DR. MICHAEL GRASSI (M.D.) – Internal Medicine Physician, NPI 1952340143
Internal Medicine Physician
Main info
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. MICHAEL GRASSI (M.D.)
15 Salt Creek Ln
Suite 111
Hinsdale, IL 605212926
Phone: (630) 371-0133
Fax: (630) 371-0138
Type: Location
North Memorial Medical Center, 3300, Oakdale Avenue North, Robbinsdale, Hennepin County, Minnesota, 55422, United States
ROBBINSDALE, MN 554222926
Phone: (763) 581-6560
Fax: (763) 581-4771
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: 2017-09-25
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 |
|---|---|---|---|---|
| I20050308001054 | I | Internal Medicine | IL | TBD |
| I20170925000414 | I | Internal Medicine | MS | 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 60521)
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