Quick answers
- Where does Donald Gratton Downs see patients?
- Medicare's clinician data lists 1 practice location in Porter Ranch, CA. Call before your visit to confirm the address.
- What is Donald Gratton Downs's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Donald Gratton Downs accept Medicare assignment?
- Yes. Medicare's clinician data says Donald Gratton Downs 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 Donald Gratton Downs?
- (818) 403-2400, as listed in official Medicare / NPI Registry data.
- What is Donald Gratton Downs's NPI number?
- 1568451979. 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 Donald Gratton Downs is enrolled with Medicare (CMS data updated 2026-10-02).
- 19950 Rinaldi St, Suite 103Porter Ranch, CA 91326 (818) 403‑2400
Group practices
Medicare enrollment lists Donald Gratton Downs as a member of this group (CMS data updated 2026-10-02).
- Providence Facey Medical Foundation385 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Porter Ranch
Clinicians with the same Medicare primary specialty in Porter Ranch, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Diego School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568451979 |
| 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