Tammy Hadley, M.D.
NPI 1598766958ActiveIndividual· Internal Medicine· Lutherville, MD
Internal Medicine (M.D.) in Lutherville, Maryland, trained at Johns Hopkins University School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $80,539 for 1,759 claims, against $41,989 paid for services in 2024. Novo Nordisk Inc was the largest of 8 companies reporting payments in 2025, $363.21 in all, mostly food and beverage.
Overview
| NPI | 1598766958 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 9, 2005 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | D0047668 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 132 |
|---|---|
| Services billed | 557 across 28 procedure codes |
| Paid by Medicare | $41,989 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,759 · 3,794 30-day fills |
|---|---|
| Patients | 164 |
| Total drug cost | $80,539 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Greenspring Personal Medicine, LLCLutherville, MD · 6 clinicians
Hospital affiliation
- Johns Hopkins Hospital, theBaltimore, MD
Industry payments (Open Payments)
- 2025$363.21 · 17 payments from 8 companies
- 2024$438.65 · 22 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $108.92 | 4 |
| Pfizer Inc. | $81.87 | 4 |
| Abbvie Inc. | $54.93 | 3 |
| Exact Sciences Corporation | $39.10 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $24.53 | 1 |
What the 2025 payments were for
- Food and Beverage$363.21 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 120 internal medicine physicians in Lutherville · All internal medicine physicians in Maryland