Quick answers
- Where does Michelle Wallenstein see patients?
- Medicare's clinician data lists 2 practice locations, including Greenwich, CT and Yonkers, NY. Call before your visit to confirm the address.
- What is Michelle Wallenstein's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Michelle Wallenstein accept Medicare assignment?
- Yes. Medicare's clinician data says Michelle Wallenstein 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 Michelle Wallenstein?
- (203) 863-3000, as listed in official Medicare / NPI Registry data.
- What is Michelle Wallenstein's NPI number?
- 1275790883. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Michelle Wallenstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 5 Perryridge RdGreenwich, CT 06830 (203) 863‑3000
- 73 Market StYonkers, NY 10710 (914) 682‑0700
Group practices
Medicare enrollment lists Michelle Wallenstein as a member of this group (CMS data updated 2026-10-02).
- Westchester Medical Group, P.C415 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Greenwich
Clinicians with the same Medicare primary specialty in Greenwich, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers R W Johnson Medical School (cam/new Bruns/pisc) |
| Graduation year | 2007 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275790883 |
| 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
- 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