Quick answers
- Does Sean F. Martin accept Medicare assignment?
- Yes. Medicare's clinician data says Sean F. Martin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sean F. Martin see?
- In 2024, CMS data shows 30 Original Medicare patients and 133 services for Sean F. Martin. This counts Original Medicare only and measures volume, not quality.
- What is Sean F. Martin's NPI number?
- 1134352321. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sean F. Martin, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 30 |
|---|---|
| Services billed to Medicare | 133 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 65 |
Most frequent services
- Psychiatric diagnostic evaluation (90791)24 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Depression75%
- Anxiety75%
- High blood pressure73%
- Arthritis53%
Practice locations
Addresses where Sean F. Martin is enrolled with Medicare (CMS data updated October 2, 2026).
- 169 Putnam Hall, South CampusStony Brook, NY 11794 (631) 632‑8850
Group practices
Medicare enrollment lists Sean F. Martin as a member of this group (CMS data updated October 2, 2026).
- Stony Brook Psychiatric Associates University Faculty Practice Corpor104 clinicians in the group
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Stony Brook
Clinicians with the same Medicare primary specialty in Stony Brook, NY — not a recommendation.
Other clinicians in Stony Brook Psychiatric Associates University Faculty Practice Corpor
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1134352321 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians