Eric Kallwitz, M.D.
NPI 1275716607 · Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Kallwitz, M.D. is a Gastroenterology Physician provider in Chicago, IL (NPI 1275716607).
Provider details
- NPI number
- 1275716607
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036113292 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
888 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 305 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 199 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 140 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 91 | $81 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $68 |
| Hospital Discharge Day Management, 30 Minutes Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ursodiol | 245 | 51 |
| Carvedilol | 212 | 53 |
| Furosemide | 190 | 49 |
| Tacrolimus | 167 | 49 |
| Spironolactone | 149 | 40 |
| Mycophenolate Sodiumbrand: Mycophenolic Acid | 82 | 23 |
| Pantoprazole Sodium | 80 | 23 |
| Prednisone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-12-07
- Last updated
- 2023-01-31
- Certified
- 2023-01-31
Frequently asked questions
- What is Eric Kallwitz's NPI number?
- Eric Kallwitz's National Provider Identifier (NPI) is 1275716607, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Kallwitz's specialty?
- Eric Kallwitz is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Eric Kallwitz located?
- Eric Kallwitz's practice location on file with NPPES is 840 S Wood St Fl 7, Chicago, IL 60612-4325.
- What is Eric Kallwitz's phone number?
- The practice phone number listed in the NPPES registry for Eric Kallwitz is (312) 996-6651.
- Does Eric Kallwitz accept Medicare?
- Eric Kallwitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Kallwitz's NPI active?
- Yes — Eric Kallwitz's NPI (1275716607) is active in the NPPES registry as of the last update on 2023-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.