung's medical specialty?
Dr. Winston Chung practices Internal Medicine Physician in Los Alamitos, CA.
Where does Dr. Winston Chung practice?
Dr. Winston Chung practices at 3801 Katella Ave, Los Alamitos, CA 907203338. Office phone: 5625949546.
What is Dr. Winston Chung's NPI?
Dr. Winston Chung's National Provider Identifier (NPI) is 1851322085, issued by NPPES.
Does Dr. Winston Chung accept Medicare assignment?
Yes. Dr. Winston Chung accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Winston Chung commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99213); Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308). Source: CMS Medicare Physician & Other Practitioners file.