Quick answers
- Does Karen Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Karen Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Karen Nguyen's NPI number?
- 1598657041. 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 Karen Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 Minor Hall, Suite 384aBerkeley, CA 94720 (510) 642‑2020
Group practices
Medicare enrollment lists Karen Nguyen as a member of this group (CMS data updated October 2, 2026).
- Regents of the University of California at Berkeley58 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Berkeley
Clinicians with the same Medicare primary specialty in Berkeley, CA — not a recommendation.
Other clinicians in Regents of the University of California at Berkeley
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Southern California College Of Optometry |
| Graduation year | 2025 (1 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598657041 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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