Psychiatry · Glendora, CA
NPI
1538238118
Since 2006
Specialty
Psychiatry
Code 2084P0800X
Group practices
2
Medicare group memberships
Hospitals
4
Hospital affiliations
510 S Grand Ave Ste 200
Glendora, CA, 91741
Phone (626) 914-1980
Groups this clinician bills Medicare through
Medicare paid, 2024
$374K
5,514 services
Medicare patients, 2024
1,248
Average age 70
Drug cost, 2024
$1.8M
19,241 prescriptions
Company payments, 2025
$2,640
From 17 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by William M Gillespie was code 99232 (hospital e&m - subsequent), 2,155 times for 670 patients. In total William M Gillespie billed 5,514 services in 17 codes, and Medicare paid $374K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2013-02-28.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99232 Hospital E&M - Subsequent | Facility | 2,155 | 670 | $58.60 | $126K |
| 99233 Hospital E&M - Subsequent | Facility | 996 | 485 | $88.16 | $88K |
| 99308 SNF E&M | Facility | 612 | 145 | $54.65 | $33K |
| 99214 Office E&M - Established | Office | 599 | 127 | $66.85 | $40K |
| 99222 Hospital E&M - Initial | Facility | 570 | 488 | $94.96 | $54K |
| 99238 Hospital Discharge Management | Facility | 321 | 269 | $58.63 | $19K |
| 99347 Home E&M - New and Established | Office | 58 | 54 | $30.88 | $1,791 |
| 90833 Psychotherapy - Nongroup | Office | 40 | 11 | $46.73 | $1,869 |
| 99306 SNF E&M | Facility | 38 | 37 | $136.74 | $5,196 |
| 90792 Psychotherapy - Nongroup | Office | 15 | 15 | $119.79 | $1,797 |
| 99342 Home E&M - New and Established | Office | 11 | 11 | $47.96 | $528 |
By year: 2022 $423K for 5,773 services; 2023 $405K for 5,394 services; 2024 $374K for 5,514 services.
Medicare prescription drug claims, 2024
In 2024, the drug William M Gillespie prescribed most often to Medicare patients was Risperidone, with 1,606 prescriptions and refills. In total William M Gillespie wrote 19,241 Medicare prescriptions that cost $1.8M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Risperidone Generic | 1,606 | 1,657 | 153 | $23K |
| Olanzapine Generic | 1,353 | 1,404 | 148 | $27K |
| Divalproex Sodium Generic | 1,330 | 1,353 | 168 | $46K |
| Escitalopram Oxalate Generic | 1,245 | 1,341 | 123 | $7,171 |
| Trazodone Hcl Generic | 1,243 | 1,392 | 126 | $6,788 |
| Quetiapine Fumarate Generic | 1,225 | 1,303 | 138 | $29K |
| Benztropine Mesylate Generic | 669 | 699 | 71 | $5,401 |
| Mirtazapine Generic | 622 | 646 | 84 | $12K |
| Clonazepam Generic | 599 | 605 | 72 | $4,762 |
| Aripiprazole Generic | 556 | 598 | 60 | $15K |
| Lorazepam Generic | 551 | 551 | 147 | $4,015 |
| Buspirone Hcl Generic | 542 | 653 | 62 | $4,956 |
| Sertraline Hcl Generic | 534 | 602 | 69 | $2,684 |
| Bupropion Xl Bupropion Hcl | 503 | 627 | 53 | $5,337 |
| Fluoxetine Hcl Generic | 385 | 419 | 37 | $3,362 |
Brand drugs: 717 claims; generic drugs: 18,524 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid William M Gillespie $2,640 ($2,640 in general payments such as food, travel and fees) from 17 companies. The largest payer was Vanda Pharmaceuticals Inc. with $437.
| Company | Payments | Amount |
|---|---|---|
| Vanda Pharmaceuticals Inc. VNDA | 20 | $437 |
| Teva Pharmaceuticals USA, Inc. TEVA | 23 | $429 |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) JNJ | 21 | $309 |
| Janssen Pharmaceuticals, Inc JNJ | 15 | $247 |
| Otsuka America Pharmaceutical, Inc. 4578.T | 19 | $244 |
| Neurocrine BioSciences, Inc. NBIX | 18 | $229 |
| E.R. Squibb & Sons, L.L.C. BMY | 13 | $192 |
| Alkermes, Inc. ALKS | 17 | $166 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. 4578.T | 1 | $144 |
| Bausch Health US, LLC BHC | 3 | $56.53 |
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.