Quick answers
- Where does Ryan Marr see patients?
- Medicare's clinician data lists 4 practice locations, including National City, CA, Alpine, CA and Chula Vista, CA. Call before your visit to confirm the address.
- What is Ryan Marr's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Ryan Marr accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan Marr 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 Ryan Marr?
- (619) 425-7755, as listed in official Medicare / NPI Registry data.
- What is Ryan Marr's NPI number?
- 1235857525. 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 Ryan Marr is enrolled with Medicare (CMS data updated 2026-10-02).
- 1520 E Plaza BlvdNational City, CA 91950 (619) 425‑7755
- 1620 Alpine BlvdAlpine, CA 91901 (619) 662‑4100
- 1620 Alpine Blvd, Suite 110Alpine, CA 91901 (619) 662‑4100
- 835 3rd Ave, Suite AChula Vista, CA 91911
Group practices
Medicare enrollment lists Ryan Marr as a member of these groups (CMS data updated 2026-10-02).
- Centro de Salud de la Comunidad de San Ysidro, Inc.297 clinicians in the group
- California Retina Associates, LP22 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in National City
Clinicians with the same Medicare primary specialty in National City, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235857525 |
| 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