Quick answers
- Does Gretchen Landwehr accept Medicare assignment?
- Yes. Medicare's clinician data says Gretchen Landwehr accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Gretchen Landwehr's NPI number?
- 1427114628. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gretchen Landwehr works
Medicare's Facility Affiliation Data lists Gretchen Landwehr at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Tufts Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220116
Practice locations
Addresses where Gretchen Landwehr is enrolled with Medicare (CMS data updated October 2, 2026).
- 15 Rockdale St, Suite 201Braintree, MA 02184 (781) 843‑2229
- 800 Washington StBoston, MA 02111 (617) 636‑5000
Group practices
Medicare enrollment lists Gretchen Landwehr as a member of this group (CMS data updated October 2, 2026).
- Pratt Ob/Gyn Associates, Inc61 clinicians in the group
Specialties
Find other clinicians: Certified Nurse Midwife (CNM), Massachusetts →
Other nurse midwifes in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Pratt Ob/Gyn Associates, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2002 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427114628 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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