NATHANIAL I KIELER (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1144282773
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
354 PATHOLOGY in WI
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Provider Addresses for NATHANIAL I KIELER (M.D.)
200, East Washington Street, 1, Appleton, Outagamie County, Wisconsin, 54911, United States
P O BOX 8031
APPLETON, WI 549128031
Phone: (800) 236-1489
Type: Mailing
Bellin Hospital Green Bay, 744, South Webster Avenue, Astor, Green Bay, Brown County, Wisconsin, 54305, United States
GREEN BAY, WI 543013505
Phone: (920) 433-3653
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $21.
Total Amount is formed as General ($21) + Research ($0) + Ownership ($0) = $21.
Last reported payment date: 2023-04-27 • Largest payer in this snapshot: Cepheid ($21).
Total Amount
$21
General + Research + Ownership
Payments
1
Total payment records
General Amount
$21
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-04-27
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Cepheid | $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: 2006-09-01
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 |
|---|---|---|---|---|
| I20060901000358 | I | Pathology | WI | 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 |
|---|---|---|---|---|
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 549 | 107 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 469 | 293 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 155 | 114 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 78 | 57 | $0 |
| 88344 | Special stained specimen slides to examine tissue, each multiplex procedure | 59 | 16 | $0 |
Insurance plans in this area (ZIP 54912)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | WI | |
| - | WI | |
| Nurse Practitioner | WI | |
| Physical Therapist In Private Practice | WI | |
| - | WI | |
| - | WI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | WI | |
| Nurse Practitioner | WA | |
| Certified Registered Nurse Anesthetist (Crna) | WI | |
| Physical Therapist In Private Practice | WI |
Reviews
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