OrganizationActive
Michael Arnstein
NPI 1396980983 · Specialist · Torrance, CA
Michael Arnstein is a Specialist organization in Torrance, CA (NPI 1396980983).
Provider details
- NPI number
- 1396980983
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Valerie Diaz, Office Manager(310) 530-4200
- License
- G80314 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
22930 Crenshaw Blvd Ste D
Torrance, CA 90505-3048
Phone: (310) 530-4200
Fax: (310) 530-1562
Street-level locationGet directions
Mailing address
22930 Crenshaw Blvd Ste D
Torrance, CA 90505-3048
Registry dates
- Enumerated
- 2008-12-10
- Last updated
- 2008-12-10
Frequently asked questions
- What is Michael Arnstein's NPI number?
- Michael Arnstein's National Provider Identifier (NPI) is 1396980983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Michael Arnstein?
- Michael Arnstein is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Michael Arnstein located?
- Michael Arnstein's practice location on file with NPPES is 22930 Crenshaw Blvd Ste D, Torrance, CA 90505-3048.
- What is Michael Arnstein's phone number?
- The practice phone number listed in the NPPES registry for Michael Arnstein is (310) 530-4200.
- Who is the authorized official for Michael Arnstein?
- The authorized official listed on Michael Arnstein's NPPES record is Valerie Diaz, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Michael Arnstein's NPI active?
- Yes — Michael Arnstein's NPI (1396980983) is active in the NPPES registry as of the last update on 2008-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.