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

Dr. David Alan Claassen, MDPHD

Individual provider Pediatric Hematology & Oncology Physician · NPI 1871892455

Dr. David Alan Claassen, MDPHD is a Hematology/Oncology in Iowa City, Iowa. Graduated from University of Nebraska College of Medicine in 2011, 15 years ago. Practices with State University of Iowa, a 1,885-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Iowa and Texas.

Years since qualifying
15
Trained at
University of Nebraska College of Medicine
Licensed in
IA, TX
In the registry since
2011
Specialties on file
3

Practice location Address checks out

200 Hawkins Dr
Iowa City, IA 52242-1009
Phone: (319) 356-3595
Fax: (319) 356-7659
Show map & directions

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

Additional practice locations (3)

  • 2624 Orchard Dr, Cedar Falls, IA 50613-5845 — (877) 891-5350
  • 5323 Harry Hines Blvd, Dallas, TX 75390-7208 — (214) 645-0624
  • 5323 Harry Hines Blvd, Dallas, TX 75390-7208 — (214) 645-0624

Specialties & licences

Pediatric Hematology & Oncology Physician (primary) Taxonomy 2080P0207X · Licence MD-45319 (IA)
Pediatrics Physician Taxonomy 208000000X · Licence MD-45319 (IA)
Neonatal-Perinatal Medicine Physician Taxonomy 2080N0001X · Licence Q0619 (TX)

Record details

NPI number1871892455
Entity typeIndividual (Type 1)
GenderMale
Credentials MDPHD
Sole proprietorNo
NPI enumeratedMarch 22, 2011
Last updated in NPPESAugust 21, 2025
Certification dateAugust 21, 2025

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolUNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice State University Of Iowa — 1885 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Iowa City