Physician Profile
Unclaimed ProfileAbout CHEN
John W Chen, M.D. is a healthcare provider in Orange, CA specialising in neurology. John trained at University of Michigan Medical School, graduating in 1993.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Chen?
Dr. Chen is a neurology in Orange, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NEUROLOGY”.
NPI registry
What is Dr. Chen's address?
Dr. Chen is listed at 2617 E CHAPMAN AVE STE 101, Orange, CA 92869. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chen?
The number on file is (714) 202-0218. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chen's NPI number?
Dr. Chen's National Provider Identifier is 1841210846. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Chen train?
Dr. Chen attended University of Michigan Medical School, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chen been practising?
Dr. Chen has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chen perform?
According to Medicare billing data, Dr. Chen provides treatments such as measurement of brain wave activity , awake and asleep and measurement of brain wave activity , awake and drowsy, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chen. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (714) 202-0218
- Email not available
Practice Locations
2617 E CHAPMAN AVE STE 101
Orange, CA 92869
Procedures Most Often Billed to Medicare
672 services · 357 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Measurement of brain wave activity (eeg), awake and asleep | Treatment | 95819 |
55 |
| Measurement of brain wave activity (eeg), awake and drowsy | Treatment | 95816 |
13 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
236 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
205 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
96 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
47 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
20 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other neurology specialists in Orange 8
Same specialty, same city.
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1993 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Measurement of brain wave activity (eeg), awake and asleep 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.