Randall Dieleman, DO
NPI 1538709985 · Emergency Medicine Physician · Ottumwa, IA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Randall Dieleman, DO is a Emergency Medicine Physician provider in Ottumwa, IA (NPI 1538709985).
Provider details
- NPI number
- 1538709985
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 02126 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2020-01-14
- Last updated
- 2020-01-14
- Certified
- 2020-01-14
Frequently asked questions
- What is Randall Dieleman's NPI number?
- Randall Dieleman's National Provider Identifier (NPI) is 1538709985, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Randall Dieleman's specialty?
- Randall Dieleman is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Randall Dieleman located?
- Randall Dieleman's practice location on file with NPPES is 1001 Pennsylvania Ave, Ottumwa, IA 52501-6427.
- What is Randall Dieleman's phone number?
- The practice phone number listed in the NPPES registry for Randall Dieleman is (641) 684-3173.
- Does Randall Dieleman accept Medicare?
- Randall Dieleman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Randall Dieleman's NPI active?
- Yes — Randall Dieleman's NPI (1538709985) is active in the NPPES registry as of the last update on 2020-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.