GREG MARCO (MD) – Critical Care Medicine (Internal Medicine) Physician, NPI 1427098433
Critical Care Medicine (Internal Medicine) Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
681 CRITICAL CARE (INTENSIVISTS) in MI
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Provider Addresses for GREG MARCO (MD)
Spectrum Health Butterworth Hospital, 100, Michigan Street Northeast, Grand Rapids, Kent County, Michigan, 49503, United States
MC 845
GRAND RAPIDS, MI 495032560
Phone:
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $251.
Total Amount is formed as General ($251) + Research ($0) + Ownership ($0) = $251.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: ABIOMED ($208).
Total Amount
$251
General + Research + Ownership
Payments
7
Total payment records
General Amount
$251
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABIOMED | $208 |
| Ethicon Inc. | $43 |
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: 2007-05-18
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 |
|---|---|---|---|---|
| I20070518000378 | I | Critical Care (Intensivists) | MI | 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 |
|---|---|---|---|---|
| 99291 | Critical care, first 30-74 minutes | 135 | 44 | $0 |
| 99292 | Critical care, each additional 30 minutes | 31 | 14 | $0 |
Insurance plans in this area (ZIP 49503)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Critical Care (Intensivists) | IL | |
| Physician Assistant | MI | |
| Physician Assistant | MI | |
| Physician Assistant | MI | |
| - | MI | |
| Vascular Surgery | IL | |
| - | MI | |
| - | MI | |
| A N E S T H E S I O L O G Y | TX | |
| Clinical Social Worker | MI |
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