DAVID S ATLAS (M.D.) – Gastroenterology Physician, NPI 1952375636
Gastroenterology Physician
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Profile Insights
NPPES metrics only — not quality of care.
978 GASTROENTEROLOGY in IL
Provider Addresses for DAVID S ATLAS (M.D.)
19550 Governors Hwy
Flossmoor, IL 604222125
Phone: (888) 824-0200
Type: Location
2315 E 93RD ST STE 440
CHICAGO, IL 606173951
Phone: (708) 333-0001
Type: Mailing
1710, Randall Road, Elgin, Kane County, Illinois, 60123, United States
SUITE 280
ELGIN, IL 601239400
Phone: (847) 931-7550
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-06-03
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Past revalidation due date
Earliest CMS due date was 2023-12-31 (891 days ago).
Enrollment records
1
Earliest due date
2023-12-31
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20110603000147 | I | Gastroenterology | IL | 2023-12-31 |
What to do next
- Verify current status on the CMS Revalidation Lookup Tool immediately.
- Complete revalidation in PECOS or contact your Medicare Administrative Contractor (MAC).
- Overdue revalidation can lead to deactivation of Medicare billing privileges.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 95 | 56 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 85 | 81 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 53 | 30 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 42 | 42 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 37 | 37 | $0 |
Insurance plans in this area (ZIP 60422)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | IL | |
| A N E S T H E S I O L O G Y | IL | |
| - | MN | |
| - | IL | |
| - | IL | |
| Rheumatology, Internal Medicine | IL | |
| - | IL | |
| Internal Medicine | IL | |
| P S Y C H I A T R Y | IL | |
| - | IL |
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