Heidi Rahn, M.D.
NPI 1891057949 · Anatomic Pathology & Clinical Pathology Physician · Westmont, IL
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Heidi Rahn, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Westmont, IL (NPI 1891057949).
Provider details
- NPI number
- 1891057949
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036.138007 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,165 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 713 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 376 | $28 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 171 | $34 |
| Protein Measurement, Serum84165 | 134 | $18 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 114 | $41 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 96 | $84 |
Practice location
Mailing address
Additional practice locations (2)
- 2650 Ridge Ave Ste 1304Evanston, IL 60201-1718Phone: (847) 570-2019
- 1206 E 9th St Ste 200Lockport, IL 60441-2404Phone: (630) 545-7524Fax: (630) 351-2425
Registry dates
- Enumerated
- 2012-06-14
- Last updated
- 2025-05-30
- Certified
- 2025-05-30
Frequently asked questions
- What is Heidi Rahn's NPI number?
- Heidi Rahn's National Provider Identifier (NPI) is 1891057949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heidi Rahn's specialty?
- Heidi Rahn is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Heidi Rahn located?
- Heidi Rahn's practice location on file with NPPES is 318 E Des Moines St, Westmont, IL 60559.
- What is Heidi Rahn's phone number?
- The practice phone number listed in the NPPES registry for Heidi Rahn is (815) 751-4937.
- Does Heidi Rahn accept Medicare?
- Heidi Rahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Heidi Rahn's NPI active?
- Yes — Heidi Rahn's NPI (1891057949) is active in the NPPES registry as of the last update on 2025-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.