Doctor profile · Federal record
Dr. Elizabeth Nghiem, M.D.
Infectious Disease Physician (CMS: Infectious Disease) · Fountain Valley, CA
- NPI 1083626212
- Accepts Medicare
- 31 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
11160 Warner Ave, Suite 323
Fountain Valley, CA 927084008
(714) 751-7002
fax (714) 751-9340
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- California #A62911
- Medicaid
- CA #00A629110
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083626212. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,413
Distinct HCPCS
7
Medicare allowed
$517,199
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 4,582 | 496 | $83 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 356 | 307 | $182 | |
99291 |
Critical care, first 30-74 minutes | 256 | 86 | $222 | |
99211 |
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | 78 | 48 | $26 | |
87426 |
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | 77 | 46 | $35 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 36 | 19 | $132 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 28 | 28 | $171 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 657. This provider delivers 8.2× the peer median.Open Payments
Industry payments received
All-time total
$266
Transactions
4
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, Inc. | 2 | $238.63 | |
| Shionogi Inc | 2 | $27.72 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
18
Patients
0
Total drug cost
$354
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levofloxacin | Generic | 18 | 0 | $354 |
Hospital affiliations
Frequently asked questions
What is Dr. Elizabeth Nghiem's medical specialty?
Dr. Elizabeth Nghiem practices Infectious Disease Physician in Fountain Valley, CA.
Where does Dr. Elizabeth Nghiem practice?
Dr. Elizabeth Nghiem practices at 11160 Warner Ave, Fountain Valley, CA 927084008. Office phone: 7147517002.
What is Dr. Elizabeth Nghiem's NPI?
Dr. Elizabeth Nghiem's National Provider Identifier (NPI) is 1083626212, issued by NPPES.
Does Dr. Elizabeth Nghiem accept Medicare assignment?
Yes. Dr. Elizabeth Nghiem accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Elizabeth Nghiem commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.