Internal Medicine, Infectious Disease · Newark, DE
NPI
1639339484
Since 2008
Specialty
Internal Medicine, Infectious Disease
Code 207RI0200X
Group practices
1
Medicare group memberships
Hospitals
3
Hospital affiliations
537 Stanton Christiana Rd, Suite 201
Newark, DE, 19713
Phone (302) 994-9692
Groups this clinician bills Medicare through
Medicare paid, 2024
$226K
9,832 services
Medicare patients, 2024
435
Average age 73
Drug cost, 2024
$780K
670 prescriptions
Company payments, 2025
$195
From 4 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Chad Duffalo was code 99232 (hospital e&m - subsequent), 466 times for 182 patients. In total Chad Duffalo billed 9,832 services in 23 codes, and Medicare paid $226K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2014-02-04.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99232 Hospital E&M - Subsequent | Facility | 466 | 182 | $60.49 | $28K |
| 99233 Hospital E&M - Subsequent | Facility | 442 | 170 | $90.74 | $40K |
| 99223 Hospital E&M - Initial | Facility | 245 | 230 | $132.12 | $32K |
| 99214 Office E&M - Established | Office | 156 | 87 | $94.69 | $15K |
| 99222 Hospital E&M - Initial | Facility | 69 | 67 | $101.06 | $6,973 |
| 99204 Office E&M - New | Office | 13 | 13 | $115.37 | $1,500 |
By year: 2022 $156K for 3,778 services; 2023 $206K for 7,081 services; 2024 $226K for 9,832 services.
Medicare prescription drug claims, 2024
In 2024, the drug Chad Duffalo prescribed most often to Medicare patients was Azithromycin, with 47 prescriptions and refills. In total Chad Duffalo wrote 670 Medicare prescriptions that cost $780K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Azithromycin Generic | 47 | 60 | 12 | $880 |
| Vancomycin Hcl Generic | 46 | 48 | 11 | $8,724 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 40 | 40 | Under 11 | $718 |
| Odefsey Emtricitab/Rilpiviri/Tenof Ala | 35 | 35 | Under 11 | $131K |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 34 | 34 | Under 11 | $254 |
| Genvoya Elviteg/Cob/Emtri/Tenof Alafen | 34 | 34 | Under 11 | $148K |
| Cephalexin Generic | 31 | 42 | Under 11 | $726 |
| Rifampin Generic | 26 | 26 | Under 11 | $634 |
| Tivicay Dolutegravir Sodium | 21 | 21 | Under 11 | $46K |
| Descovy Emtricitabine/Tenofov Alafenam | 21 | 21 | Under 11 | $45K |
| Ceftriaxone Ceftriaxone Sodium | 20 | 20 | Under 11 | $2,774 |
| Cefadroxil Generic | 20 | 20 | Under 11 | $470 |
| Ertapenem Ertapenem Sodium | 17 | 17 | Under 11 | $7,932 |
| Cefepime Hcl Generic | 17 | 17 | Under 11 | $2,381 |
| Piperacillin-Tazobactam Piperacillin Sodium/Tazobactam | 17 | 17 | Under 11 | $5,022 |
Brand drugs: 191 claims; generic drugs: 479 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Chad Duffalo $195 ($195 in general payments such as food, travel and fees) from 4 companies. The largest payer was Merck Sharp & Dohme LLC with $59.74.
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.