Quick answers
- Where does Marc D. Dea see patients?
- Medicare's clinician data lists 1 practice location in Walnut Creek, CA. Call before your visit to confirm the address.
- What is Marc D. Dea's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Marc D. Dea accept Medicare assignment?
- Yes. Medicare's clinician data says Marc D. Dea 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 Marc D. Dea?
- (925) 933-1344, as listed in official Medicare / NPI Registry data.
- What is Marc D. Dea's NPI number?
- 1174592646. 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 Marc D. Dea is enrolled with Medicare (CMS data updated 2026-10-02).
- 1811 Ygnacio Valley RdWalnut Creek, CA 94598 (925) 933‑1344
Group practices
Medicare enrollment lists Marc D. Dea as a member of this group (CMS data updated 2026-10-02).
- For Your Eyes Only Ophthalmic Medical Corp4 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174592646 |
| 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