Internal Medicine, Gastroenterology · Sioux Falls, SD
NPI
1235183807
Since 2006
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
1905 W 57th St Ste 1
Sioux Falls, SD, 57108
Phone (605) 310-2000
Groups this clinician bills Medicare through
Medicare paid, 2024
$375K
17,071 services
Medicare patients, 2024
118
Average age 72
Drug cost, 2024
$1.4M
984 prescriptions
Company payments, 2025
$1,816
From 20 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Chandar Singaram was code J1745 (injection, infliximab, excludes biosimilar, 10 mg), 4,420 times for 18 patients. In total Chandar Singaram billed 17,071 services in 24 codes, and Medicare paid $375K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2023-03-15.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J1745 Injection, infliximab, excludes biosimilar, 10 mg | Office | 4,420 | 18 | $24.86 | $110K |
| 99214 Office E&M - Established | Office | 262 | 91 | $96.57 | $25K |
| 96413 Chemotherapy Administration | Office | 118 | 19 | $97.03 | $11K |
| 99213 Office E&M - Established | Office | 69 | 49 | $59.39 | $4,098 |
| 43239 Upper GI Endoscopy | Facility | 38 | 36 | $81.02 | $3,079 |
| 99204 Office E&M - New | Office | 32 | 32 | $118.94 | $3,806 |
| 96415 Chemotherapy Administration | Office | 32 | 14 | $20.57 | $658 |
| 45380 Lower GI Endoscopy - Other | Facility | 13 | 13 | $127.20 | $1,654 |
By year: 2022 $255K for 11,202 services; 2023 $303K for 14,837 services; 2024 $375K for 17,071 services.
Medicare prescription drug claims, 2024
In 2024, the drug Chandar Singaram prescribed most often to Medicare patients was Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine), with 79 prescriptions and refills. In total Chandar Singaram wrote 984 Medicare prescriptions that cost $1.4M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Diphenoxylate-Atropine Diphenoxylate Hcl/Atropine | 79 | 83 | 20 | $1,168 |
| Prednisone Generic | 76 | 102 | 29 | $401 |
| Omeprazole Generic | 49 | 111 | 16 | $613 |
| Xifaxan Rifaximin | 47 | 55 | Under 11 | $171K |
| Linzess Linaclotide | 45 | 85 | 12 | $45K |
| Viberzi Eluxadoline | 33 | 33 | Under 11 | $36K |
| Sucraid Sacrosidase | 32 | 32 | Under 11 | $449K |
| Trulance Plecanatide | 27 | 29 | Under 11 | $15K |
| Esomeprazole Magnesium Generic | 26 | 26 | Under 11 | $2,368 |
| Creon Lipase/Protease/Amylase | 24 | 26 | Under 11 | $81K |
| Pertzye Lipase/Protease/Amylase | 23 | 31 | Under 11 | $86K |
| Famotidine Generic | 22 | 34 | Under 11 | $210 |
| Mesalamine Er Mesalamine | 22 | 47 | Under 11 | $7,750 |
| Zenpep Lipase/Protease/Amylase | 20 | 31 | Under 11 | $157K |
| Pantoprazole Sodium Generic | 20 | 36 | Under 11 | $136 |
Brand drugs: - claims; generic drugs: 644 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Chandar Singaram $1,816 ($1,816 in general payments such as food, travel and fees) from 20 companies. The largest payer was Takeda Pharmaceuticals U.S.A., Inc. with $235.
| Company | Payments | Amount |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. TAK | 4 | $235 |
| Madrigal Pharmaceuticals MDGL | 2 | $231 |
| Abbvie Inc. ABBV | 8 | $226 |
| Ardelyx, Inc. ARDX | 2 | $219 |
| Novo Nordisk Inc NVO | 2 | $154 |
| Celltrion USA Inc. 068270.KS | 6 | $135 |
| Regeneron Healthcare Solutions, Inc. REGN | 1 | $123 |
| Janssen Biotech, Inc. JNJ | 3 | $120 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC BHC | 4 | $75.62 |
| Phathom Pharmaceuticals, Inc. PHAT | 3 | $52.63 |
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.