Maribel Yap Mamonluk-Chua, MD
NPI 1518957307ActiveIndividual· Allergy & Immunology· Washington, DC
Allergy & Immunology (MD) with Mamonluk Chua Medical Group, PC, practicing in Washington, District of Columbia. Their prescriptions cost Medicare Part D more than their services did: $1,027,264 for 1,243 claims, against $95,289 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 10 companies reporting payments in 2025, $1,530 in all, mostly food and beverage.
Overview
| NPI | 1518957307 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 24, 2005 |
| Last updated in NPPES | Feb 15, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | MD 037327 | 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 - Allergy/Immunology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 86 |
|---|---|
| Services billed | 3,519 across 37 procedure codes |
| Paid by Medicare | $95,289 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,243 · 2,264 30-day fills |
|---|---|
| Patients | 127 |
| Total drug cost | $1,027,264 |
| Generic share | 61% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Allergy/Immunology |
| Telehealth | Offers telehealth |
Medical group
- Mamonluk Chua Medical Group, PCWashington, DC · 2 clinicians
Industry payments (Open Payments)
- 2025$1,530 · 66 payments from 10 companies
- 2024$1,475 · 66 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $502.43 | 23 |
| Genzyme Corporation | $223.69 | 9 |
| Glaxosmithkline, LLC. | $191.59 | 9 |
| Amgen Inc. | $175.98 | 8 |
| Novartis Pharmaceuticals Corporation | $158.61 | 6 |
What the 2025 payments were for
- Food and Beverage$1,530 · 66 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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