Quick answers
- Which hospitals does Greter Guillen work at?
- Medicare's official clinician data lists Greter Guillen at 1 hospital: UPMC Presbyterian Shadyside. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Greter Guillen see patients?
- Medicare's clinician data lists 7 practice locations, including Fort Myers, FL, Pittsburg, PA and Pittsburgh, PA. Call before your visit to confirm the address.
- What is Greter Guillen's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does Greter Guillen accept Medicare assignment?
- Yes. Medicare's clinician data says Greter Guillen 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 Greter Guillen?
- (239) 887-3608, as listed in official Medicare / NPI Registry data.
- What is Greter Guillen's NPI number?
- 1417457615. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Greter Guillen works
Medicare's Facility Affiliation Data lists Greter Guillen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC Presbyterian ShadysidePittsburgh, PA · Acute Care Hospital · CCN 390164
Practice locations
Addresses where Greter Guillen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 13051 University Dr, Suite 102Fort Myers, FL 33907 (239) 887‑3608
- 2 Hot Meal StPittsburg, PA 15203
- 200 Lothrop StPittsburgh, PA 15213
- 3459 5th AvePittsburgh, PA 15213 (412) 648‑6161
- 3459 5th Ave, Fl 7Pittsburgh, PA 15213 (412) 802‑3043
Group practices
Medicare enrollment lists Greter Guillen as a member of these groups (CMS data updated 2026-10-02).
- University of Pittsburgh Physicians4,236 clinicians in the group
- West Florida Anesthesia Associates LLC47 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Florida →
Other nurse anesthetists in Fort Myers
Clinicians with the same Medicare primary specialty in Fort Myers, FL — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417457615 |
| 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