JOHN A MASSON (M.D.) – Pulmonary Disease Physician, NPI 1134100605
Pulmonary Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,454 CRITICAL CARE (INTENSIVISTS) in FL
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Provider Addresses for JOHN A MASSON (M.D.)
Morton Plant Street, Clearwater, Pinellas County, Florida, 33756, United States
SUITE 405
CLEARWATER, FL 337563398
Phone: (727) 443-0611
Fax: (727) 461-5493
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 94 Open Payments records for all available years, with a total value of $2,062.
Total Amount is formed as General ($2,062) + Research ($0) + Ownership ($0) = $2,062.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($426).
Total Amount
$2,062
General + Research + Ownership
Payments
94
Total payment records
General Amount
$2,062
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $426 |
| Actelion Pharmaceuticals US, Inc. | $199 |
| Inari Medical, Inc. | $191 |
| ABIOMED | $158 |
| Acera Surgical, Inc. | $147 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-10-15
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20101015000315 | I | Pulmonary Disease | FL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 329 | 244 | $0 |
| 99291 | Critical care, first 30-74 minutes | 320 | 154 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 260 | 159 | $0 |
| 94729 | Test to examine how well the lungs exchange gases | 161 | 160 | $0 |
| 94726 | Test to determine lung volumes using sensors | 157 | 156 | $0 |
Insurance plans in this area (ZIP 33756)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PULMONARY DISEASE | FL | 94060 | Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration | 188 | 185 |
| PULMONARY DISEASE | FL | 94727 | Determination of lung volumes using gas dilution or washout | 27 | 27 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Pulmonary Disease | VA | |
| Pulmonary Disease | FL | |
| Pulmonary Disease | FL | |
| Pulmonary Disease | FL | |
| Pulmonary Disease, Critical Care (Intensivists) | FL | |
| Pulmonary Disease | FL | |
| - | FL | |
| Pulmonary Disease, Critical Care (Intensivists) | FL | |
| Critical Care (Intensivists), Pulmonary Disease | FL | |
| Pulmonary Disease, Critical Care (Intensivists) | FL |
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