Quick answers
- Which hospitals does Lael Greenstein work at?
- Medicare's official clinician data lists Lael Greenstein at 4 hospitals: Beth Israel Deaconess Hospital - Milton, Beth Israel Deaconess Hospital - Needham, Beth Israel Deaconess Medical Center and South Shore Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lael Greenstein see patients?
- Medicare's clinician data lists 1 practice location in Randolph, MA. Call before your visit to confirm the address.
- What is Lael Greenstein's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Lael Greenstein accept Medicare assignment?
- Yes. Medicare's clinician data says Lael Greenstein accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Lael Greenstein offer telehealth?
- Medicare's clinician data says Lael Greenstein offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Lael Greenstein?
- (781) 986-8039, as listed in official Medicare / NPI Registry data.
- What is Lael Greenstein's NPI number?
- 1164867701. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lael Greenstein works
Medicare's Facility Affiliation Data lists Lael Greenstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beth Israel Deaconess Hospital - MiltonMilton, MA · Acute Care Hospital · CCN 220108
- Beth Israel Deaconess Hospital - NeedhamNeedham, MA · Acute Care Hospital · CCN 220083
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · CCN 220086
- South Shore HospitalSouth Weymouth, MA · Acute Care Hospital · CCN 220100
Practice locations
Addresses where Lael Greenstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 32 S Main St, 100 Beth Israel Deaconess Health Care RandoRandolph, MA 02368 (781) 986‑8039
Group practices
Medicare enrollment lists Lael Greenstein as a member of this group (CMS data updated 2026-10-02).
- Medical Care of Boston Management Corporation292 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1164867701 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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