DR. KARTHIK RAGUNATHAN (MD) – Gastroenterology Physician, NPI 1497195457
Gastroenterology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
128 GASTROENTEROLOGY in KS
Provider Addresses for DR. KARTHIK RAGUNATHAN (MD)
720 SW LANE ST
TOPEKA, KS 666061539
Phone: (785) 354-0539
Fax: (785) 270-4877
Type: Location
1500 SW 10TH AVE
MEDICAL STAFF SERVICES
TOPEKA, KS 666041301
Phone: (785) 354-6241
Fax: (785) 270-4343
Type: Mailing
5012 S US HIGHWAY 75 STE 250
DENISON, TX 750204587
Phone: (903) 416-6255
Fax: (903) 416-6257
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 10 Open Payments records for all available years, with a total value of $297.
Total Amount is formed as General ($297) + Research ($0) + Ownership ($0) = $297.
Last reported payment date: 2024-09-19 • Largest payer in this snapshot: ABBVIE INC. ($170).
Total Amount
$297
General + Research + Ownership
Payments
10
Total payment records
General Amount
$297
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $170 |
| Celgene Corporation | $48 |
| Novo Nordisk Inc | $34 |
| Phathom Pharmaceuticals, Inc. | $28 |
| PFIZER INC. | $18 |
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: 2024-11-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20240315003414 | I | Gastroenterology | TX | TBD |
| I20241123000047 | I | Gastroenterology | MT | 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 |
|---|---|---|---|---|
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 237 | 234 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 213 | 196 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 187 | 184 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 152 | 86 | $0 |
| 43249 | Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 90 | 79 | $0 |
Insurance plans in this area (ZIP 66606)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| N E U R O S U R G E R Y | OK | |
| General Surgery, Vascular Surgery | TX | |
| Internal Medicine, Gastroenterology | TX | |
| Orthopedic Surgery, Sports Medicine | TX | |
| Thoracic Surgery, General Surgery | TX | |
| Orthopedic Surgery, Sports Medicine | TX | |
| Orthopedic Surgery | TX | |
| Physician Assistant | TX | |
| Physician Assistant | TX | |
| Physician Assistant | NM |
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