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

Dr. Adrian Grant Letz, MD

Individual provider Allergy & Immunology Physician · NPI 1033221916

Dr. Adrian Grant Letz, MD is an Allergy/Immunology in Dubuque, Iowa. Graduated from University of Texas Southwestern Medical School at Dallas in 2002, 24 years ago. Practices with Iowa Physicians Clinic Medical Foundation, a 1,242-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
24
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
IA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1515 Delhi St Ste 100
Dubuque, IA 52001-6320
Phone: (563) 557-9111
Fax: (563) 557-5560
Show map & directions

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence 43086 (IA)

Record details

NPI number1033221916
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 31, 2006
Last updated in NPPESApril 6, 2021
Certification dateApril 6, 2021

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2002 (24 years in practice)
Group practice Iowa Physicians Clinic Medical Foundation — 1242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare