MR. WILLIAM AARON KAY (MD) – Adult Congenital Heart Disease Physician, NPI 1700094307
Adult Congenital Heart Disease Physician
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Profile Insights
NPPES metrics only — not quality of care.
3,524 INTERNAL MEDICINE in IN
Provider Addresses for MR. WILLIAM AARON KAY (MD)
3900 ST FRANCIS WAY STE 200
LAFAYETTE, IN 479054940
Phone: (317) 962-9700
Fax: (317) 962-9704
Type: Location
3000 MACK RD STE 100
FAIRFIELD, OH 450145335
Phone: (513) 751-4222
Fax: (513) 874-3023
Type: Mailing
1910, Michigan Box Company, Detroit, Wayne County, Michigan, 48211, United States
DETROIT, MI 482781076
Phone: (317) 528-4800
Fax: (317) 865-1479
Type: Mailing
3900 St Francis Way Ste 200
Lafayette, IN 479054940
Phone: (317) 962-9700
Fax: (317) 962-9704
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 55 Open Payments records for all available years, with a total value of $1,209.
Total Amount is formed as General ($1,209) + Research ($0) + Ownership ($0) = $1,209.
Last reported payment date: 2024-11-20 • Largest payer in this snapshot: Amgen Inc. ($310).
Total Amount
$1,209
General + Research + Ownership
Payments
55
Total payment records
General Amount
$1,209
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $310 |
| Boston Scientific Corporation | $268 |
| Novartis Pharmaceuticals Corporation | $176 |
| ATRICURE, INC. | $148 |
| PFIZER INC. | $54 |
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: 2013-08-28
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20120215000621 | I | Internal Medicine | OH | TBD |
| I20130828000717 | I | Internal Medicine | IN | 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 |
|---|---|---|---|---|
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 885 | 698 | $0 |
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 332 | 325 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 144 | 107 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 135 | 124 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 84 | 84 | $0 |
Insurance plans in this area (ZIP 47905)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | IN | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 203 | 175 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Pulmonary Disease, Critical Care (Intensivists), Internal Medicine | OH | |
| Infectious Disease | OH | |
| P S Y C H I A T R Y | OH | |
| Sleep Medicine, Neurology | OH | |
| General Surgery | OH | |
| Orthopedic Surgery, Sports Medicine | OH | |
| Surgical Oncology | OH | |
| Vascular Surgery | OH | |
| Thoracic Surgery | CA | |
| General Surgery | OH |
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