Nathan Aardsma, D.O.
NPI 1649579939 · Anatomic Pathology & Clinical Pathology Physician · Dyer, IN
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Aardsma, D.O. is a Anatomic Pathology & Clinical Pathology Physician provider in Dyer, IN (NPI 1649579939).
Provider details
- NPI number
- 1649579939
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 036.137383 (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
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,581 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 | 1,092 | $34 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 658 | $26 |
| Microscopic Genetic Analysis of Tissue, Manual, Each Additional Multiplex Stain Procedure88377 | 243 | $59 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 198 | $32 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 171 | $11 |
| Blood Smear Interpretation By Physician With Written Report85060 | 164 | $22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-03-25
- Last updated
- 2024-01-23
- Certified
- 2024-01-23
Frequently asked questions
- What is Nathan Aardsma's NPI number?
- Nathan Aardsma's National Provider Identifier (NPI) is 1649579939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Aardsma's specialty?
- Nathan Aardsma is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Aardsma located?
- Nathan Aardsma's practice location on file with NPPES is 24 Joliet St, Dyer, IN 46311-1705.
- What is Nathan Aardsma's phone number?
- The practice phone number listed in the NPPES registry for Nathan Aardsma is (219) 865-2141.
- Does Nathan Aardsma accept Medicare?
- Nathan Aardsma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Aardsma's NPI active?
- Yes — Nathan Aardsma's NPI (1649579939) is active in the NPPES registry as of the last update on 2024-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.