MICHAEL AMBROSE (MD) – Internal Medicine Physician, NPI 1538398680
Internal Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for MICHAEL AMBROSE (MD)
605 N 12th St
Mount Vernon, IL 628642857
Phone: (618) 241-2212
Fax: (618) 241-2508
Type: Location
5036 N ILLINOIS ST STE 1
FAIRVIEW HEIGHTS, IL 622083418
Phone: (618) 671-6800
Type: Mailing
605, North 12th Street, Mount Vernon, Jefferson County, Illinois, 62864, United States
MOUNT VERNON, IL 62864
Phone: (618) 241-2212
Fax: (618) 241-2508
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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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: 2021-09-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20040707000149 | I | Internal Medicine | IL | TBD |
| I20210913001283 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 487 | 195 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 132 | 124 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 63 | 63 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 51 | 40 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 62864)
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Provider's Procedures
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