DR. NICOLAS W SHAMMAS (M.D.) – Interventional Cardiology Physician, NPI 1922087857
Interventional Cardiology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
322 CARDIOVASCULAR DISEASE (CARDIOLOGY) in IA
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Provider Addresses for DR. NICOLAS W SHAMMAS (M.D.)
1236, East Rusholme Street, Davenport, Scott County, Iowa, 52803, United States
SUITE 300
DAVENPORT, IA 528032473
Phone: (563) 324-2992
Fax: (563) 888-0499
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 168 Open Payments records for all available years, with a total value of $200,529.
Total Amount is formed as General ($169,801) + Research ($30,728) + Ownership ($0) = $200,529.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: AngioDynamics, Inc. ($34,714).
Total Amount
$200,529
General + Research + Ownership
Payments
168
Total payment records
General Amount
$169,801
General payments
Research Amount
$30,728
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AngioDynamics, Inc. | $34,714 |
| Merck Sharp & Dohme LLC | $32,675 |
| Bayer Healthcare Pharmaceuticals Inc. | $30,172 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $29,373 |
| Janssen Pharmaceuticals, Inc | $21,859 |
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: 2006-12-06
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 |
|---|---|---|---|---|
| I20060104000363 | I | Cardiovascular Disease (Cardiology) | IA | TBD |
| I20061206000049 | I | Interventional Cardiology | 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 |
|---|---|---|---|---|
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 412 | 407 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 382 | 322 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 352 | 312 | $0 |
| A9555 | Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries | 312 | 155 | $0 |
| 93970 | Ultrasound study of arm or leg veins with compression and maneuvers | 278 | 277 | $0 |
Insurance plans in this area (ZIP 52803)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERVENTIONAL CARDIOLOGY | IA | 76942 | Ultrasonic guidance imaging supervision and interpretation for insertion of needle | 12 | 11 |
| INTERVENTIONAL CARDIOLOGY | IA | 92928 | Catheter insertion of stents in major coronary artery or branch, accessed through the skin | 21 | 17 |
| INTERVENTIONAL CARDIOLOGY | IA | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 66 | 62 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | IA | |
| Nurse Practitioner | IL | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology), Pediatric Medicine | IA | |
| Nurse Practitioner | IL | |
| Internal Medicine | IL | |
| Nurse Practitioner | IL | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | IA | |
| Nurse Practitioner | IA | |
| Cardiac Electrophysiology, Interventional Cardiology, Cardiovascular Disease (Cardiology) | IA | |
| Nurse Practitioner | IA |
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