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Edit this profileAt a glance
- 1520 W Harrison St, Chicago, IL 60607
About Dr. Chapman
Christopher G. Chapman, M.D. is a healthcare provider in Chicago, IL specializing in gastroenterology. Christopher trained at Johns Hopkins University School of Medicine, graduating in 2008. Medicare claims data shows Christopher provided 318 services to 270 patients. The services billed most often include biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, review by radiologist of image from tube placement into bile duct using an endoscope, and insertion of stent into pancreatic or bile duct using a flexible endoscope. This provider record is associated with NPI 1235378043.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (312) 942-8651
- Email not available
Practice Locations
1520 W HARRISON ST
Chicago, IL 60607
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
318 services · 270 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
67 | As often as other peers in Gastroenterology |
| Insertion of stent into pancreatic or bile duct using a flexible endoscope | Procedure | 43274 |
36 | More often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
33 | As often as other peers in Gastroenterology |
| Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | Procedure | 43264 |
31 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
29 | Less often than most peers in Gastroenterology |
| Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43242 |
19 | As often as other peers in Gastroenterology |
| Removal of large bowel tissue using a flexible endoscope | Procedure | 45390 |
15 | As often as other peers in Gastroenterology |
| Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth | Procedure | 43237 |
13 | Less often than most peers in Gastroenterology |
| Review by radiologist of image from tube placement into bile duct using an endoscope | Imaging | 74328 |
45 | More often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
18 | Less often than most peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other gastroenterologists in Chicago 8
Same specialty, same city.
Trained at Johns Hopkins University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Johns Hopkins University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Christopher G. Chapman's specialty?
Christopher G. Chapman is a gastroenterologist in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Christopher G. Chapman?
Christopher G. Chapman is listed at 1520 W Harrison St, Chicago, IL 60607. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Christopher G. Chapman?
The number on file is (312) 942-8651. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Christopher G. Chapman?
Christopher G. Chapman's National Provider Identifier is 1235378043. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Christopher G. Chapman's education?
Christopher G. Chapman attended Johns Hopkins University School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Christopher G. Chapman have?
Christopher G. Chapman has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What is Christopher G. Chapman known for?
According to Medicare billing data, Christopher G. Chapman performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, insertion of stent into pancreatic or bile duct using a flexible endoscope and biopsy of large bowel using a flexible endoscope; reads or performs imaging such as review by radiologist of image from tube placement into bile duct using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Christopher G. Chapman's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Christopher G. Chapman. If this is you, claiming it is free.
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