Mariah Barstow Piazza, MD
NPI 1578023297ActiveIndividual· Obstetrics & Gynecology· Savannah, GA
Obstetrics & Gynecology (MD) in Savannah, Georgia, trained at Emory University School of Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $18,551 for 78 claims, against $4,090 paid for services in 2024. Sumitomo Pharma America, Inc. was the largest of 10 companies reporting payments in 2025, $305.28 in all, mostly food and beverage.
Overview
| NPI | 1578023297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 20, 2019 |
| Last updated in NPPES | Sep 6, 2023 |
| Certified by provider | Sep 6, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 96788 | GA |
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 - Obstetrics/Gynecology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 20 |
|---|---|
| Services billed | 37 across 15 procedure codes |
| Paid by Medicare | $4,090 |
Part D prescriptions in 2024
| Prescriptions (claims) | 78 · 156 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $18,551 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Savannah Multispecialty Associates LLCSavannah, GA · 125 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$305.28 · 14 payments from 10 companies
- 2024$400.85 · 21 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $82.71 | 3 |
| Astellas Pharma US Inc | $45.82 | 2 |
| Sage Therapeutics, LLC | $35.15 | 1 |
| Gebauer Company | $29.43 | 1 |
| Amgen Inc. | $27.78 | 2 |
What the 2025 payments were for
- Food and Beverage$305.28 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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