SANDRA L GADSON (MD) – Nephrology Physician, NPI 1841297348
Nephrology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
269 NEPHROLOGY in IN
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Provider Addresses for SANDRA L GADSON (MD)
120 W 22ND ST STE 200
OAK BROOK, IL 605231563
Phone: (630) 575-5000
Type: Mailing
90, West 86th Avenue, Merrillville, Lake County, Indiana, 46410, United States
MERRILLVILLE, IN 464107086
Phone: (219) 791-1555
Fax: (219) 791-1560
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 52 Open Payments records for all available years, with a total value of $1,118.
Total Amount is formed as General ($1,118) + Research ($0) + Ownership ($0) = $1,118.
Last reported payment date: 2024-11-21 • Largest payer in this snapshot: Fresenius USA Marketing, Inc. ($248).
Total Amount
$1,118
General + Research + Ownership
Payments
52
Total payment records
General Amount
$1,118
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Fresenius USA Marketing, Inc. | $248 |
| Cook Medical LLC | $128 |
| AstraZeneca Pharmaceuticals LP | $108 |
| Travere Therapeutics, Inc. | $74 |
| Ardelyx, Inc. | $71 |
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: 2017-03-20
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 |
|---|---|---|---|---|
| I20170320002272 | I | Nephrology | IL | 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 |
|---|---|---|---|---|
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 115 | 25 | $0 |
| 99426 | Principal care management services for a single high-risk disease, first 30 minutes of clinical staff time directed by health care professional, per calendar month | 60 | 18 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 48 | 26 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 41 | 21 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 15 | 12 | $0 |
Insurance plans in this area (ZIP 60523)
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Provider's Procedures
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