Steven Keyser, C.O.
NPI 1639366693 · Orthotist · Downey, CA
Steven Keyser, C.O. is a Orthotist provider in Downey, CA (NPI 1639366693).
Provider details
- NPI number
- 1639366693
- Entity type
- Individual
- Primary specialty
- OrthotistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- C.O.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2007-10-03
- Last updated
- 2013-11-15
Frequently asked questions
- What is Steven Keyser's NPI number?
- Steven Keyser's National Provider Identifier (NPI) is 1639366693, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Keyser's specialty?
- Steven Keyser is listed in the NPPES registry with a primary specialty of Orthotist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Steven Keyser located?
- Steven Keyser's practice location on file with NPPES is 7601 Imperial Hwy, Downey, CA 90242-3456.
- What is Steven Keyser's phone number?
- The practice phone number listed in the NPPES registry for Steven Keyser is (562) 401-8115.
- Is Steven Keyser's NPI active?
- Yes — Steven Keyser's NPI (1639366693) is active in the NPPES registry as of the last update on 2013-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.