Quick answers
- Which hospitals does Grant Decastillia work at?
- Medicare's official clinician data lists Grant Decastillia at 4 hospitals: Bon Secours Maryview Medical Center, Sentara Leigh Hospital, Sentara Norfolk General Hospital and Sentara Virginia Beach General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Grant Decastillia see patients?
- Medicare's clinician data lists 1 practice location in Norfolk, VA. Call before your visit to confirm the address.
- What is Grant Decastillia's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Grant Decastillia accept Medicare assignment?
- Yes. Medicare's clinician data says Grant Decastillia 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 Grant Decastillia?
- (757) 622-6520, as listed in official Medicare / NPI Registry data.
- What is Grant Decastillia's NPI number?
- 1437047156. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Grant Decastillia works
Medicare's Facility Affiliation Data lists Grant Decastillia at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bon Secours Maryview Medical CenterPortsmouth, VA · Acute Care Hospital · CCN 490017
- Sentara Leigh HospitalNorfolk, VA · Acute Care Hospital · CCN 490046
- Sentara Norfolk General HospitalNorfolk, VA · Acute Care Hospital · CCN 490007
- Sentara Virginia Beach General HospitalVirginia Beach, VA · Acute Care Hospital · CCN 490057
Practice locations
Addresses where Grant Decastillia is enrolled with Medicare (CMS data updated 2026-10-02).
- 425 W 20th St, Suite 1Norfolk, VA 23517 (757) 622‑6520
Group practices
Medicare enrollment lists Grant Decastillia as a member of this group (CMS data updated 2026-10-02).
- Family Physicians of Tidewater PLLC4 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Norfolk
Clinicians with the same Medicare primary specialty in Norfolk, VA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2025 |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437047156 |
| 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