Peter Aas, MD
Hospitalist Physician · Duluth, MN
Peter Aas, MD is a hospitalist physician with a practice address in Duluth, Minnesota, and NPI 1063455848, issued on Jun 13, 2006. Check the license (Minnesota 45641, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Peter Aas
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 45641 MN
Self-reported in NPPES; status is on the state search - Practice location
- 400 E 3RD St, Duluth, MN 55805
- Phone
- (218) 786-8364
- Enumerated
- Jun 13, 2006
- Record last updated
- Nov 1, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 779472000 MN
- Medicare enrollment
- Enrolled (PECOS I20050906000676); may accept Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 2002
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 401 in Minnesota → Look up another NPI →
Also registered at 400 E 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Glenn Albin, M.DCardiovascular Disease Physician1902851116
- David AlexanderDiagnostic Radiology Physician1932135936
- Mir AliHospitalist Physician1154357077
Verify Peter Aas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 45641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average hospitalist physician in 2024
386 Medicare Part D claims for 113 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium33 claims
- Eliquis23 claims
- Gabapentin22 claims
- Omeprazole16 claims
- Lisinopril13 claims
- Losartan Potassium12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Peter Aas among 401 hospitalist physician records in Minnesota
Peter Aas, MD is one of 401 hospitalist physician records with a practice address in Minnesota. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 78% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 88% of these records are
- Graduated2002 · median 2011 among the 354 with a school on file
- Record last updated2017 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
72 hospitalist physician records list a practice address in Duluth
They are 72 of the 4,084 NPPES records with a practice address in Duluth, and 401 hospitalist physician records in Minnesota.
All 401 in Minnesota → Every provider in Duluth → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Mir AliDuluth, MN 558051154357077
- James BerquistDuluth, MN 558051114942737
- Andrew Broadmoore, MDDuluth, MN 558051508828633
- Kuo Hau Chang, D.O.Duluth, MN 558051124077425
- John Degelau, MDDuluth, MN 558051063489375
- Dawn Drotar, MDDuluth, MN 558051891779120
- Kenneth Howard, MDDuluth, MN 558051477504314
- James JorgensonDuluth, MN 558051730112608
Common questions
What is Peter Aas, MD's NPI number?
Peter Aas, MD's National Provider Identifier (NPI) is 1063455848, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter Aas, MD located?
The NPPES record lists a practice address at 400 E 3RD St, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.
How can I verify Peter Aas, MD's license?
NPPES lists Minnesota license number 45641, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter Aas, MD prescribe under Medicare Part D?
In 2024, Peter Aas, MD had 386 Medicare Part D claims for 113 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.