Quick answers
- Does Seyed Mohammad Seyedsaadat accept Medicare assignment?
- Yes. Medicare's clinician data says Seyed Mohammad Seyedsaadat 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.
- What is Seyed Mohammad Seyedsaadat's NPI number?
- 1184185191. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seyed Mohammad Seyedsaadat works
Medicare's Facility Affiliation Data lists Seyed Mohammad Seyedsaadat at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
- Martha's Vineyard Hospital IncOak Bluffs, MA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 221300
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071
- Newton-Wellesley HospitalNewton, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220101
- North Shore Medical Center -Salem, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220035
Practice locations
Addresses where Seyed Mohammad Seyedsaadat is enrolled with Medicare (CMS data updated October 2, 2026).
- 151 Everett AveChelsea, MA 02150 (617) 884‑8300
- 20 Patriot PlFoxborough, MA 02035 (866) 378‑9164
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
- 789 Central AveDover, NH 03820 (603) 742‑5252
- 800 Washington StBoston, MA 02111 (617) 636‑5000
Group practices
Medicare enrollment lists Seyed Mohammad Seyedsaadat as a member of these groups (CMS data updated October 2, 2026).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
- Pratt Radiology Associates Inc54 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Chelsea
Clinicians with the same Medicare primary specialty in Chelsea, MA — not a recommendation.
Other clinicians in Massachusetts General Physicians Organization Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184185191 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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