Michael Leidner, MD
NPI 1538124987 · Emergency Medicine Physician · Lancaster, CA
Michael Leidner, MD is a Emergency Medicine Physician provider in Lancaster, CA (NPI 1538124987).
Provider details
- NPI number
- 1538124987
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G24286 (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
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
- 2006-04-19
- Last updated
- 2008-05-15
Frequently asked questions
- What is Michael Leidner's NPI number?
- Michael Leidner's National Provider Identifier (NPI) is 1538124987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Leidner's specialty?
- Michael Leidner is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Leidner located?
- Michael Leidner's practice location on file with NPPES is 1600 W Avenue J, Lancaster, CA 93534-2814.
- What is Michael Leidner's phone number?
- The practice phone number listed in the NPPES registry for Michael Leidner is (661) 949-5000.
- Is Michael Leidner's NPI active?
- Yes — Michael Leidner's NPI (1538124987) is active in the NPPES registry as of the last update on 2008-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.