Garth Aasen, MD
NPI 1013159037 · Anatomic Pathology & Clinical Pathology Physician · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garth Aasen, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Sioux Falls, SD (NPI 1013159037).
Provider details
- NPI number
- 1013159037
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 10663 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
4,207 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 | 1,596 | $35 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 594 | $26 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 307 | $11 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 247 | $33 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 195 | $11 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 176 | $78 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-06
- Last updated
- 2018-03-05
Frequently asked questions
- What is Garth Aasen's NPI number?
- Garth Aasen's National Provider Identifier (NPI) is 1013159037, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garth Aasen's specialty?
- Garth Aasen is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Garth Aasen located?
- Garth Aasen's practice location on file with NPPES is 1301 S Cliff Ave Ste 700, Sioux Falls, SD 57105-1019.
- What is Garth Aasen's phone number?
- The practice phone number listed in the NPPES registry for Garth Aasen is (605) 322-7200.
- Does Garth Aasen accept Medicare?
- Garth Aasen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garth Aasen's NPI active?
- Yes — Garth Aasen's NPI (1013159037) is active in the NPPES registry as of the last update on 2018-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.