Quick answers
- Where does David Gwynn see patients?
- Medicare's clinician data lists 3 practice locations, including Santa Ana, CA, Mission Viejo, CA and San Clemente, CA. Call before your visit to confirm the address.
- What is David Gwynn's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does David Gwynn accept Medicare assignment?
- Yes. Medicare's clinician data says David Gwynn 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 David Gwynn?
- (714) 557-5777, as listed in official Medicare / NPI Registry data.
- What is David Gwynn's NPI number?
- 1003837766. 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 David Gwynn is enrolled with Medicare (CMS data updated 2026-10-02).
- 2621 S Bristol St, Suite 205Santa Ana, CA 92704 (714) 557‑5777
- 27871 Medical Ctr Rd, Suite 120Mission Viejo, CA 92691 (949) 364‑6688
- 653 Camino De Los Mares, Suite 103San Clemente, CA 92673 (949) 489‑2218
Group practices
Medicare enrollment lists David Gwynn as a member of these groups (CMS data updated 2026-10-02).
- Ramin Tayani MD Inc16 clinicians in the group
- Luis a Chanes M D Inc7 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Santa Ana
Clinicians with the same Medicare primary specialty in Santa Ana, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003837766 |
| 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