Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Thomas Mark Johnson, MD

Individual provider Cardiovascular Disease Physician · NPI 1801848486

Thomas Mark Johnson, MD is a Cardiovascular Disease (Cardiology) in Dubuque, Iowa. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1974, 52 years ago. Practices with Medical Associates Clinic P C, a 227-clinician group and accepts Medicare assignment. Licensed in Iowa and Wisconsin.

Years since qualifying
52
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
IA, WI
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1000 Langworthy St
Dubuque, IA 52001-7313
Phone: (563) 584-3425
Fax: (563) 584-3497
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 21505 (IA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 29644 (WI)

Record details

NPI number1801848486
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2006
Last updated in NPPESNovember 25, 2009
Mailing address1500 Associates Dr, Dubuque, IA 52002-2201

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1974 (52 years in practice)
Group practice Medical Associates Clinic P C — 227 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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