Quick answers
- Which hospitals does Spencer Holover work at?
- Medicare's official clinician data lists Spencer Holover at 1 hospital: Mercy Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Spencer Holover see patients?
- Medicare's clinician data lists 5 practice locations, including Rockville Center, NY, Hewlett, NY and Roslyn Heights, NY. Call before your visit to confirm the address.
- What is Spencer Holover's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Spencer Holover accept Medicare assignment?
- Yes. Medicare's clinician data says Spencer Holover 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 Spencer Holover offer telehealth?
- Medicare's clinician data says Spencer Holover offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Spencer Holover?
- (516) 705-3428, as listed in official Medicare / NPI Registry data.
- What is Spencer Holover's NPI number?
- 1952346157. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Spencer Holover works
Medicare's Facility Affiliation Data lists Spencer Holover at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Medical CenterRockville Centre, NY · Acute Care Hospital · CCN 330259
Practice locations
Addresses where Spencer Holover is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 N Village AveRockville Center, NY 11570 (516) 705‑3428
- 1200 W Broadway, Suite 9Hewlett, NY 11557 (516) 616‑5500
- 125 Mineola Ave, Suite 200Roslyn Heights, NY 11577 (516) 616‑5500
- 140 Sherman St, Fl 2Fairfield, CT 06824 (516) 616‑5500
- 2001 W Main St, Suite 150Stamford, CT 06902 (516) 616‑5500
Group practices
Medicare enrollment lists Spencer Holover as a member of these groups (CMS data updated 2026-10-02).
- Mercy Medical Center83 clinicians in the group
- New York Bariatric Surgery Group PLLC41 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Rockville Center
Clinicians with the same Medicare primary specialty in Rockville Center, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1952346157 |
| 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