Doctor profile · Federal record
Dr. Christopher Chapman, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · Chicago, IL
- NPI 1235378043
- Accepts Medicare
- 18 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
5841 S Maryland Ave
Chicago, IL 606371447
(773) 834-5122 - Additional location
-
10600 Montgomery RD Ste 300
Montgomery, OH 452424464
(513) 794-5600 - Mailing address
-
180 Harvester Dr, Suite 110
Burr Ridge, IL 605277594
Credentials & registration
- NPI registered
- February 2009 — 17 yrs on file
- Profile last updated
- November 8, 2022
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Illinois #036128100 · Ohio #35.146804
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235378043. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
217
Distinct HCPCS
9
Medicare allowed
$37,521
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 41 | 39 | $77 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 33 | 31 | $223 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 30 | 27 | $66 | |
74328 |
Review by radiologist of image from tube placement into bile duct using an endoscope | 23 | 17 | $24 | |
43274 |
Insertion of stent into pancreatic or bile duct using a flexible endoscope | 22 | 16 | $435 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 19 | $131 | |
45390 |
Removal of large bowel tissue using a flexible endoscope | 17 | 16 | $357 | |
43242 |
Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 16 | 16 | $267 | |
43264 |
Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | 16 | 15 | $130 |
In context: peer comparison
Among 70 peers in this city , average services per provider: 239. This provider delivers 0.9× the peer median.Open Payments
Industry payments received
All-time total
$208,789
Transactions
198
Manufacturers
11
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boston Scientific Corporation | 85 | $85,597.11 | |
| Phathom Pharmaceuticals, Inc. | 57 | $48,305.55 | |
| ABBVIE INC. | 30 | $44,740.30 | |
| INTUITIVE SURGICAL, INC. | 14 | $24,789.01 | |
| Olympus Medical Systems Corporation | 6 | $3,278.25 | |
| Olympus Corporation of the Americas | 1 | $1,537.50 | |
| Cook Medical LLC | 1 | $168.72 | |
| STERIS CORPORATION | 1 | $120.03 | |
| CONMED Corporation | 1 | $110.80 | |
| Novo Nordisk Inc | 1 | $105.69 | |
| Lilly USA, LLC | 1 | $35.87 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
23
Patients
22
Total drug cost
$391
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 23 | 22 | $391 |
Frequently asked questions
What is Dr. Christopher Chapman's medical specialty?
Dr. Christopher Chapman practices Gastroenterology Physician in Chicago, IL.
Where does Dr. Christopher Chapman practice?
Dr. Christopher Chapman practices at 5841 S Maryland Ave, Chicago, IL 606371447. Office phone: 7738345122.
What is Dr. Christopher Chapman's NPI?
Dr. Christopher Chapman's National Provider Identifier (NPI) is 1235378043, issued by NPPES.
Does Dr. Christopher Chapman accept Medicare assignment?
Yes. Dr. Christopher Chapman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Chapman 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.