Maria C. Castellano, M.D.
NPI 1306950100ActiveIndividual· Internal Medicine, Gastroenterology· Valdosta, GA
Internal Medicine, Gastroenterology (M.D.) in Valdosta, Georgia, licensed in GA, with an NPI issued in August 2006. In 2024 Medicare paid $140,822 for 633 patients, and Part D covered 702 of their prescriptions, 79% of them generic. Janssen Biotech, Inc. was the largest of 3 companies reporting payments in 2025, $140.47 in all, mostly education. Lists Sgmc Health and 1 other hospital as hospital affiliations.
Overview
| NPI | 1306950100 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 18, 2006 |
| Last updated in NPPES | Feb 3, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 045419 | 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 - Gastroenterology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 633 |
|---|---|
| Services billed | 1,477 across 26 procedure codes |
| Paid by Medicare | $140,822 |
Part D prescriptions in 2024
| Prescriptions (claims) | 702 · 944 30-day fills |
|---|---|
| Patients | 184 |
| Total drug cost | $135,992 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Sgmc HealthValdosta, GA
- Sgmc Health LanierLakeland, GA
Industry payments (Open Payments)
- 2025$140.47 · 3 payments from 3 companies
- 2024$183.49 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $99.00 | 1 |
| Gilead Sciences, Inc. | $22.14 | 1 |
| Ironwood Pharmaceuticals, Inc | $19.33 | 1 |
What the 2025 payments were for
- Education$99.00 · 1 payment
- Food and Beverage$41.47 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Valdosta
- 1316933823
- 1518480250
- 1699703041
- 1942652524
- 1114962255
- 1164069472
- 1568789329
- 1871827071
- 1811850373