David Claassen, MD PHD
NPI 1871892455 · Pediatric Hematology & Oncology Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Claassen, MD PHD is a Pediatric Hematology & Oncology Physician provider in Iowa City, IA (NPI 1871892455).
Provider details
- NPI number
- 1871892455
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- Sole proprietor
- No
- License
- MD-45319 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (3)
- 2624 Orchard DrCedar Falls, IA 50613-5845Phone: (877) 891-5350
- 5323 Harry Hines BlvdDallas, TX 75390-7208Phone: (214) 645-0624Fax: (214) 645-0078
- 5323 Harry Hines BlvdDallas, TX 75390-7208Phone: (214) 645-0624Fax: (214) 645-0078
Registry dates
- Enumerated
- 2011-03-22
- Last updated
- 2025-08-21
- Certified
- 2025-08-21
Frequently asked questions
- What is David Claassen's NPI number?
- David Claassen's National Provider Identifier (NPI) is 1871892455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Claassen's specialty?
- David Claassen is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is David Claassen located?
- David Claassen's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is David Claassen's phone number?
- The practice phone number listed in the NPPES registry for David Claassen is (319) 356-3595.
- Does David Claassen accept Medicare?
- David Claassen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Claassen's NPI active?
- Yes — David Claassen's NPI (1871892455) is active in the NPPES registry as of the last update on 2025-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.