Quick answers
- Does Marygail C. Muller accept Medicare assignment?
- Yes. Medicare's clinician data says Marygail C. Muller 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 Marygail C. Muller's NPI number?
- 1992515589. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marygail C. Muller works
Medicare's Facility Affiliation Data lists Marygail C. Muller 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.
- Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390139
- Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390195
- Paoli HospitalPaoli, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390153
- Riddle Memorial HospitalMedia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390222
Practice locations
Addresses where Marygail C. Muller is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 E Lancaster Ave, Suite 256Wynnewood, PA 19096 (610) 325‑3880
- 135 S Bryn Mawr Ave, Suite 100 Mlh Jefferson NeurosurgeryBryn Mawr, PA 19010 (610) 525‑1061
Group practices
Medicare enrollment lists Marygail C. Muller as a member of this group (CMS data updated October 2, 2026).
- Main Line Healthcare1,184 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Wynnewood
Clinicians with the same Medicare primary specialty in Wynnewood, PA — not a recommendation.
Other clinicians in Main Line Healthcare
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992515589 |
| 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