Quick answers
- Which hospitals does Grayson Halladay work at?
- Medicare's official clinician data lists Grayson Halladay at 2 hospitals: Banner Estrella Medical Center and The Core Institute Specialty Hosp. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Grayson Halladay see patients?
- Medicare's clinician data lists 1 practice location in Sun City, AZ. Call before your visit to confirm the address.
- What is Grayson Halladay's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Grayson Halladay accept Medicare assignment?
- Yes. Medicare's clinician data says Grayson Halladay 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 Grayson Halladay offer telehealth?
- Medicare's clinician data says Grayson Halladay offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Grayson Halladay?
- (866) 974-2673, as listed in official Medicare / NPI Registry data.
- What is Grayson Halladay's NPI number?
- 1225589021. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Grayson Halladay works
Medicare's Facility Affiliation Data lists Grayson Halladay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner Estrella Medical CenterPhoenix, AZ · Acute Care Hospital · CCN 030115
- The Core Institute Specialty HospPhoenix, AZ · Acute Care Hospital · CCN 030108
Practice locations
Addresses where Grayson Halladay is enrolled with Medicare (CMS data updated 2026-10-02).
- 10494 W Thunderbird BlvdSun City, AZ 85351 (866) 974‑2673
Group practices
Medicare enrollment lists Grayson Halladay as a member of this group (CMS data updated 2026-10-02).
- Center for Orthopedic Research and Education LLC250 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Sun City
Clinicians with the same Medicare primary specialty in Sun City, AZ — not a recommendation.
Clinician information
| Graduation year | 2016 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1225589021 |
| 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