Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
ALEXANDRA SIEGEL
DeactivatedALEXANDRA SIEGEL is a Registered Nurse healthcare provider located in CASTRO VALLEY, California. NPI 1356978811 is deactivated in the NPPES registry. Verify at CMS.
Registered Nurse · CASTRO VALLEY, CA
This NPI has been deactivated.
The record was deactivated on January 28, 2026.
Deactivated NPIs are no longer valid for billing or credentialing. The provider may have retired, changed practice status, or had their NPI administratively deactivated.
Verify current licensure status with the NPPES NPI Registry or the relevant state medical board before relying on this record.
Registration Details
- NPI Number
- 1356978811
- Provider Type
- Individual
- Gender
- Female
- NPI Issued
- Mar 25, 2020 (5.8465753424658 yrs)
- Last Updated
- Feb 9, 2026
- Deactivated
- Jan 28, 2026
- License
-
95215402 (CA)
Practice Information
- Address
-
3787 BROOKDALE BLVDCASTRO VALLEY, CA, 945462013Browse CA providers · Browse ZIP 94546
- Phone
- 5104619542
- Primary Specialty
-
Registered Nurse
163W00000X
Other Registered Nurse Providers in CASTRO VALLEY, CA
| Name | Credential | NPI |
|---|---|---|
| AMY M SHELL | NP | 1982714242 |
| JOANN DUMAS | FNP | 1902987126 |
| MEI LUNG LIANG LAHEY | LAC OMD QME | 1952457608 |
| ROSE W ZHANG | NP | 1609268382 |
| NEJAT MOHAMMED | — | 1528453073 |
| MRS. MARY KATHLEEN RYKEN | RN | 1023581766 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.