ASIF SULTAN (M.D.) – Nephrology Physician, NPI 1821278474
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,527 INTERNAL MEDICINE in TN
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Provider Addresses for ASIF SULTAN (M.D.)
2001, Laurel Avenue, Fort Sanders, Knoxville, Knox County, Tennessee, 37916, United States
SUITE 202
KNOXVILLE, TN 379161810
Phone: (865) 637-5186
Fax: (865) 637-5121
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 14 Open Payments records for all available years, with a total value of $579.
Total Amount is formed as General ($579) + Research ($0) + Ownership ($0) = $579.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Calliditas Therapeutics US Inc. ($125).
Total Amount
$579
General + Research + Ownership
Payments
14
Total payment records
General Amount
$579
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Calliditas Therapeutics US Inc. | $125 |
| Amgen Inc. | $122 |
| Novo Nordisk Inc | $112 |
| Travere Therapeutics, Inc. | $93 |
| AKEBIA THERAPEUTICS INC | $68 |
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: 2008-01-04
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 |
|---|---|---|---|---|
| I20080104000318 | I | Internal Medicine | TN | 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 |
|---|---|---|---|---|
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 341 | 140 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 253 | 44 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 178 | 142 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 176 | 118 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 141 | 103 | $0 |
Insurance plans in this area (ZIP 37916)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | TN | 90935 | Hemodialysis procedure with one physician evaluation | 484 | 158 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TN | |
| Internal Medicine | TN |
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