Quick answers
- Which hospitals does Gwen M. Grimsby work at?
- Medicare's official clinician data lists Gwen M. Grimsby at 1 hospital: Phoenix Children's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gwen M. Grimsby see patients?
- Medicare's clinician data lists 2 practice locations, including Phoenix, AZ. Call before your visit to confirm the address.
- What is Gwen M. Grimsby's specialty?
- Medicare lists Pediatric Medicine as the primary specialty.
- Does Gwen M. Grimsby accept Medicare assignment?
- Yes. Medicare's clinician data says Gwen M. Grimsby 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 Gwen M. Grimsby?
- (602) 933-0930, as listed in official Medicare / NPI Registry data.
- What is Gwen M. Grimsby's NPI number?
- 1740448703. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gwen M. Grimsby works
Medicare's Facility Affiliation Data lists Gwen M. Grimsby at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Phoenix Children's HospitalPhoenix, AZ · Children's Hospital · CCN 033302
Practice locations
Addresses where Gwen M. Grimsby is enrolled with Medicare (CMS data updated 2026-10-02).
- 1919 E Thomas RdPhoenix, AZ 85016 (602) 933‑0930
- 1919 E Thomas Rd, Bldg BPhoenix, AZ 85016 (602) 933‑0930
Group practices
Medicare enrollment lists Gwen M. Grimsby as a member of this group (CMS data updated 2026-10-02).
- Phoenix Children's Hospital437 clinicians in the group
Specialties
- Pediatric Medicineprimary
Other pediatricians in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740448703 |
| 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