BRIAN WILLIAM NIELSEN (M.D.) – Obstetrics & Gynecology Physician, NPI 1851342349
Obstetrics & Gynecology Physician
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Profile Insights
NPPES metrics only — not quality of care.
119 OBSTETRICS/GYNECOLOGY in VT
Provider Addresses for BRIAN WILLIAM NIELSEN (M.D.)
601 JOHN ST STE N1100
KALAMAZOO, MI 490075349
Phone: (269) 341-7887
Type: Mailing
111 Colchester Ave
ACC, MP, Level 4
Burlington, VT 054011473
Phone: (802) 847-1400
Type: Location
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: 2025-02-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 5 Medicare enrollment records; no due dates published yet.
Enrollment records
5
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 |
|---|---|---|---|---|
| I20060630000009 | I | Obstetrics/Gynecology | MI | TBD |
| I20240724001888 | I | Obstetrics/Gynecology | ND | TBD |
| I20240913002577 | I | Obstetrics/Gynecology | KY | TBD |
| I20240913003289 | I | Obstetrics/Gynecology | OH | TBD |
| I20250224001823 | I | Obstetrics/Gynecology | AL | 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 49007)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL | |
| Orthopedic Surgery | IN | |
| Nurse Practitioner | KY | |
| Nurse Practitioner | IL | |
| Family Practice | IL | |
| Nurse Practitioner | KY | |
| - | IL | |
| Internal Medicine | KY | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL |
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