Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Sima A. Nekoui, MD

Individual provider Neurology Physician · NPI 1619044567

Sima A. Nekoui, MD is a Neurology in Downey, California. Graduated from University of Texas Medical Branch at Galveston in 1992, 34 years ago. Practices with Shannon Clinic, a 547-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
University of Texas Medical Branch at Galveston
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9449 Imperial Hwy # C281
Downey, CA 90242-2814
Phone: (562) 657-2281
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 102 N Magdalen St, San Angelo, TX 76903-5400 — (325) 747-1511
  • 1180 College Dr, Rock Springs, WY 82901-5863 — (307) 362-4200
  • 1200 College Dr, Rock Springs, WY 82901-5868 — (307) 362-3711

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence A62607 (CA)

Record details

NPI number1619044567
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 29, 2006
Last updated in NPPESJanuary 26, 2026
Certification dateJanuary 26, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL BRANCH AT GALVESTON
Graduated 1992 (34 years in practice)
Group practice Shannon Clinic — 547 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Downey