Psychiatry and Neurology, Neurology · Los Angeles, CA
NPI
1194761841
Since 2006
Specialty
Psychiatry and Neurology, Neurology
Code 2084N0400X
Group practices
0
Medicare group memberships
Hospitals
0
Hospital affiliations
201 S Alvarado St, #200
Los Angeles, CA, 90057
Phone (213) 484-6000
Medicare paid, 2024
$221K
3,696 services
Medicare patients, 2024
594
Average age 77
Drug cost, 2024
$1.2M
9,336 prescriptions
Company payments, 2025
$3,074
From 7 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Daniel W Chang was code 99214 (office e&m - established), 657 times for 395 patients. In total Daniel W Chang billed 3,696 services in 11 codes, and Medicare paid $221K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2010-02-04.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 657 | 395 | $116.18 | $76K |
| 99204 Office E&M - New | Office | 215 | 215 | $149.75 | $32K |
| 95816 Neurologic | Office | 144 | 143 | $379.27 | $55K |
| 95957 Neurologic | Office | 144 | 143 | $285.71 | $41K |
By year: 2022 $222K for 3,463 services; 2023 $181K for 2,848 services; 2024 $221K for 3,696 services.
Medicare prescription drug claims, 2024
In 2024, the drug Daniel W Chang prescribed most often to Medicare patients was Memantine Hcl Er (Memantine Hcl), with 2,416 prescriptions and refills. In total Daniel W Chang wrote 9,336 Medicare prescriptions that cost $1.2M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Memantine Hcl Er Memantine Hcl | 2,416 | 3,493 | 450 | $325K |
| Donepezil Hcl Generic | 1,211 | 2,006 | 248 | $6,044 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 636 | 1,139 | 130 | $12K |
| Memantine Hcl Generic | 577 | 966 | 142 | $11K |
| Gabapentin Generic | 536 | 774 | 154 | $7,056 |
| Sertraline Hcl Generic | 413 | 536 | 79 | $1,014 |
| Divalproex Sodium Er Divalproex Sodium | 295 | 485 | 72 | $6,633 |
| Levetiracetam Generic | 277 | 600 | 72 | $11K |
| Pramipexole Dihydrochloride Pramipexole Di-Hcl | 246 | 402 | 53 | $4,231 |
| Rasagiline Mesylate Generic | 139 | 215 | 23 | $29K |
| Primidone Generic | 137 | 248 | 24 | $1,742 |
| Quetiapine Fumarate Generic | 135 | 174 | 26 | $1,702 |
| Nortriptyline Hcl Generic | 130 | 200 | 32 | $1,953 |
| Entacapone Generic | 114 | 142 | 13 | $15K |
| Duloxetine Hcl Generic | 114 | 182 | 32 | $2,059 |
Brand drugs: 421 claims; generic drugs: 8,898 claims; opioid claims: 16.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Daniel W Chang $3,074 ($3,074 in general payments such as food, travel and fees) from 7 companies. The largest payer was Penumbra, Inc. with $1,490.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.