Quick answers
- Which hospitals does John Yeiser work at?
- Medicare's official clinician data lists John Yeiser at 3 hospitals: Bryn Mawr Hospital, Main Line Hospital Lankenau and Riddle Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Yeiser see patients?
- Medicare's clinician data lists 1 practice location in Wynnewood, PA. Call before your visit to confirm the address.
- What is John Yeiser's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does John Yeiser accept Medicare assignment?
- Yes. Medicare's clinician data says John Yeiser 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 John Yeiser offer telehealth?
- Medicare's clinician data says John Yeiser offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John Yeiser?
- (610) 658-5266, as listed in official Medicare / NPI Registry data.
- What is John Yeiser's NPI number?
- 1831726017. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Yeiser works
Medicare's Facility Affiliation Data lists John Yeiser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · CCN 390139
- Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · CCN 390195
- Riddle Memorial HospitalMedia, PA · Acute Care Hospital · CCN 390222
Practice locations
Addresses where John Yeiser is enrolled with Medicare (CMS data updated 2026-10-02).
- 306 E Lancaster Ave, Suite 400Wynnewood, PA 19096 (610) 658‑5266
Group practices
Medicare enrollment lists John Yeiser as a member of this group (CMS data updated 2026-10-02).
- Main Line Healthcare1,184 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Wynnewood
Clinicians with the same Medicare primary specialty in Wynnewood, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1831726017 |
| 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