Quick answers
- Where does Daniel B. Harker see patients?
- Medicare's clinician data lists 3 practice locations, including Santa Ana, CA, La Palma, CA and Anaheim, CA. Call before your visit to confirm the address.
- What is Daniel B. Harker's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Daniel B. Harker accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel B. Harker 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 Daniel B. Harker?
- (888) 988-2800, as listed in official Medicare / NPI Registry data.
- What is Daniel B. Harker's NPI number?
- 1841552940. 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 Daniel B. Harker is enrolled with Medicare (CMS data updated 2026-10-02).
- 3401 S Harbor BlvdSanta Ana, CA 92704 (888) 988‑2800
- 5 Centerpointe DrLa Palma, CA 90623 (888) 988‑2800
- 5475 E La Palma AveAnaheim, CA 92807 (714) 279‑6088
Group practices
Medicare enrollment lists Daniel B. Harker as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Santa Ana
Clinicians with the same Medicare primary specialty in Santa Ana, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Southern California College Of Optometry |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841552940 |
| 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