Leonard Oestreicher, MD
NPI 1033212022 · Family Medicine Physician · Merced, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Oestreicher, MD is a Family Medicine Physician provider in Merced, CA (NPI 1033212022).
Provider details
- NPI number
- 1033212022
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G29861 (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
- 2006-09-06
- Last updated
- 2020-12-11
- Certified
- 2020-12-11
Frequently asked questions
- What is Leonard Oestreicher's NPI number?
- Leonard Oestreicher's National Provider Identifier (NPI) is 1033212022, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Oestreicher's specialty?
- Leonard Oestreicher is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Oestreicher located?
- Leonard Oestreicher's practice location on file with NPPES is 374 W Olive Avenue, Merced, CA 95348.
- What is Leonard Oestreicher's phone number?
- The practice phone number listed in the NPPES registry for Leonard Oestreicher is (209) 383-3076.
- Does Leonard Oestreicher accept Medicare?
- Leonard Oestreicher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Oestreicher's NPI active?
- Yes — Leonard Oestreicher's NPI (1033212022) is active in the NPPES registry as of the last update on 2020-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.