Mark O. Liaboe, M.D.
Internal Medicine Physician · Dubuque, IA
Mark O. Liaboe, M.D. is an internal medicine physician with a practice address in Dubuque, Iowa, and NPI 1194794321, issued on Mar 17, 2006. Check the license (Iowa 22876, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark O. Liaboe
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 22876 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Delhi St, Dubuque, IA 52001
- Phone
- (563) 557-9111
- Enumerated
- Mar 17, 2006
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (563) 589-4046
- Medicaid IDs
- 0194662 IA
30449800 WI
0180379097 IL - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 1515 Delhi St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebekah Bond, M.D.Hospitalist Physician1588633002
- Zhengjin Cao, M.D.Internal Medicine Physician1861616039
- Richard Fairley, M.D.Internal Medicine Physician1801862552
- Krishnarao Gorrepati, MDGastroenterology Physician1588624811
- Angela Hubanks, PA-CMedical Physician Assistant1356538300
- Ronald Iverson, M.D.Endocrinology, Diabetes & Metabolism Physician1265407589
Verify Mark O. Liaboe in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 22876Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average internal medicine physician in 2024
3,226 Medicare Part D claims for 453 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium234 claims
- Omeprazole183 claims
- Losartan Potassium142 claims
- Amlodipine Besylate130 claims
- Eliquis108 claims
- Simvastatin106 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.
Mark O. Liaboe among 871 internal medicine physician records in Iowa
Mark O. Liaboe, M.D. is one of 871 internal medicine physician records with a practice address in Iowa. 70% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 62% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 44% of these records are
- Record last updated2021 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 internal medicine physician records list a practice address in Dubuque
They are 30 of the 1,468 NPPES records with a practice address in Dubuque, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Dubuque → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Catherine Crall, M.D.Dubuque, IA 520011104896273
- Richard Fairley, M.D.Dubuque, IA 520011801862552
- Angela Kelley, D.O.Dubuque, IA 520011881654473
- Matthew Kirkendall, M.D.Dubuque, IA 520011821067794
- Cynthia Konz, M.D.Dubuque, IA 520011013986918
- Ian Koontz, M.D.Dubuque, IA 520011205805199
- Philip Leeson, M.D.Dubuque, IA 520011932175676
- Allen Meurer, M.D.Dubuque, IA 520011114986353
Common questions
What is Mark O. Liaboe, M.D.'s NPI number?
Mark O. Liaboe, M.D.'s National Provider Identifier (NPI) is 1194794321, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark O. Liaboe, M.D. located?
The NPPES record lists a practice address at 1515 Delhi St, Dubuque, IA, 52001. Phone: (563) 557-9111. Providers update this record themselves, so call before visiting.
How can I verify Mark O. Liaboe, M.D.'s license?
NPPES lists Iowa license number 22876, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark O. Liaboe, M.D. prescribe under Medicare Part D?
In 2024, Mark O. Liaboe, M.D. had 3,226 Medicare Part D claims for 453 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.