Dr. Daniel S. Chen, MD
Neurology (Neurology Physician)
- Medicare participating
At a glance
- Years since graduation
- 30
- In the NPI registry since
- 2008
- Medicare patients seen, 2024
- 514
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2008Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Neurology Physician primary
OR license MD169231 · PA license MD447898
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Salem Hospital Salem, OR
- Samaritan Albany General Hospital Albany, OR
- Samaritan PAcific Community Hospital Newport, OR
- Samaritan Lebanon Community Hospital Lebanon, OR
- Salem Health West Valley Dallas, OR
Medical groups
- Salem Health (454 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 514
- Services billed
- 1,368
- Patients’ average age
- 71
| Service | Times | Patients |
|---|---|---|
| Needle measurement of electrical activity in arm or leg muscles, complete study | 227 | 132 |
| Established patient office or other outpatient visit, 30-39 minutes | 203 | 156 |
| New patient office or other outpatient visit, 45-59 minutes | 96 | 96 |
| Nerve conduction, 7-8 studies | 74 | 74 |
| Injection of chemical for paralysis of facial and neck nerve muscles on both sides of face | 63 | 28 |
| Nerve conduction, 3-4 studies | 48 | 48 |
| Measurement of brain wave activity (eeg), awake and asleep | 48 | 47 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 30 | 11 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 28 | 28 |
| Established patient office or other outpatient visit, 40-54 minutes | 25 | 23 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Carbidopa-Levodopa (carbidopa/levodopa) Other prescribers in Salem, OR | 1,075 |
| Primidone Other prescribers in Salem, OR | 516 |
| Clonazepam Other prescribers in Salem, OR | 276 |
| Levetiracetam Other prescribers in Salem, OR | 218 |
| Carbidopa-Levodopa Er (carbidopa/levodopa) Other prescribers in Salem, OR | 169 |
| Gabapentin Other prescribers in Salem, OR | 158 |
| Selegiline Hcl | 135 |
| Propranolol Hcl Other prescribers in Salem, OR | 133 |
| Rasagiline Mesylate | 123 |
| Quetiapine Fumarate Other prescribers in Salem, OR | 120 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 2 payments worth $48.72 in total to this clinician.
| DePuy Synthes Sales Inc. | $48.72 |
|---|
| Food and Beverage | $48.72 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.