Doctor profile · Federal record
Dr. Jefferson Chen, MD PHD
Neurological Surgery Physician (CMS: Neurosurgery) · Neurological Surgery Physician · Neurological Surgery Physician · Neurological Surgery Physician · Orange, CA
- NPI 1992789747
- Accepts Medicare
- 39 yrs in practice
- Licensed in 4 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
101 the City Dr S
Orange, CA 928683201
(714) 880-7812 - Additional location
-
501 N Graham St, Pacific Neursurgical PC #580
Portland, OR 972271654
(503) 788-6721
fax (503) 788-6721 - Mailing address
-
200 S Manchester Ave Ste 300
Orange, CA 928683219
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- November 3, 2022
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207T00000X — NUCC code
- State licenses (4)
- California #A45489 · Oregon #MD21924 · Texas #J6902 · Arizona #21671
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992789747. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
421
Distinct HCPCS
10
Medicare allowed
$52,116
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 134 | 80 | $104 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 66 | 49 | $70 | |
62252 |
Reprogramming of cerebrospinal fluid shunt | 48 | 31 | $46 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 40 | 31 | $151 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 32 | 22 | $83 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 25 | 25 | $187 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 24 | 24 | $137 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 21 | 19 | $88 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 16 | 16 | $143 | |
62223 |
Creation of brain fluid drainage shunt, ventriculo-peritoneal, -pleural, other terminus | 15 | 15 | $702 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 36. This provider delivers 12× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Jefferson Chen's medical specialty?
Dr. Jefferson Chen practices Neurological Surgery Physician in Orange, CA.
Where does Dr. Jefferson Chen practice?
Dr. Jefferson Chen practices at 101 the City Dr S, Orange, CA 928683201. Office phone: 7148807812.
What is Dr. Jefferson Chen's NPI?
Dr. Jefferson Chen's National Provider Identifier (NPI) is 1992789747, issued by NPPES.
Does Dr. Jefferson Chen accept Medicare assignment?
Yes. Dr. Jefferson Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jefferson Chen 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); Reprogramming of cerebrospinal fluid shunt (HCPCS 62252). Source: CMS Medicare Physician & Other Practitioners file.