Ryan Chua Chua, M.D.
NPI 1659534501ActiveIndividual· Internal Medicine, Pulmonary Disease· Leominster, MA
Internal Medicine, Pulmonary Disease (M.D.) with Mass Lung and Allergy PC, practicing in Leominster, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $634,883 for 1,770 claims, against $268,149 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $2,831 in all, mostly food and beverage. Lists Emerson Hospital - and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1659534501 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 9, 2008 |
| Last updated in NPPES | Oct 21, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 307929 | MA |
| Internal Medicine | 207R00000X | 237513 | MA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 254196 | MA |
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 - Pulmonary Disease (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,111 |
|---|---|
| Services billed | 2,604 across 28 procedure codes |
| Paid by Medicare | $268,149 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,770 · 2,652 30-day fills |
|---|---|
| Patients | 299 |
| Total drug cost | $634,883 |
| Generic share | 41% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
Medical group
- Mass Lung and Allergy PCLeominster, MA · 10 clinicians
Hospital affiliations
- Emerson Hospital -W Concord, MA
- Marlborough HospitalMarlborough, MA
- Umass Memorial Health - Harrington HospitalSouthbridge, MA
- Umass Memorial Healthalliance HospitalsLeominster, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Industry payments (Open Payments)
- 2025$2,831 · 144 payments from 21 companies
- 2024$1,922 · 102 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $603.04 | 33 |
| Glaxosmithkline, LLC. | $592.10 | 36 |
| Regeneron Healthcare Solutions, Inc. | $206.30 | 14 |
| Genzyme Corporation | $190.96 | 11 |
| Actelion Pharmaceuticals US, Inc. | $189.84 | 7 |
What the 2025 payments were for
- Food and Beverage$2,741 · 143 payments
- Education$89.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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