Carl Atallah, DO
NPI 1922269190 · Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carl Atallah, DO is a Gastroenterology Physician provider in Chicago, IL (NPI 1922269190).
Provider details
- NPI number
- 1922269190
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 036127620 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
491 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 130 | $126 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 88 | $172 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 72 | $102 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 39 | $161 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 35 | $172 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 204 | 106 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 179 | 172 |
| Famotidine | 80 | 41 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 45 | 43 |
| Dicyclomine Hcl | 37 | 16 |
| Sucralfate | 33 | 13 |
| Omeprazole | 31 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,662 across 70 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-20
- Last updated
- 2025-04-08
- Certified
- 2025-04-08
Frequently asked questions
- What is Carl Atallah's NPI number?
- Carl Atallah's National Provider Identifier (NPI) is 1922269190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carl Atallah's specialty?
- Carl Atallah is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Carl Atallah located?
- Carl Atallah's practice location on file with NPPES is 3000 N Halsted St Ste 623, Chicago, IL 60657-5196.
- What is Carl Atallah's phone number?
- The practice phone number listed in the NPPES registry for Carl Atallah is (773) 281-5818.
- Does Carl Atallah accept Medicare?
- Carl Atallah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carl Atallah's NPI active?
- Yes — Carl Atallah's NPI (1922269190) is active in the NPPES registry as of the last update on 2025-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.