MICHAEL EMANUEL GRILLIS (DO) – Surgery Physician, NPI 1508974494
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,600 GENERAL SURGERY in OH
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Provider Addresses for MICHAEL EMANUEL GRILLIS (DO)
Hayes Avenue, Downtown Fremont Historic District, Fremont, Sandusky County, Ohio, 43420, United States
FREMONT, OH 434202632
Phone: (419) 355-8488
Fax: (419) 355-8890
Type: Location
County Road, Randolph, Fremont County, Iowa, 51649, United States
FREMONT, OH 434209253
Phone: (419) 334-4383
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $1,111.
Total Amount is formed as General ($1,111) + Research ($0) + Ownership ($0) = $1,111.
Last reported payment date: 2023-09-22 • Largest payer in this snapshot: Intuitive Surgical, Inc. ($1,090).
Total Amount
$1,111
General + Research + Ownership
Payments
3
Total payment records
General Amount
$1,111
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-09-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Intuitive Surgical, Inc. | $1,090 |
| Smith+Nephew, Inc. | $21 |
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: 2010-08-02
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 |
|---|---|---|---|---|
| I20100802000067 | I | General Surgery | OH | 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 |
|---|---|---|---|---|
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 92 | 92 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 51 | 51 | $0 |
| G0121 | Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 44 | 44 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 37 | 34 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 37 | 37 | $0 |
Insurance plans in this area (ZIP 43420)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GENERAL SURGERY | OH | 45385 | Removal of polyps or growths of large bowel using an endoscope | 41 | 41 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | OH | |
| Nurse Practitioner | OH | |
| Nurse Practitioner | OH | |
| - | OH | |
| Certified Nurse Midwife (Cnm) | OH | |
| Nurse Practitioner | OH | |
| Nurse Practitioner | OH | |
| Clinical Social Worker | OH | |
| Nurse Practitioner | OH | |
| Family Practice | MI |
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