Leonard Lewenstein, M.D.
NPI 1558439687 · Anesthesiology Physician · Santa Monica, CA
Leonard Lewenstein, M.D. is a Anesthesiology Physician provider in Santa Monica, CA (NPI 1558439687).
Provider details
- NPI number
- 1558439687
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C37173 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-11-30
- Last updated
- 2014-03-24
Frequently asked questions
- What is Leonard Lewenstein's NPI number?
- Leonard Lewenstein's National Provider Identifier (NPI) is 1558439687, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Lewenstein's specialty?
- Leonard Lewenstein is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Lewenstein located?
- Leonard Lewenstein's practice location on file with NPPES is 1250 16th St, Santa Monica, CA 90404-1249.
- What is Leonard Lewenstein's phone number?
- The practice phone number listed in the NPPES registry for Leonard Lewenstein is (310) 319-4000.
- Is Leonard Lewenstein's NPI active?
- Yes — Leonard Lewenstein's NPI (1558439687) is active in the NPPES registry as of the last update on 2014-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.