John A Masson, M.D.
Critical Care (Intensivists) · Pulmonary Disease (CMS) · Clearwater, FL
At a glance
430 Morton Plant St, Clearwater, FL 33756-3398
NPPES record updated May 19, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
430 Morton Plant St Suite 405Clearwater, FL 33756-3398
Additional reported practice locations
430 Morton Plant St Ste 210Clearwater, FL 337563396
Phone: 7274430611
Fax: 7274615493
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1996
- CMS specialties
- Critical Care (Intensivists) · Pulmonary Disease
Practice groups
Reported hospital affiliations
- Adventhealth North Pinellas Tarpon Springs, FL
- Mease Countryside Hospital Safety Harbor, FL
- Mease Dunedin Hospital Dunedin, FL
- Morton Plant Hospital Clearwater, FL
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $1,089.74 |
| Education | $88.99 |
Reporting companies
| Company | Amount |
|---|---|
| ASTRAZENECA PHARMACEUTICALS LP | $177.23 |
| GLAXOSMITHKLINE, LLC. | $156.83 |
| BOEHRINGER INGELHEIM PHARMACEUTICALS, INC. | $137.36 |
| MERCK SHARP & DOHME LLC | $134.89 |
| ABBVIE INC. | $114.91 |
| ACTELION PHARMACEUTICALS US, INC. | $113.58 |
| UNITED THERAPEUTICS CORPORATION | $104.08 |
| GRIFOLS USA, LLC | $44.42 |
| Other reporting companies | $195.43 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Critical Care (Intensivists) · Pulmonary Disease (CMS)
- Taxonomy code
- 207RP1001X
- Enumeration date
- Nov 10, 2005
- Record updated
- May 19, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RC0200X
License reported: ME84169 FL
207RP1001X · Primary
License reported: ME84169 FL
207RS0012X
License reported: ME84169 FL
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
430 Morton Plant StSuite 405
Clearwater, FL 33756-3398
- Phone
- (727) 443-0611
- Fax
- (727) 461-5493
Mailing address
430 MORTON PLANT ST STE 405CLEARWATER, FL 337563394
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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