Leah Osnis
NPI 1437848777 · Anatomic Pathology & Clinical Pathology Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leah Osnis is a Anatomic Pathology & Clinical Pathology Physician provider in Chicago, IL (NPI 1437848777).
Provider details
- NPI number
- 1437848777
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125.081214 (IL)
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
3 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
- 2023-05-03
- Last updated
- 2023-06-25
- Certified
- 2023-06-25
Frequently asked questions
- What is Leah Osnis's NPI number?
- Leah Osnis's National Provider Identifier (NPI) is 1437848777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leah Osnis's specialty?
- Leah Osnis is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Leah Osnis located?
- Leah Osnis's practice location on file with NPPES is 5841 S Maryland Ave # Mc3083, Chicago, IL 60637-1443.
- What is Leah Osnis's phone number?
- The practice phone number listed in the NPPES registry for Leah Osnis is (773) 834-7708.
- Does Leah Osnis accept Medicare?
- Leah Osnis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leah Osnis's NPI active?
- Yes — Leah Osnis's NPI (1437848777) is active in the NPPES registry as of the last update on 2023-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.