John A. Masson, M.D.
NPI 1134100605ActiveIndividual· Internal Medicine, Pulmonary Disease· Clearwater, FL
Internal Medicine, Pulmonary Disease (M.D.) with Baycare Medical Group, Inc. and 1 other group, practicing in Clearwater, Florida. Their prescriptions cost Medicare Part D more than their services did: $2,955,627 for 1,766 claims, against $165,506 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 15 companies reporting payments in 2025, $1,179 in all, mostly food and beverage. Lists Adventhealth North Pinellas and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1134100605 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 10, 2005 |
| Last updated in NPPES | May 19, 2026 |
| Certified by provider | May 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | ME84169 | FL |
| Internal Medicine, Critical Care Medicine | 207RC0200X | ME84169 | FL |
| Internal Medicine, Sleep Medicine | 207RS0012X | ME84169 | FL |
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 - Pulmonary Disease (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 611 |
|---|---|
| Services billed | 1,881 across 35 procedure codes |
| Paid by Medicare | $165,506 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,766 · 2,437 30-day fills |
|---|---|
| Patients | 268 |
| Total drug cost | $2,955,627 |
| Generic share | 34% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
Medical groups
- Baycare Medical Group, Inc.Clearwater, FL · 1,547 clinicians
- Bay Area Chest Physicians P AClearwater, FL · 16 clinicians
Hospital affiliations
- Adventhealth North PinellasTarpon Springs, FL
- Mease Countryside HospitalSafety Harbor, FL
- Mease Dunedin HospitalDunedin, FL
- Morton Plant HospitalClearwater, FL
Industry payments (Open Payments)
- 2025$1,179 · 55 payments from 15 companies
- 2024$1,272 · 47 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $177.23 | 14 |
| Glaxosmithkline, LLC. | $156.83 | 10 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $137.36 | 3 |
| Merck Sharp & Dohme LLC | $134.89 | 5 |
| Abbvie Inc. | $114.91 | 5 |
What the 2025 payments were for
- Food and Beverage$1,090 · 54 payments
- Education$88.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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