Quick answers
- Where does Robert C. Grayson see patients?
- Medicare's clinician data lists 3 practice locations, including Phoenix, AZ, Gilbert, AZ and Tempe, AZ. Call before your visit to confirm the address.
- What is Robert C. Grayson's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Robert C. Grayson accept Medicare assignment?
- Yes. Medicare's clinician data says Robert C. Grayson 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 Robert C. Grayson?
- (480) 785-2100, as listed in official Medicare / NPI Registry data.
- What is Robert C. Grayson's NPI number?
- 1649234279. 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 Robert C. Grayson is enrolled with Medicare (CMS data updated 2026-10-02).
- 16611 S 40th St, Suite 180Phoenix, AZ 85048 (480) 785‑2100
- 2550 E Guadalupe Rd, Suite 109Gilbert, AZ 85234 (480) 505‑4475
- 6301 S McClintock Dr, Suite 215Tempe, AZ 85283 (480) 820‑6657
Group practices
Medicare enrollment lists Robert C. Grayson as a member of this group (CMS data updated 2026-10-02).
- Southwest Contemporary Women's Care PC22 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649234279 |
| 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