Mariastella Serrano, MD
NPI 1922080126ActiveIndividual· Pediatrics, Pediatric Gastroenterology· Washington, DC
Pediatrics, Pediatric Gastroenterology (MD) with Medstar Medical Group II LLC and 1 other group, practicing in Washington, District of Columbia. Medicare paid $344,547 for services to 30 patients in 2024. Mirum Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $5,286 in all, mostly consulting fees.
Overview
| NPI | 1922080126 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 15, 2005 |
| Last updated in NPPES | Aug 31, 2023 |
| Certified by provider | Aug 31, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics, Pediatric Gastroenterology Primary | 2080P0206X | MD045865 | DC |
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 - Pediatric Medicine (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 30 |
|---|---|
| Services billed | 21,944 across 11 procedure codes |
| Paid by Medicare | $344,547 |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Pediatric Medicine |
Medical groups
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
- Suburban/Nrh Medical Rehabilitation IncBethesda, MD · 941 clinicians
Industry payments (Open Payments)
- 2025$5,286 · 16 payments from 2 companies
- 2024$163.78 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mirum Pharmaceuticals, Inc. | $5,262 | 15 |
| Janssen Biotech, Inc. | $23.79 | 1 |
What the 2025 payments were for
- Consulting Fee$3,900 · 2 payments
- Travel and Lodging$1,099 · 7 payments
- Food and Beverage$286.15 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 Pediatrics, Pediatric Gastroenterology providers in Washington · All Pediatrics, Pediatric Gastroenterology providers in District of Columbia