DR. SHAWNA LYNN FREEMAN-NGAU (M.D.) – Anesthesiology Physician, NPI 1639384472
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,716 ANESTHESIOLOGY in MI
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Provider Addresses for DR. SHAWNA LYNN FREEMAN-NGAU (M.D.)
MidMichigan Medical Center - Gratiot, 300, East Warwick Drive, Alma, Gratiot County, Michigan, 48801, United States
PO BOX 423
ALMA, MI 488011014
Phone: (402) 559-4081
Fax: (989) 463-5900
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 2 Open Payments records for all available years, with a total value of $40.
Total Amount is formed as General ($40) + Research ($0) + Ownership ($0) = $40.
Last reported payment date: 2024-06-20 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($40).
Total Amount
$40
General + Research + Ownership
Payments
2
Total payment records
General Amount
$40
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $40 |
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: 2010-08-19
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 |
|---|---|---|---|---|
| I20100819000204 | I | Anesthesiology | NE | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 48801)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | NE | |
| A N E S T H E S I O L O G Y | NE | |
| A N E S T H E S I O L O G Y | NE | |
| - | NE | |
| Certified Registered Nurse Anesthetist (Crna) | NE | |
| - | IA | |
| A N E S T H E S I O L O G Y | NE | |
| Certified Registered Nurse Anesthetist (Crna) | IA | |
| A N E S T H E S I O L O G Y | NE | |
| A N E S T H E S I O L O G Y | NE |
Reviews
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