William Stiefel, C.M.T, C.R
NPI 1588069967 · Mechanotherapist · Altandena, CA
William Stiefel, C.M.T, C.R is a Mechanotherapist provider in Altandena, CA (NPI 1588069967).
Provider details
- NPI number
- 1588069967
- Entity type
- Individual
- Primary specialty
- MechanotherapistOther Service Providers
- Credential
- C.M.T, C.R
- Sex
- Male
- Sole proprietor
- Yes
- License
- 42355 (CA)
Specialties & taxonomies
Other Service Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
- 2014-10-28
- Last updated
- 2021-03-26
- Certified
- 2021-03-26
Frequently asked questions
- What is William Stiefel's NPI number?
- William Stiefel's National Provider Identifier (NPI) is 1588069967, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Stiefel's specialty?
- William Stiefel is listed in the NPPES registry with a primary specialty of Mechanotherapist (Other Service Providers).
- Where is William Stiefel located?
- William Stiefel's practice location on file with NPPES is 2845 Sterling Place, Altandena, CA 91001.
- What is William Stiefel's phone number?
- The practice phone number listed in the NPPES registry for William Stiefel is (213) 407-3852.
- Is William Stiefel's NPI active?
- Yes — William Stiefel's NPI (1588069967) is active in the NPPES registry as of the last update on 2021-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.