OrganizationActive
Theranos, Inc
NPI 1548546401 · Clinical Medical Laboratory · Palo Alto, CA
Theranos, Inc is a Clinical Medical Laboratory organization in Palo Alto, CA (NPI 1548546401).
Provider details
- NPI number
- 1548546401
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- Elizabeth Holmes, Chief Executive Officer(650) 838-9292
Specialties & taxonomies
Laboratories
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
1601 S California Ave
Palo Alto, CA 94304-1111
Phone: (650) 838-9292
Fax: (650) 838-9165
Street-level locationGet directions
Mailing address
1601 S California Ave
Palo Alto, CA 94304-1111
Registry dates
- Enumerated
- 2011-10-24
- Last updated
- 2012-09-11
Frequently asked questions
- What is Theranos, Inc's NPI number?
- Theranos, Inc's National Provider Identifier (NPI) is 1548546401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Theranos, Inc?
- Theranos, Inc is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Theranos, Inc located?
- Theranos, Inc's practice location on file with NPPES is 1601 S California Ave, Palo Alto, CA 94304-1111.
- What is Theranos, Inc's phone number?
- The practice phone number listed in the NPPES registry for Theranos, Inc is (650) 838-9292.
- Who is the authorized official for Theranos, Inc?
- The authorized official listed on Theranos, Inc's NPPES record is Elizabeth Holmes, Chief Executive Officer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Theranos, Inc's NPI active?
- Yes — Theranos, Inc's NPI (1548546401) is active in the NPPES registry as of the last update on 2012-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.