Leonard Japko, MD
NPI 1851397392 · Anatomic Pathology & Clinical Pathology Physician · Newark, DE
Leonard Japko, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Newark, DE (NPI 1851397392).
Provider details
- NPI number
- 1851397392
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C10003770 (DE)
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
- 2005-06-21
- Last updated
- 2007-07-09
Frequently asked questions
- What is Leonard Japko's NPI number?
- Leonard Japko's National Provider Identifier (NPI) is 1851397392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Japko's specialty?
- Leonard Japko is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Japko located?
- Leonard Japko's practice location on file with NPPES is 4755 Ogletown Stanton Road, Newark, DE 19718-0001.
- What is Leonard Japko's phone number?
- The practice phone number listed in the NPPES registry for Leonard Japko is (302) 454-9830.
- Is Leonard Japko's NPI active?
- Yes — Leonard Japko's NPI (1851397392) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.