Internal Medicine, Gastroenterology · Downers Grove, IL
NPI
1356327910
Since 2005
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
2
Medicare group memberships
Hospitals
3
Hospital affiliations
3825 Highland Ave, Tower 2 - Suite 302
Downers Grove, IL, 60515
Phone (630) 434-9312
Groups this clinician bills Medicare through
Medicare paid, 2024
$118K
1,294 services
Medicare patients, 2024
461
Average age 74
Drug cost, 2024
$859K
1,490 prescriptions
Company payments, 2025
$159K
From 32 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Rockford G Yapp was code 99213 (office e&m - established), 323 times for 230 patients. In total Rockford G Yapp billed 1,294 services in 59 codes, and Medicare paid $118K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2007-07-08.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99213 Office E&M - Established | Office | 323 | 230 | $69.40 | $22K |
| 43239 Upper GI Endoscopy | Facility | 141 | 132 | $65.64 | $9,255 |
| 99214 Office E&M - Established | Office | 138 | 98 | $99.31 | $14K |
| 99232 Hospital E&M - Subsequent | Facility | 126 | 61 | $63.24 | $7,969 |
| 99203 Office E&M - New | Office | 72 | 72 | $76.17 | $5,484 |
| 99222 Hospital E&M - Initial | Facility | 62 | 57 | $96.82 | $6,003 |
| 45385 Colonoscopy - Lesion Removal | Facility | 50 | 47 | $215.03 | $11K |
| 45380 Lower GI Endoscopy - Other | Facility | 49 | 48 | $138.21 | $6,772 |
| 76981 Ultrasound - Nonspecific | Office | 46 | 44 | $83.69 | $3,850 |
| G0105 Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 31 | 31 | $180.71 | $5,602 |
| 99204 Office E&M - New | Office | 26 | 26 | $130.47 | $3,392 |
| 99233 Hospital E&M - Subsequent | Facility | 26 | 14 | $96.09 | $2,498 |
| G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Facility | 17 | 17 | $175.51 | $2,984 |
| 43248 Upper GI Endoscopy | Facility | 13 | 13 | $110.13 | $1,432 |
| 99202 Office E&M - New | Office | 13 | 13 | $35.34 | $459 |
By year: 2022 $143K for 1,675 services; 2023 $142K for 1,533 services; 2024 $118K for 1,294 services.
Medicare prescription drug claims, 2024
In 2024, the drug Rockford G Yapp prescribed most often to Medicare patients was Omeprazole, with 522 prescriptions and refills. In total Rockford G Yapp wrote 1,490 Medicare prescriptions that cost $859K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Omeprazole Generic | 522 | 1,445 | 194 | $9,616 |
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 135 | 135 | 131 | $8,550 |
| Pantoprazole Sodium Generic | 84 | 204 | 29 | $1,575 |
| Esomeprazole Magnesium Generic | 78 | 193 | 34 | $3,578 |
| Linzess Linaclotide | 58 | 144 | 18 | $78K |
| Mesalamine Generic | 50 | 113 | 12 | $40K |
| Lansoprazole Generic | 45 | 93 | 15 | $1,819 |
| Cholestyramine Cholestyramine (With Sugar) | 39 | 89 | 22 | $3,875 |
| Voquezna Vonoprazan Fumarate | 36 | 53 | Under 11 | $34K |
| Rezdiffra Resmetirom | 34 | 50 | 11 | $196K |
| Ozempic Semaglutide | 33 | 45 | Under 11 | $32K |
| Zenpep Lipase/Protease/Amylase | 26 | 36 | Under 11 | $64K |
| Spironolactone Generic | 21 | 57 | Under 11 | $369 |
| Xifaxan Rifaximin | 16 | 16 | Under 11 | $45K |
| Furosemide Generic | 14 | 39 | Under 11 | $87.48 |
Brand drugs: - claims; generic drugs: 1,128 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Rockford G Yapp $159K ($159K in general payments such as food, travel and fees) from 32 companies. The largest payer was Novo Nordisk Inc with $58K.
| Company | Payments | Amount |
|---|---|---|
| Novo Nordisk Inc NVO | 29 | $58K |
| Phathom Pharmaceuticals, Inc. PHAT | 31 | $30K |
| Madrigal Pharmaceuticals MDGL | 37 | $28K |
| Lumendi LLC | 1 | $25K |
| Ipsen Biopharmaceuticals, Inc IPN.PA | 17 | $9,289 |
| Gilead Sciences, Inc. GILD | 10 | $2,955 |
| Bausch Health US, LLC BHC | 1 | $1,950 |
| Abbvie Inc. ABBV | 39 | $1,034 |
| Olympus Medical Systems Corporation | 1 | $875 |
| Takeda Pharmaceuticals U.S.A., Inc. TAK | 17 | $397 |
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.