John D. Day, MD
NPI 1811965122ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Salt Lake City, UT
Internal Medicine, Clinical Cardiac Electrophysiology (MD) in Salt Lake City, Utah, trained at Johns Hopkins University School of Medicine (class of 1995). In 2024 Medicare paid $354,339 for 729 patients, and Part D covered 718 of their prescriptions, 71% of them generic. Boston Scientific Corporation was the largest of 6 companies reporting payments in 2025, $63,582 in all, mostly consulting fees.
Overview
| NPI | 1811965122 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 11, 2006 |
| Last updated in NPPES | Dec 1, 2020 |
| Certified by provider | Dec 1, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | 4849787-1205 | UT |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 48497871205 | UT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (ID); Practitioner - Cardiac Electrophysiology (UT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 729 |
|---|---|
| Services billed | 3,945 across 55 procedure codes |
| Paid by Medicare | $354,339 |
Part D prescriptions in 2024
| Prescriptions (claims) | 718 · 1,508 30-day fills |
|---|---|
| Patients | 268 |
| Total drug cost | $230,586 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Cardiac Electrophysiology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mountainstar Cardiology St Marks LLCSalt Lake City, UT · 42 clinicians
Hospital affiliation
- St Mark's HospitalSalt Lake City, UT
Industry payments (Open Payments)
- 2025$63,582 · 66 payments from 6 companies
- 2024$81,723 · 94 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $56,196 | 51 |
| Abbott Laboratories | $7,289 | 10 |
| Becton, Dickinson and Company | $44.62 | 2 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $22.10 | 1 |
| Novartis Pharmaceuticals Corporation | $16.02 | 1 |
What the 2025 payments were for
- Consulting Fee$30,050 · 10 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$25,000 · 6 payments
- Travel and Lodging$5,424 · 20 payments
- Food and Beverage$3,109 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Clinical Cardiac Electrophysiology providers in Salt Lake City
- 1851795652
- 1942716998
- 1609229160
- 1629422159
- 1790866580
- 1871955328
- 1326525130
- 1013293620
- 1992967335
- 1467505206
- 1437504131
- 1770741886
All Internal Medicine, Clinical Cardiac Electrophysiology providers in Utah →