Quick answers
- Does Shahab Shayesteh accept Medicare assignment?
- Yes. Medicare's clinician data says Shahab Shayesteh 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 Shahab Shayesteh's NPI number?
- 1083291603. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Shahab Shayesteh works
Medicare's Facility Affiliation Data lists Shahab Shayesteh 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.
- Emerson Hospital -W Concord, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220084
Practice locations
Addresses where Shahab Shayesteh is enrolled with Medicare (CMS data updated October 2, 2026).
- 133 Old Rd To 9 Acre CorConcord, MA 01742 (978) 287‑3020
Group practices
Medicare enrollment lists Shahab Shayesteh as a member of this group (CMS data updated October 2, 2026).
- Emerson Practice Associates, Inc240 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Concord
Clinicians with the same Medicare primary specialty in Concord, MA — not a recommendation.
Other clinicians in Emerson Practice Associates, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083291603 |
| 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