GAUTHAM VISWANATHAN (M.D.) – Nephrology Physician, NPI 1427194257
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 GAUTHAM VISWANATHAN (M.D.)
35, Collier Road Northwest, A, Atlanta, Georgia, 30309, United States
STE 610
ATLANTA, GA 303091613
Phone: (404) 355-7375
Fax: (404) 350-9781
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 64 Open Payments records for all available years, with a total value of $4,475.
Total Amount is formed as General ($4,475) + Research ($0) + Ownership ($0) = $4,475.
Last reported payment date: 2024-10-07 • Largest payer in this snapshot: Otsuka America Pharmaceutical, Inc. ($3,563).
Total Amount
$4,475
General + Research + Ownership
Payments
64
Total payment records
General Amount
$4,475
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-07
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: 2014-11-12
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 |
|---|---|---|---|---|
| I20141112002193 | 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 |
|---|---|---|---|---|
| 81003 | Automated urinalysis test | 558 | 298 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 529 | 268 | $0 |
| 90970 | Dialysis services, per day, less than full month service (20 years or older) | 489 | 31 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 150 | 131 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 142 | 26 | $0 |
Insurance plans in this area (ZIP 30309)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | GA | |
| N E P H R O L O G Y | GA | |
| N E P H R O L O G Y | GA | |
| - | GA |
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