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

Frederick Simon Isaak, MD

Individual provider Emergency Medicine Physician · NPI 1639129281

Frederick Simon Isaak, MD is a Family Practice in Dubuque, Iowa. Graduated from University of North Dakota School of Medicine in 1986, 40 years ago. Practices with Medical Associates Clinic P C, a 227-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
40
Trained at
University of North Dakota School of Medicine
Licensed in
IA
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.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1000 Langworthy St
Dubuque, IA 52001-7313
Phone: (563) 584-3455
Fax: (563) 584-3177
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 28293 (IA)
Occupational Medicine Physician Taxonomy 2083X0100X · Licence 28293 (IA)

Record details

NPI number1639129281
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2006
Last updated in NPPESApril 11, 2008
Mailing address1500 Associates Dr, Dubuque, IA 52002-2201

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Medical Associates Clinic P C — 227 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Dubuque