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Edit this profileThomas C. Chen, M.D., PhD is a healthcare provider in Los Angeles, CA specializing in neurosurgery. Thomas trained at University of California, San Francisco School of Medicine, graduating in 1988. Thomas is also listed as specializing in neurological surgery. Medicare claims data shows Thomas provided 212 services to 133 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1225071509.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
1520 SAN PABLO ST STE 3800
Los Angeles, CA 90033
Within Neurological Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Brain & spine conditions
Brain conditions
Brain disorders
Brain injury
Brain tumors
Movement disorders
Nerve disorders
Pain
Pediatric conditions
Spine & back
Spine conditions
Spine deformity
Trauma & injury
Most searched procedures
Brain & spine surgery
Brain procedures
Brain surgery
Cranial reconstruction
Diagnostic & therapeutic
Endovascular procedures
Functional neurosurgery
Monitoring & trauma
Nerve procedures
Nerve surgery
Pain procedures
Pediatric neurosurgery
Radiation & radiosurgery
Radiation surgery
Skull base surgery
Spasticity treatment
Spine procedures
Spine surgery
Vascular neurosurgery
212 services · 133 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
170 | More than most peers in Neurosurgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
24 | Less often than most peers in Neurosurgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
18 | Less often than most peers in Neurosurgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Chen is a neurosurgery in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Chen is listed at 1520 San Pablo St Ste 3800, Los Angeles, CA 90033. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (323) 442-5720. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Chen's National Provider Identifier is 1225071509. 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
Dr. Chen attended University of California, San Francisco School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
Dr. Chen has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Chen the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
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
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