GENEVIEVE A. SIERMINSKI (M.D.) – Nephrology Physician, NPI 1376742858
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
434 NEPHROLOGY in MI
Provider Addresses for GENEVIEVE A. SIERMINSKI (M.D.)
G1071 N BALLENGER HWY
SUITE 310
FLINT, MI 485044453
Phone: (810) 238-4172
Fax: (810) 238-4153
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 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: 2024-08-26 • Largest payer in this snapshot: Fresenius USA Marketing, Inc. ($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
2024-08-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Fresenius USA Marketing, 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: 2007-08-13
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 |
|---|---|---|---|---|
| I20070813000239 | I | Nephrology | MI | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 641 | 232 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 332 | 52 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 303 | 158 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 184 | 76 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 135 | 103 | $0 |
Insurance plans in this area (ZIP 48504)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | MI | 90961 | Dialysis services (2-3 physician visits per month), patient 20 years of age and older | 24 | 19 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | MI | |
| Nephrology, Internal Medicine | MI | |
| Nurse Practitioner | MI | |
| Internal Medicine, Nephrology | IL | |
| Nurse Practitioner | MI | |
| Nephrology, Internal Medicine | MI | |
| Nurse Practitioner | MI | |
| N E P H R O L O G Y | MI |
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