DR. KARTHIKEYAN VISWANATHAN (DO) – Internal Medicine Physician, NPI 1396128336
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,499 FAMILY PRACTICE in AR
Provider Addresses for DR. KARTHIKEYAN VISWANATHAN (DO)
PO BOX 497
AUGUSTA, AR 720060497
Phone: (870) 347-2534
Fax: (870) 347-3492
Type: Mailing
1500 MUSEUM RD STE 104
CONWAY, AR 720324761
Phone: (501) 932-9010
Fax: (870) 569-3579
Type: Location
4546 EL CAMINO REAL STE B7
LOS ALTOS, CA 940221069
Phone: (866) 362-4246
Fax: (650) 260-6030
Type: Mailing
PO BOX 1848
MENA, AR 719531841
Phone: (479) 437-3449
Fax: (479) 243-0285
Type: Mailing
1100 N UNIVERSITY AVE STE 200
LITTLE ROCK, AR 722076360
Phone: (888) 710-8220
Fax: (479) 243-0285
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2025-01-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 4 Medicare enrollment records; no due dates published yet.
Enrollment records
4
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 |
|---|---|---|---|---|
| I20200928001291 | I | Internal Medicine | MP | TBD |
| I20210113001821 | I | Internal Medicine | TX | TBD |
| I20230123001402 | I | Internal Medicine | CA | TBD |
| I20250116000720 | I | Family Practice | CA | 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 |
|---|---|---|---|---|
| 83036 | Hemoglobin a1c level | 29 | 25 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 24 | 23 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 21 | 21 | $0 |
| 82570 | Creatinine level to test for kidney function or muscle injury | 19 | 18 | $0 |
| 82043 | Urine microalbumin (protein) level | 19 | 18 | $0 |
Insurance plans in this area (ZIP 72006)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | IL | |
| Internal Medicine | CA | |
| Internal Medicine | CA | |
| - | CA | |
| Family Practice | CA | |
| - | CA | |
| Family Practice | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| - | CA | |
| - | CA |
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