Quick answers
- Which hospitals does Andrew G. Vayonis work at?
- Medicare's official clinician data lists Andrew G. Vayonis at 1 hospital: UPMC St Margaret. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Andrew G. Vayonis see patients?
- Medicare's clinician data lists 1 practice location in Pittsburgh, PA. Call before your visit to confirm the address.
- What is Andrew G. Vayonis's specialty?
- Medicare lists Allergy/Immunology as the primary specialty, and also Internal Medicine.
- Does Andrew G. Vayonis accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew G. Vayonis 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 Andrew G. Vayonis?
- (412) 828-3800, as listed in official Medicare / NPI Registry data.
- What is Andrew G. Vayonis's NPI number?
- 1194720425. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Andrew G. Vayonis works
Medicare's Facility Affiliation Data lists Andrew G. Vayonis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC St MargaretPittsburgh, PA · Acute Care Hospital · CCN 390102
Practice locations
Addresses where Andrew G. Vayonis is enrolled with Medicare (CMS data updated 2026-10-02).
- 2585 Freeport Rd, Suite 210Pittsburgh, PA 15238 (412) 828‑3800
Group practices
Medicare enrollment lists Andrew G. Vayonis as a member of this group (CMS data updated 2026-10-02).
- Allergy and Asthma Associates of Pittsburgh2 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Internal Medicinealso
Other allergist and immunologists in Pittsburgh
Clinicians with the same Medicare primary specialty in Pittsburgh, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Pennsylvania State University College Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194720425 |
| 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