Quick answers
- Where does Caitlin M. Treacy see patients?
- Medicare's clinician data lists 4 practice locations, including New York, NY, Montvale, NJ and West Harrison, NY. Call before your visit to confirm the address.
- What is Caitlin M. Treacy's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Caitlin M. Treacy accept Medicare assignment?
- Yes. Medicare's clinician data says Caitlin M. Treacy 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 Caitlin M. Treacy?
- (212) 639-2000, as listed in official Medicare / NPI Registry data.
- What is Caitlin M. Treacy's NPI number?
- 1114441144. 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 Caitlin M. Treacy is enrolled with Medicare (CMS data updated 2026-10-02).
- 1275 York AveNew York, NY 10065 (212) 639‑2000
- 225 Summit AveMontvale, NJ 07645 (908) 542‑3336
- 500 Westchester AveWest Harrison, NY 10604 (212) 639‑2000
- 530 E 74th StNew York, NY 10021 (212) 639‑2000
Group practices
Medicare enrollment lists Caitlin M. Treacy as a member of these groups (CMS data updated 2026-10-02).
- MSK Bergen255 clinicians in the group
- Memorial Hematology Lymphoma Group216 clinicians in the group
- MSKCC Radiology Group193 clinicians in the group
- MSK Harrison132 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1114441144 |
| 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