Quick answers
- Which hospitals does Sarah D. Haessler work at?
- Medicare's official clinician data lists Sarah D. Haessler at 1 hospital: Baystate Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sarah D. Haessler see patients?
- Medicare's clinician data lists 2 practice locations, including Springfield, MA. Call before your visit to confirm the address.
- What is Sarah D. Haessler's specialty?
- Medicare lists Infectious Disease as the primary specialty.
- Does Sarah D. Haessler accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah D. Haessler 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 Sarah D. Haessler's NPI number?
- 1356446140. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sarah D. Haessler works
Medicare's Facility Affiliation Data lists Sarah D. Haessler 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
Practice locations
Addresses where Sarah D. Haessler is enrolled with Medicare (CMS data updated 2026-10-02).
- 280 Chestnut St, Suite 2Springfield, MA 01199
- 759 Chestnut StSpringfield, MA 01199
Group practices
Medicare enrollment lists Sarah D. Haessler as a member of this group (CMS data updated 2026-10-02).
- Baystate Medical Practices Inc1,369 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in Springfield
Clinicians with the same Medicare primary specialty in Springfield, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356446140 |
| 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