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

Tammy Vien, RN

Individual provider Registered Nurse · NPI 1285234195

Tammy Vien, RN is a Nurse Practitioner in Oakland, California. Qualified in 2025, 1 year ago. Practices with Asian Health Services, a 91-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
1
Licensed in
CA
In the registry since
2020
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

818 Webster St
Oakland, CA 94607-4220
Phone: (510) 986-6800
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence 95230893 (CA)

Record details

NPI number1285234195
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorNo
NPI enumeratedOctober 29, 2020
Last updated in NPPESOctober 29, 2020
Certification dateOctober 29, 2020
Mailing address2139 Pacific Ave Apt B, Alameda, CA 94501-1452

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Asian Health Services — 91 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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