Mary Darden Mason, DNP, FNP-BC
NPI 1407685829ActiveIndividual· Nurse Practitioner· Berlin, MD
Nurse Practitioner (DNP, FNP-BC) with Tidalhealth Atlantic Inc and 1 other group, practicing in Berlin, Maryland. Mostly services rather than prescriptions: Medicare paid $1,561 for 17 patients in 2024, with only 40 Part D claims. Amgen Inc. was the largest of 12 companies reporting payments in 2025, $907.63 in all, mostly food and beverage. Lists Atlantic General Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1407685829 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP, FNP-BC |
| Sole proprietor | No |
| NPI issued | Aug 1, 2024 |
| Last updated in NPPES | Feb 10, 2025 |
| Certified by provider | Aug 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | R266414 | MD |
| Registered Nurse | 163W00000X | R266414 | MD |
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 - Nurse Practitioner (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 17 |
|---|---|
| Services billed | 28 across 10 procedure codes |
| Paid by Medicare | $1,561 |
Part D prescriptions in 2024
| Prescriptions (claims) | 40 · 43 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $229.10 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2024 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Tidalhealth Atlantic IncSelbyville, DE · 91 clinicians
- Tidalhealth Primary Care LLCMillsboro, DE · 65 clinicians
Hospital affiliations
- Atlantic General HospitalBerlin, MD
- Tidalhealth Peninsula Regional, IncSalisbury, MD
Other facilities
- HomecallHome health agency · Easton, MD
- Tidalhealth Home CareHome health agency · Salisbury, MD
Industry payments (Open Payments)
- 2025$907.63 · 22 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $220.24 | 2 |
| Verona Pharma, Inc. | $125.00 | 1 |
| Astrazeneca Pharmaceuticals LP | $125.00 | 1 |
| Actelion Pharmaceuticals US, Inc. | $125.00 | 1 |
| Phathom Pharmaceuticals, Inc. | $78.93 | 6 |
What the 2025 payments were for
- Food and Beverage$907.63 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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