Bayer Reference Testing Laboratory
NPI 1235114067 · Clinical Medical Laboratory · Berkeley, CA
Bayer Reference Testing Laboratory is a Clinical Medical Laboratory organization in Berkeley, CA (NPI 1235114067).
Provider details
- NPI number
- 1235114067
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- William Joseph, Brtl Medical Director(510) 705-5900
- License
- CLF10781 (CA)
Specialties & taxonomies
Laboratories
Laboratories
Laboratories
Laboratories
Laboratories
Laboratories
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2005-12-14
- Last updated
- 2020-08-22
Frequently asked questions
- What is Bayer Reference Testing Laboratory's NPI number?
- Bayer Reference Testing Laboratory's National Provider Identifier (NPI) is 1235114067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Bayer Reference Testing Laboratory?
- Bayer Reference Testing Laboratory is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Bayer Reference Testing Laboratory located?
- Bayer Reference Testing Laboratory's practice location on file with NPPES is 725 Potter St, Berkeley, CA 94710-2722.
- What is Bayer Reference Testing Laboratory's phone number?
- The practice phone number listed in the NPPES registry for Bayer Reference Testing Laboratory is (510) 705-5900.
- Who is the authorized official for Bayer Reference Testing Laboratory?
- The authorized official listed on Bayer Reference Testing Laboratory's NPPES record is William Joseph, Brtl Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Bayer Reference Testing Laboratory's NPI active?
- Yes — Bayer Reference Testing Laboratory's NPI (1235114067) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.