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Edit this profileAt a glance
- 840 S Wood St Fl 7, Mc 716, Chicago, IL 60612
About Dr. Kallwitz
Eric R. Kallwitz, M.D. practices gastroenterology in Chicago, IL. Eric is a 2002 graduate of Rush Medical College of Rush University. Eric is also listed as specializing in internal medicine. Medicare claims data shows Eric provided 888 services to 525 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes. The provider's National Provider Identifier (NPI) is 1275716607.
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) 996-6651
- Email not available
Practice Locations
840 S WOOD ST FL 7 MC 716
Chicago, IL 60612
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
888 services · 525 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
305 | More 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 |
199 | More than most peers in Gastroenterology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
140 | More often than most peers in Gastroenterology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
91 | More often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
29 | As often as other peers in Gastroenterology |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
27 | More often than most peers in Gastroenterology |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
24 | As often as other peers in Gastroenterology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
24 | As often as other peers in Gastroenterology |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
20 | Less often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
18 | As often as other 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 5
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 — 23 related providers in 3 groups
Other gastroenterologists in Chicago 8
Same specialty, same city.
Trained at Rush Medical College of Rush University 7
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Rush Medical College of Rush University 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Eric R. Kallwitz's specialty?
Eric R. Kallwitz 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 Eric R. Kallwitz?
Eric R. Kallwitz is listed at 840 S Wood St Fl 7 Mc 716, Chicago, IL 60612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Eric R. Kallwitz?
The number on file is (312) 996-6651. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Eric R. Kallwitz?
Eric R. Kallwitz's National Provider Identifier is 1275716607. 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 Eric R. Kallwitz's education?
Eric R. Kallwitz attended Rush Medical College of Rush University, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Eric R. Kallwitz have?
Eric R. Kallwitz has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What is Eric R. Kallwitz known for?
According to Medicare billing data, Eric R. Kallwitz the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Eric R. Kallwitz's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Eric R. Kallwitz. If this is you, claiming it is free.
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