Quick answers
- Which hospitals does John C. Masek work at?
- Medicare's official clinician data lists John C. Masek at 1 hospital: Chester County Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Masek see patients?
- Medicare's clinician data lists 1 practice location in West Chester, PA. Call before your visit to confirm the address.
- What is John C. Masek's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does John C. Masek accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Masek 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 the phone number for John C. Masek?
- (610) 431-5000, as listed in official Medicare / NPI Registry data.
- What is John C. Masek's NPI number?
- 1740206705. 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 C. Masek works
Medicare's Facility Affiliation Data lists John C. Masek at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Chester County HospitalWest Chester, PA · Acute Care Hospital · CCN 390179
Practice locations
Addresses where John C. Masek is enrolled with Medicare (CMS data updated 2026-10-02).
- 701 E Marshall StWest Chester, PA 19380 (610) 431‑5000
Group practices
Medicare enrollment lists John C. Masek as a member of this group (CMS data updated 2026-10-02).
- Clinical Care Associates of the University of Pennsylvania Health.598 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Pennsylvania →
Other nurse anesthetists in West Chester
Clinicians with the same Medicare primary specialty in West Chester, PA — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Medical school | Temple University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740206705 |
| 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