Jill Elise Mackey, M.D.
NPI 1578505863ActiveIndividual· Family Medicine· Wilmington, DE
Family Medicine (M.D.) in Wilmington, Delaware, trained at Jefferson Medical College of Thomas Jefferson University (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $6,103,301 for 31,178 claims, against $109,368 paid for services in 2024. Corcept Therapeutics was the largest of 23 companies reporting payments in 2025, $2,683 in all, mostly food and beverage.
Overview
| NPI | 1578505863 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Apr 29, 2024 |
| Certified by provider | Apr 29, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | C10004721 | DE |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 385 |
|---|---|
| Services billed | 1,391 across 30 procedure codes |
| Paid by Medicare | $109,368 |
Part D prescriptions in 2024
| Prescriptions (claims) | 31,178 · 38,586 30-day fills |
|---|---|
| Patients | 20,397 |
| Total drug cost | $6,103,301 |
| Generic share | 14% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical groups
- Mackey Family Practice LLCWilmington, DE · 4 clinicians
- Delaware Medical Group, LLCWilmington, DE · 3 clinicians
Hospital affiliations
- Bayhealth Medical Center, Kent CampusDover, DE
- Christiana HospitalNewark, DE
- Union Hospital of Cecil CountyElkton, MD
Other facilities
- Bayada Home Health Care, IncHome health agency · Wilmington, DE
- Christianacare HomehealthHome health agency · Wilmington, DE
Industry payments (Open Payments)
- 2025$2,683 · 135 payments from 23 companies
- 2024$2,817 · 134 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $566.55 | 18 |
| Novo Nordisk Inc | $360.35 | 19 |
| Astellas Pharma US Inc | $264.06 | 14 |
| Lilly USA, LLC | $226.77 | 12 |
| Glaxosmithkline, LLC. | $213.73 | 12 |
What the 2025 payments were for
- Food and Beverage$2,633 · 134 payments
- Consulting Fee$50.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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