Quick answers
- Which hospitals does Anna N. Ost work at?
- Medicare's official clinician data lists Anna N. Ost at 3 hospitals: Beth Israel Deaconess Medical Center, Lahey Hospital & Medical Center, Burlington and Mount Auburn Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Anna N. Ost see patients?
- Medicare's clinician data lists 2 practice locations, including Lexington, MA and Cambridge, MA. Call before your visit to confirm the address.
- What is Anna N. Ost's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Anna N. Ost accept Medicare assignment?
- Yes. Medicare's clinician data says Anna N. Ost 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 Anna N. Ost offer telehealth?
- Medicare's clinician data says Anna N. Ost offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Anna N. Ost?
- (781) 862-7500, as listed in official Medicare / NPI Registry data.
- What is Anna N. Ost's NPI number?
- 1649689878. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Anna N. Ost works
Medicare's Facility Affiliation Data lists Anna N. Ost at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · CCN 220086
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · CCN 220171
- Mount Auburn HospitalCambridge, MA · Acute Care Hospital · CCN 220002
Practice locations
Addresses where Anna N. Ost is enrolled with Medicare (CMS data updated 2026-10-02).
- 57 Bedford St, Suite 130Lexington, MA 02420 (781) 862‑7500
- 725 Concord Ave, Suite 6100Cambridge, MA 02138 (617) 864‑8822
Group practices
Medicare enrollment lists Anna N. Ost as a member of this group (CMS data updated 2026-10-02).
- Mount Auburn Professional Services Inc231 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lexington
Clinicians with the same Medicare primary specialty in Lexington, MA — not a recommendation.
Clinician information
| Graduation year | 2014 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649689878 |
| 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