Psychiatry and Neurology, Neurology · Upland, CA
NPI
1326095977
Since 2006
Specialty
Psychiatry and Neurology, Neurology
Code 2084N0400X
Group practices
1
Medicare group memberships
Hospitals
0
Hospital affiliations
630 N 13th Ave, Suite B
Upland, CA, 91786
Phone (909) 982-2719
Groups this clinician bills Medicare through
Medicare paid
-
No Medicare services published
Medicare patients
-
Drug cost, 2024
$2.9M
3,167 prescriptions
Company payments, 2025
$11K
From 20 companies
Medicare prescription drug claims, 2024
In 2024, the drug William S Baek prescribed most often to Medicare patients was Donepezil Hcl, with 303 prescriptions and refills. In total William S Baek wrote 3,167 Medicare prescriptions that cost $2.9M.
| Drug |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2012-02-06.
| Claims |
|---|
| 30-day fills |
|---|
| Patients |
|---|
| Cost |
|---|
| Donepezil Hcl Generic | 303 | 799 | 121 | $3,184 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 209 | 523 | 61 | $8,956 |
| Levetiracetam Generic | 196 | 449 | 54 | $7,763 |
| Memantine Hcl Generic | 183 | 441 | 53 | $5,098 |
| Citalopram Hbr Citalopram Hydrobromide | 173 | 371 | 60 | $1,045 |
| Gabapentin Generic | 145 | 368 | 66 | $3,186 |
| Rizatriptan Rizatriptan Benzoate | 119 | 125 | 34 | $1,270 |
| Lamotrigine Generic | 113 | 298 | 35 | $3,109 |
| Primidone Generic | 111 | 303 | 37 | $2,757 |
| Ropinirole Hcl Generic | 99 | 223 | 25 | $5,397 |
| Topiramate Generic | 96 | 240 | 36 | $3,635 |
| Selegiline Hcl Generic | 87 | 187 | 22 | $12K |
| Clonazepam Generic | 77 | 77 | Under 11 | $164 |
| Quetiapine Fumarate Generic | 69 | 164 | 27 | $2,406 |
| Baclofen Generic | 53 | 99 | 22 | $757 |
Brand drugs: - claims; generic drugs: 2,763 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid William S Baek $11K ($11K in general payments such as food, travel and fees) from 20 companies. The largest payer was Abbvie Inc. with $7,087.
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.