Doctor profile · Federal record
Dr. Caroline Nguyen, M.D.
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Los Angeles, CA
- NPI 1528388337
- Accepts Medicare
- 16 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1520 San Pablo Street, Suite 1000
Los Angeles, CA 90033
(323) 442-5100 - Mailing address
-
1333 San Pablo Street Bmt-B11
Los Angeles, CA 90033
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- October 12, 2016
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- California #A120689
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528388337. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
405
Distinct HCPCS
8
Medicare allowed
$43,827
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 116 | 36 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 106 | 88 | $103 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 64 | 53 | $149 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 37 | 28 | $104 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 30 | 29 | $138 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 19 | 12 | $70 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 18 | 15 | $153 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 15 | 14 | $103 |
In context: peer comparison
Among 31 peers in Los Angeles Endocrinology, Diabetes & Metabolism Physician, average services per provider: 219. This provider delivers 1.8× the peer median.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbott Laboratories | 1 | $21.69 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
839
Patients
172
Total drug cost
$270,993
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 200 | 54 | $4,155 |
| Metformin Hcl | Generic | 87 | 26 | $1,428 |
| Ozempic (Semaglutide) | Brand | 83 | 13 | $91,500 |
| Novolog Flexpen (Insulin Aspart) | Brand | 73 | 18 | $49,856 |
| Synthroid (Levothyroxine Sodium) | Brand | 67 | 22 | $7,773 |
| Jardiance (Empagliflozin) | Brand | 65 | 14 | $68,799 |
| Nano 2Nd Gen Pen Needle (Pen Needle, Diabetic) | Brand | 48 | 13 | $4,179 |
| Atorvastatin Calcium | Generic | 32 | 0 | $211 |
| Hydrocortisone | Generic | 32 | 0 | $1,977 |
| Lantus Solostar (Insulin Glargine,Hum.Rec.Anlog) | Brand | 30 | 12 | $18,639 |
Frequently asked questions
What is Dr. Caroline Nguyen's medical specialty?
Dr. Caroline Nguyen practices Endocrinology, Diabetes & Metabolism Physician in Los Angeles, CA.
Where does Dr. Caroline Nguyen practice?
Dr. Caroline Nguyen practices at 1520 San Pablo Street, Los Angeles, CA 90033. Office phone: 3234425100.
What is Dr. Caroline Nguyen's NPI?
Dr. Caroline Nguyen's National Provider Identifier (NPI) is 1528388337, issued by NPPES.
Does Dr. Caroline Nguyen accept Medicare assignment?
Yes. Dr. Caroline Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Caroline Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.