Callie Elizabeth Williams, DNP, AGNP-C
NPI 1336022417ActiveIndividual· Nurse Practitioner· Towson, MD
Nurse Practitioner (DNP, AGNP-C) with Greater Baltimore Medical Center, practicing in Towson, Maryland. Enrolled in Medicare as practitioner - nurse practitioner. Genzyme Corporation was the largest of 2 companies reporting payments in 2025, $56.81 in all, mostly food and beverage. Lists Greater Baltimore Medical Center as a hospital affiliation.
Overview
| NPI | 1336022417 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP, AGNP-C |
| Sole proprietor | No |
| NPI issued | Jul 28, 2025 |
| Last updated in NPPES | Jan 22, 2026 |
| Certified by provider | Jan 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | R242805 | 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 - Nurse Practitioner (MD) |
|---|
Education and affiliations
| Graduation year | 2025 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Greater Baltimore Medical CenterTowson, MD · 354 clinicians
Hospital affiliation
- Greater Baltimore Medical CenterBaltimore, MD
Industry payments (Open Payments)
- 2025$56.81 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $29.57 | 1 |
| Regeneron Healthcare Solutions, Inc. | $27.24 | 1 |
What the 2025 payments were for
- Food and Beverage$56.81 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 nurse practitioners in Towson · All nurse practitioners in Maryland