Quick answers
- Does Karen K. Tang accept Medicare assignment?
- Yes. Medicare's clinician data says Karen K. Tang 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 K. Tang's NPI number?
- 1992733786. 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 K. Tang is enrolled with Medicare (CMS data updated October 2, 2026).
- 3510 Martin Luther King Jr BlvdLynwood, CA 90262 (310) 638‑9391
- 7957 Painter Ave, Suite 203Whittier, CA 90602 (562) 464‑0950
Group practices
Medicare enrollment lists Karen K. Tang as a member of this group (CMS data updated October 2, 2026).
- H Shammas MD Inc7 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in H Shammas MD Inc
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 | 2005 (21 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992733786 |
| 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