Quick answers
- Which hospitals does Marc Vanderleeden work at?
- Medicare's official clinician data lists Marc Vanderleeden at 4 hospitals: Baystate Medical Center, Baystate Noble Hospital, Baystate Wing Hospital and Mercy Medical Ctr. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc Vanderleeden see patients?
- Medicare's clinician data lists 1 practice location in Springfield, MA. Call before your visit to confirm the address.
- What is Marc Vanderleeden's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does Marc Vanderleeden accept Medicare assignment?
- Yes. Medicare's clinician data says Marc Vanderleeden 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.
- What is the phone number for Marc Vanderleeden?
- (413) 746-0903, as listed in official Medicare / NPI Registry data.
- What is Marc Vanderleeden's NPI number?
- 1801883194. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc Vanderleeden works
Medicare's Facility Affiliation Data lists Marc Vanderleeden at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · CCN 220077
- Baystate Noble HospitalWestfield, MA · Acute Care Hospital · CCN 220065
- Baystate Wing HospitalPalmer, MA · Acute Care Hospital · CCN 220030
- Mercy Medical CtrSpringfield, MA · Acute Care Hospital · CCN 220066
Practice locations
Addresses where Marc Vanderleeden is enrolled with Medicare (CMS data updated 2026-10-02).
- 2 Medical Ctr Dr, Suite 210Springfield, MA 01107 (413) 746‑0903
Group practices
Medicare enrollment lists Marc Vanderleeden as a member of this group (CMS data updated 2026-10-02).
- Endocrine Associates of Western Mass, P.C.4 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Springfield
Clinicians with the same Medicare primary specialty in Springfield, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801883194 |
| 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