WILLIAM GEORGE GRUBB (MD) – Nephrology Physician, NPI 1093721532
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
431 NEPHROLOGY in GA
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Provider Addresses for WILLIAM GEORGE GRUBB (MD)
3025, Shrine Road, Brunswick, Glynn County, Georgia, 31520, United States
SUITE 450
BRUNSWICK, GA 315204744
Phone: (912) 264-6133
Fax: (912) 267-1415
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 168 Open Payments records for all available years, with a total value of $3,459.
Total Amount is formed as General ($3,459) + Research ($0) + Ownership ($0) = $3,459.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Otsuka America Pharmaceutical, Inc. ($348).
Total Amount
$3,459
General + Research + Ownership
Payments
168
Total payment records
General Amount
$3,459
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2005-10-18
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 |
|---|---|---|---|---|
| I20051018000657 | I | Nephrology | GA | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 831 | 391 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 264 | 103 | $0 |
| 99291 | Critical care, first 30-74 minutes | 173 | 46 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 107 | 16 | $0 |
| 90935 | Hemodialysis procedure with physician evaluation | 99 | 31 | $0 |
Insurance plans in this area (ZIP 31520)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | GA | 36556 | Insertion of central venous catheter for infusion, patient 5 years or older | 37 | 30 |
| NEPHROLOGY | GA | 90961 | Dialysis services (2-3 physician visits per month), patient 20 years of age and older | 143 | 73 |
| NEPHROLOGY | GA | 90966 | Home dialysis services per month, patient 20 years of age or older | 174 | 24 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| N E P H R O L O G Y | GA | |
| Physician Assistant | FL | |
| N E P H R O L O G Y | GA | |
| N E P H R O L O G Y | GA | |
| Physician Assistant | GA | |
| Nurse Practitioner | GA | |
| N E P H R O L O G Y | SC | |
| N E P H R O L O G Y | GA | |
| Nurse Practitioner | GA | |
| N E P H R O L O G Y | GA |
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