National Provider Identifier Database

DAVID A CLAASSEN, MD PHD – NPI #1871892455
Pediatric Hematology-Oncology

A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.


Contact Information

DAVID A CLAASSEN, MD PHD
200 HAWKINS DR
IOWA CITY, IA52242-1009
Phone: 319-356-3595
Fax: 319-356-7659
Website:
Specialty Taxonomy Code
* Pediatric Hematology-Oncology 2080P0207X
Neonatal-Perinatal Medicine 2080N0001X
Pediatrics 208000000X

* Indicates primary specialty

NPI Profile & details for DAVID A CLAASSEN

NPI Number 1871892455
Credentials MD PHD
Entity Individual
Enumeration date 03/22/2011
Last updated 08/21/2025 - About 10 months ago
Sole proprietor1 No
Identifiers
  • IA License #: MD-45319
  • TX License #: Q0619
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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