Quick answers
- Which hospitals does Grace W. Pien work at?
- Medicare's official clinician data lists Grace W. Pien at 1 hospital: Hospital of University of Pennsylvania. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Grace W. Pien see patients?
- Medicare's clinician data lists 2 practice locations, including Philadelphia, PA. Call before your visit to confirm the address.
- What is Grace W. Pien's specialty?
- Medicare lists Sleep Medicine as the primary specialty, and also Critical Care (Intensivists) and Pulmonary Disease.
- Does Grace W. Pien accept Medicare assignment?
- Yes. Medicare's clinician data says Grace W. Pien 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 Grace W. Pien?
- (215) 662-7772, as listed in official Medicare / NPI Registry data.
- What is Grace W. Pien's NPI number?
- 1427077650. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Grace W. Pien works
Medicare's Facility Affiliation Data lists Grace W. Pien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
Practice locations
Addresses where Grace W. Pien is enrolled with Medicare (CMS data updated 2026-10-02).
- 3400 Spruce StPhiladelphia, PA 19104 (215) 662‑7772
- 3624 Market St, Fl 2Philadelphia, PA 19104 (215) 662‑7772
Group practices
Medicare enrollment lists Grace W. Pien as a member of this group (CMS data updated 2026-10-02).
- University of Penn - Medical Group3,505 clinicians in the group
Specialties
- Sleep Medicineprimary
- Critical Care (Intensivists)also
- Pulmonary Diseasealso
Other sleep medicine doctors in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1994 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427077650 |
| 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