Peter Aas, MD
NPI 1063455848 · Hospitalist Physician · Duluth, MN
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Aas, MD is a Hospitalist Physician provider in Duluth, MN (NPI 1063455848).
Provider details
- NPI number
- 1063455848
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45641 (MN)
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
20 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
392 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 150 | $74 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 93 | $112 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 72 | $46 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 27 | $163 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 27 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 33 | 15 |
| Apixabanbrand: Eliquis | 23 | — |
| Gabapentin | 22 | — |
| Omeprazole | 16 | 13 |
| Lisinopril | 13 | — |
| Losartan Potassium | 12 | — |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-13
- Last updated
- 2017-11-01
Frequently asked questions
- What is Peter Aas's NPI number?
- Peter Aas's National Provider Identifier (NPI) is 1063455848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Aas's specialty?
- Peter Aas is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Aas located?
- Peter Aas's practice location on file with NPPES is 400 E 3rd St, Duluth, MN 55805-1951.
- What is Peter Aas's phone number?
- The practice phone number listed in the NPPES registry for Peter Aas is (218) 786-8364.
- Does Peter Aas accept Medicare?
- Peter Aas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Aas's NPI active?
- Yes — Peter Aas's NPI (1063455848) is active in the NPPES registry as of the last update on 2017-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.