Leah Gruen, MD
NPI 1891554044 · Anatomic Pathology & Clinical Pathology Physician · Maywood, IL
Enrolled with Medicare as Order and Referring Only - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leah Gruen, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Maywood, IL (NPI 1891554044).
Provider details
- NPI number
- 1891554044
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 125.083727 (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
2 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
- 2024-03-18
- Last updated
- 2024-05-17
- Certified
- 2024-05-17
Frequently asked questions
- What is Leah Gruen's NPI number?
- Leah Gruen's National Provider Identifier (NPI) is 1891554044, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leah Gruen's specialty?
- Leah Gruen is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Leah Gruen located?
- Leah Gruen's practice location on file with NPPES is 2160 S 1st Ave, Maywood, IL 60153-3328.
- What is Leah Gruen's phone number?
- The practice phone number listed in the NPPES registry for Leah Gruen is (708) 216-3250.
- Does Leah Gruen accept Medicare?
- Leah Gruen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leah Gruen's NPI active?
- Yes — Leah Gruen's NPI (1891554044) is active in the NPPES registry as of the last update on 2024-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.