Doctor profile · Federal record
Dr. Chandar Singaram, MD
Gastroenterology Physician (CMS: Gastroenterology) · Sioux Falls, SD
- NPI 1235183807
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1905 W 57Th St Ste 1
Sioux Falls, SD 571082893
(605) 310-2000
fax (605) 274-1919
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- March 15, 2023
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- South Dakota #4948
- Medicaid (4)
- IA #3985275 · MN #749493900 · NE #10025352300 · SD #6004273
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235183807. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,834
Distinct HCPCS
8
Medicare allowed
$187,859
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1745 |
Injection, infliximab, excludes biosimilar, 10 mg | 4,300 | 19 | $33 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 172 | 77 | $87 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 165 | 82 | $55 | |
96413 |
Administration of chemotherapy into vein, 1 hour or less | 114 | 20 | $129 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 28 | 26 | $106 | |
96415 |
Administration of chemotherapy into vein, each additional hour | 27 | 13 | $28 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 12 | $123 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 12 | 12 | $108 |
In context: peer comparison
Among 11 peers in this city , average services per provider: 86. This provider delivers 56× the peer median.Open Payments
Industry payments received
All-time total
$5,276
Transactions
82
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GENZYME CORPORATION | 2 | $1,767.27 | |
| Celgene Corporation | 9 | $833.39 | |
| ABBVIE INC. | 14 | $532.05 | |
| Phathom Pharmaceuticals, Inc. | 15 | $524.26 | |
| AIMMUNE THERAPEUTICS, INC. | 5 | $385.91 | |
| Ardelyx, Inc. | 8 | $339.35 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 8 | $333.96 | |
| Gilead Sciences, Inc. | 2 | $149.48 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 8 | $139.16 | |
| QOL Medical, LLC | 4 | $104.17 | |
| Lilly USA, LLC | 3 | $65.21 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $33.58 | |
| Ipsen Biopharmaceuticals, Inc | 1 | $32.96 | |
| PFIZER INC. | 1 | $20.06 | |
| SANOFI-AVENTIS U.S. LLC | 1 | $15.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
560
Patients
75
Total drug cost
$1,257,370
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 83 | 24 | $809 |
| Sucraid (Sacrosidase) | Brand | 74 | 14 | $996,732 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 73 | 19 | $1,792 |
| Omeprazole | Generic | 58 | 18 | $833 |
| Linzess (Linaclotide) | Brand | 33 | 0 | $41,189 |
| Trulance (Plecanatide) | Brand | 31 | 0 | $18,613 |
| Azathioprine | Generic | 30 | 0 | $1,685 |
| Nortriptyline Hcl | Generic | 29 | 0 | $128 |
| Viberzi (Eluxadoline) | Brand | 28 | 0 | $33,926 |
| Xifaxan (Rifaximin) | Brand | 25 | 0 | $79,534 |
Hospital affiliations
Frequently asked questions
What is Dr. Chandar Singaram's medical specialty?
Dr. Chandar Singaram practices Gastroenterology Physician in Sioux Falls, SD.
Where does Dr. Chandar Singaram practice?
Dr. Chandar Singaram practices at 1905 W 57Th St Ste 1, Sioux Falls, SD 571082893. Office phone: 6053102000.
What is Dr. Chandar Singaram's NPI?
Dr. Chandar Singaram's National Provider Identifier (NPI) is 1235183807, issued by NPPES.
Does Dr. Chandar Singaram accept Medicare assignment?
Yes. Dr. Chandar Singaram accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chandar Singaram commonly perform?
Top Medicare-reported procedures in 2023: Injection, infliximab, excludes biosimilar, 10 mg (HCPCS J1745); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99212). Source: CMS Medicare Physician & Other Practitioners file.