Doctor profile · Federal record
Dr. Ha Nguyen, MD
Neurological Surgery Physician (CMS: Neurosurgery) · Thousand Oaks, CA
- NPI 1518256429
- Accepts Medicare
- MIPS 7.0 / 100 · 2023
- 15 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
227 W Janss RD, Ste 125
Thousand Oaks, CA 913601856
(805) 372-1679
Credentials & registration
- NPI registered
- March 2011 — 15 yrs on file
- Profile last updated
- March 2, 2020
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 207T00000X — NUCC code
- State license (1)
- California #A15373
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518256429. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,083
Distinct HCPCS
6
Medicare allowed
$187,593
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 708 | 186 | $123 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 247 | 239 | $180 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 80 | 54 | $137 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 23 | 23 | $234 | |
62223 |
Creation of brain fluid drainage shunt, ventriculo-peritoneal, -pleural, other terminus | 13 | 13 | $1,080 | |
61312 |
Removal of skull bone for aspiration of blood accumulation in upper brain outside or below brain membrane | 12 | 12 | $2,111 |
In context: peer comparison
Among 1 peers in Thousand Oaks Neurological Surgery Physician, average services per provider: 180. This provider delivers 6.0× the peer median.Open Payments
Industry payments received
All-time total
$215
Transactions
6
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Spineart USA INC | 1 | $99.58 | |
| Ucb, INC. | 1 | $45.39 | |
| Merck Sharp & Dohme LLC | 2 | $36.81 | |
| DePuy Synthes Sales INC. | 2 | $33.21 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Ha Nguyen's medical specialty?
Dr. Ha Nguyen practices Neurological Surgery Physician in Thousand Oaks, CA.
Where does Dr. Ha Nguyen practice?
Dr. Ha Nguyen practices at 227 W Janss RD, Thousand Oaks, CA 913601856. Office phone: 8053721679.
What is Dr. Ha Nguyen's NPI?
Dr. Ha Nguyen's National Provider Identifier (NPI) is 1518256429, issued by NPPES.
Does Dr. Ha Nguyen accept Medicare assignment?
Yes. Dr. Ha Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ha Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.