Quick answers
- Which hospitals does Michael J. Grossman work at?
- Medicare's official clinician data lists Michael J. Grossman at 1 hospital: Merrimack Health Lawrence Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Grossman see patients?
- Medicare's clinician data lists 1 practice location in North Andover, MA. Call before your visit to confirm the address.
- What is Michael J. Grossman's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Michael J. Grossman accept Medicare assignment?
- Medicare's clinician data says Michael J. Grossman may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Michael J. Grossman?
- (978) 682-2121, as listed in official Medicare / NPI Registry data.
- What is Michael J. Grossman's NPI number?
- 1831188218. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Grossman works
Medicare's Facility Affiliation Data lists Michael J. Grossman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · CCN 220010
Practice locations
Addresses where Michael J. Grossman is enrolled with Medicare (CMS data updated 2026-10-02).
- 565 Turnpike StNorth Andover, MA 01845 (978) 682‑2121
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1831188218 |
| 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