Quick answers
- Where does Deborah C. Marshall see patients?
- Medicare's clinician data lists 2 practice locations, including New York, NY. Call before your visit to confirm the address.
- What is Deborah C. Marshall's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Deborah C. Marshall accept Medicare assignment?
- Yes. Medicare's clinician data says Deborah C. Marshall 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 Deborah C. Marshall?
- (212) 241-6500, as listed in official Medicare / NPI Registry data.
- What is Deborah C. Marshall's NPI number?
- 1336501220. 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 Deborah C. Marshall is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Gustave L Levy PlNew York, NY 10029 (212) 241‑6500
- 225 E 126th StNew York, NY 10035 (646) 968‑9064
Group practices
Medicare enrollment lists Deborah C. Marshall as a member of these groups (CMS data updated 2026-10-02).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
- The New York Proton Center46 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Diego School Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336501220 |
| 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