MARC J BERNSTEIN (M.D.) – Gastroenterology Physician, NPI 1336110543
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
489 GASTROENTEROLOGY in MO
Provider Addresses for MARC J BERNSTEIN (M.D.)
1, Clerbrook Lane, Ladue, Saint Louis County, Missouri, 63124, United States
SAINT LOUIS, MO 631241202
Phone:
Type: Mailing
621 S NEW BALLAS RD STE 598A
SAINT LOUIS, MO 631418262
Phone: (314) 251-3380
Fax: (314) 251-3385
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $16.
Total Amount is formed as General ($16) + Research ($0) + Ownership ($0) = $16.
Last reported payment date: 2023-10-27 • Largest payer in this snapshot: Mirum Pharmaceuticals, Inc. ($16).
Total Amount
$16
General + Research + Ownership
Payments
1
Total payment records
General Amount
$16
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-10-27
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Mirum Pharmaceuticals, Inc. | $16 |
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: 2009-06-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
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 |
|---|---|---|---|---|
| I20090629000066 | I | Gastroenterology | MO | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 149 | 137 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 69 | 62 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 33 | 33 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 33 | 33 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 32 | 32 | $0 |
Insurance plans in this area (ZIP 63124)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | MO | 45385 | Removal of polyps or growths of large bowel using an endoscope | 28 | 28 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | MO | |
| - | MO | |
| G A S T R O E N T E R O L O G Y | NC | |
| General Surgery | MO | |
| G A S T R O E N T E R O L O G Y | MO | |
| Gastroenterology, Internal Medicine | MO | |
| G A S T R O E N T E R O L O G Y | MO | |
| - | MO | |
| G A S T R O E N T E R O L O G Y | MO | |
| Gastroenterology, Internal Medicine | MO |
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