NPPES file of Aug 9, 2026

Andrew George Keenan, M.D.

Hospitalist Physician · Duluth, MN

Andrew George Keenan, M.D. is a hospitalist physician with a practice address in Duluth, Minnesota, and NPI 1821239161, issued on Mar 17, 2009. Check the license (Minnesota 53598, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821239161
Name
Andrew George Keenan
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License numbers
53598 MN
MD7497 AK
Self-reported in NPPES; status is on the state search
Practice location
Essentia Health Duluth Clinic, Duluth, MN 55805
Phone
(218) 786-8364
Enumerated
Mar 17, 2009
Record last updated
Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicaid ID
MD9366 AK
Medicare enrollment
Enrolled (PECOS I20131025000200); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2008
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at Essentia Health Duluth Clinic

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Terri HalversonObstetrics & Gynecology Nurse Practitioner1962805549
  2. Gretchen KehoePhysician Assistant1164874699
  3. Joel Kolmodin, MDPediatric Orthopaedic Surgery Physician1295051407
  4. Sarah Lach, PA-CPhysician Assistant1437525417
  5. Cheryl LagergrenClinical Social Worker1689075012

Verify Andrew George Keenan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 53598
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Minnesota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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16% more Medicare Part D claims than the average hospitalist physician in 2024

602 Medicare Part D claims for 110 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 68% of claims.

  1. Andrew Keenan602
  2. Specialty average521

Most prescribed

  1. Trelegy Ellipta69 claims
  2. Breztri Aerosphere67 claims
  3. Prednisone58 claims
  4. Azithromycin46 claims
  5. Albuterol Sulfate Hfa38 claims
  6. Ventolin Hfa31 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.

Industry payments in 2024: $85.27

1 payment: food and beverage; the largest payer was Intuitive Surgical, Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Andrew Keenan$85.27
  2. Specialty average$494.84

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. The Duluth Clinic LtdDuluth, MN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (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.

Other hospitalist physician records in Minnesota

  1. Peter Aas, MDDuluth, MN1063455848
  2. Maichel Abou El Makarim Gharabawy, M.DMinneapolis, MN1871735936
  3. Paula Abramovith Feijo, MDRed Wing, MN1386653384
  4. Akata Abung, MDBemidji, MN1750113205
  5. Letitia Acquah, MDRochester, MN1003851247
  6. Bariituu Adam, MDMinneapolis, MN1316393622
  7. Olayiwola Adetunji, MBBSSt Cloud, MN1578552477
  8. Abdisalan Afrah, M.DMaplewood, MN1952501736
  9. Ese Aghenta, M.B.B.S.Robbinsdale, MN1972921567
  10. Malik Ahmad, M.D.Saint Cloud, MN1174181614

Common questions

What is Andrew George Keenan, M.D.'s NPI number?

Andrew George Keenan, M.D.'s National Provider Identifier (NPI) is 1821239161, issued on Mar 17, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Andrew George Keenan, M.D. located?

The NPPES record lists a practice address at Essentia Health Duluth Clinic, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.

How can I verify Andrew George Keenan, M.D.'s license?

NPPES lists Minnesota license number 53598, 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 Andrew George Keenan, M.D. prescribe under Medicare Part D?

In 2024, Andrew George Keenan, M.D. had 602 Medicare Part D claims for 110 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.