Quick answers
- Where does Eric B. Day see patients?
- Medicare's clinician data lists 2 practice locations, including Sun City West, AZ and Sun City, AZ. Call before your visit to confirm the address.
- What is Eric B. Day's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Eric B. Day accept Medicare assignment?
- Yes. Medicare's clinician data says Eric B. Day 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 Eric B. Day?
- (623) 975-4244, as listed in official Medicare / NPI Registry data.
- What is Eric B. Day's NPI number?
- 1437166840. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Eric B. Day is enrolled with Medicare (CMS data updated 2026-10-02).
- 14506 W Granite Valley Dr, Suite 110Sun City West, AZ 85375 (623) 975‑4244
- 14666 N Del Webb BlvdSun City, AZ 85351 (623) 933‑3107
Group practices
Medicare enrollment lists Eric B. Day as a member of this group (CMS data updated 2026-10-02).
- Updegraff Clinic for Allergy and Dermatology PC3 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Sun City West
Clinicians with the same Medicare primary specialty in Sun City West, AZ — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437166840 |
| 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
- 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