Doctor profile · Federal record
Dr. Chaudhary Khan, MD
Gastroenterology Physician (CMS: Gastroenterology) · Hepatology Physician · O Fallon, MO
- NPI 1649252461
- Accepts Medicare
- 27 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
20 Progress Point Pkwy Ste 206
O Fallon, MO 633682207
(636) 344-1073 - Additional location
-
20 Progress Point Pkwy, Ste 108
O Fallon, MO 633682206
fax (636) 344-1075
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- April 2, 2021
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Missouri #111121
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649252461. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
703
Distinct HCPCS
10
Medicare allowed
$81,547
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 150 | 149 | $88 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 107 | 105 | $244 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 103 | 98 | $77 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 87 | 51 | $77 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 58 | 55 | $127 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 48 | 46 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 33 | 33 | $86 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 29 | 28 | $120 | |
36415 |
Insertion of needle into vein for collection of blood sample | 24 | 24 | $8 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 21 | 21 | $162 |
In context: peer comparison
Among 3 peers in O Fallon Gastroenterology Physician, average services per provider: 43. This provider delivers 16× the peer median.Open Payments
Industry payments received
All-time total
$1,561
Transactions
61
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 21 | $428.90 | |
| Ipsen Biopharmaceuticals, INC | 1 | $149.97 | |
| Qol Medical, LLC | 3 | $148.54 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $121.01 | |
| Janssen Biotech, INC. | 6 | $118.10 | |
| Aimmune Therapeutics, INC. | 5 | $110.15 | |
| Ardelyx, INC. | 6 | $98.24 | |
| Takeda Pharmaceuticals U.S.A., INC. | 5 | $86.47 | |
| Genzyme Corporation | 4 | $84.95 | |
| Lilly USA, LLC | 3 | $62.91 | |
| Pfizer INC. | 2 | $30.50 | |
| Regeneron Healthcare Solutions, INC. | 1 | $26.53 | |
| Ironwood Pharmaceuticals, INC | 1 | $21.75 | |
| Gilead Sciences, INC. | 1 | $20.64 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 1 | $20.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,162
Patients
892
Total drug cost
$66,537
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Hcl | Generic | 333 | 318 | $504 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 246 | 236 | $3,519 |
| Pantoprazole Sodium | Generic | 168 | 86 | $2,763 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 114 | 113 | $8,930 |
| Omeprazole | Generic | 60 | 31 | $1,142 |
| Famotidine | Generic | 52 | 33 | $968 |
| Lubiprostone | Generic | 32 | 11 | $12,361 |
| Linzess (Linaclotide) | Brand | 31 | 0 | $27,273 |
| Dicyclomine Hcl | Generic | 26 | 14 | $433 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 19 | 19 | $292 |
Hospital affiliations
Frequently asked questions
What is Dr. Chaudhary Khan's medical specialty?
Dr. Chaudhary Khan practices Gastroenterology Physician in O Fallon, MO.
Where does Dr. Chaudhary Khan practice?
Dr. Chaudhary Khan practices at 20 Progress Point Pkwy Ste 206, O Fallon, MO 633682207. Office phone: 6363441073.
What is Dr. Chaudhary Khan's NPI?
Dr. Chaudhary Khan's National Provider Identifier (NPI) is 1649252461, issued by NPPES.
Does Dr. Chaudhary Khan accept Medicare assignment?
Yes. Dr. Chaudhary Khan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chaudhary Khan commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.