Dr. Rex W. Rundquist, MD
- Part D claims, 2018
- 11
- Industry payments
- $666
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 1125 Pierce St, Sioux City, IA 51105-1485
- Practice phone
- Call (712) 255-8901
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prairie Pediatrics & Adolescent Clinic, PC
Multi-specialty group site · Sioux City, Iowa
Find Dr. Rundquist's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Rex W. Rundquist is a pediatrician in Sioux City, Iowa
Dr. Rundquist practices at Prairie Pediatrics & Adolescent Clinic, PC in Sioux City, Iowa.
Dr. Rundquist's NPI, 1881691392, was assigned on June 30, 2005. Dr. Rundquist holds Iowa license 21617.
- NPI
- 1881691392NPI Registry (opens in a new tab)
- NPI enumeration date
- June 30, 2005
- NPI status
- Active
- Practice phone
- (712) 255-8901
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rex W. Rundquist practices at Prairie Pediatrics & Adolescent Clinic, PC in Sioux City, Iowa
Dr. Rundquist's primary practice is Prairie Pediatrics & Adolescent Clinic, PC, at 1125 Pierce St, Sioux City, IA 51105-1485. The practice phone is (712) 255-8901.
- Prairie Pediatrics & Adolescent Clinic, PC1125 Pierce St, Sioux City, IA 51105-1485Phone(712) 255-8901
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rex W. Rundquist is affiliated with 1 site of care and 1 medical group
Dr. Rundquist's primary practice is Prairie Pediatrics & Adolescent Clinic, PC in Sioux City, Iowa. Dmand AI also links Dr. Rundquist to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Rex W. Rundquist's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rundquist practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prairie Pediatrics & Adolescent Clinic, PC | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rex W. Rundquist is one of 377 pediatricians in Iowa
Pediatrics is Dr. Rundquist's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Rundquist is licensed in Iowa.
Specialties and state licenses
- Pediatrics, IowaPrimary
Pediatricians near Dr. Rundquist
Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Rex W. Rundquist's patients have a median age of 17
Across all payers, Dmand AI patient panel data puts Dr. Rundquist's median patient age at 17, with 31% women.
Dr. Rundquist's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 17
Patient panel by sex, all payers
- Women31%
- Men67%
Source: Dmand AI Patient Panel Data
Dr. Rex W. Rundquist wrote 11 Medicare Part D claims in 2018
In 2018, Dr. Rundquist wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $49 in total drug cost.
Dr. Rundquist's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Rex W. Rundquist received $666 in industry payments from 2016 to 2019
CMS Open Payments shows 52 general payments to Dr. Rundquist from 9 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Shire North American Group Inc paid the most, $311.
General payments to Dr. Rundquist by program year, 2016 to 2019
Companies that paid Dr. Rundquist the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Rex W. Rundquist's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Rex W. Rundquist
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Rex W. Rundquist's NPI number?
Dr. Rex W. Rundquist's NPI number is 1881691392. It was assigned on June 30, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Rex W. Rundquist?
Dr. Rex W. Rundquist is a pediatrician in Sioux City, Iowa. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Rex W. Rundquist practice?
Dr. Rundquist practices at 1125 Pierce St, Sioux City, IA 51105-1485. Dr. Rundquist's primary practice is Prairie Pediatrics & Adolescent Clinic, PC in Sioux City, Iowa. Dmand AI also links Dr. Rundquist to 1 medical group.
What is Dr. Rex W. Rundquist's office phone number?
The practice phone on file for Dr. Rundquist is (712) 255-8901.
What is Dr. Rex W. Rundquist's medical license number?
Dr. Rundquist holds Iowa license 21617.
What drugs does Dr. Rex W. Rundquist prescribe most?
In 2018 Medicare Part D data, Dr. Rundquist's most prescribed drugs by claims were Escitalopram Oxalate.
Has Dr. Rex W. Rundquist received payments from drug or device companies?
CMS Open Payments shows $666 in general payments to Dr. Rundquist from 9 companies from 2016 to 2019. The largest total came from Shire North American Group Inc.
How long has Dr. Rex W. Rundquist been practicing?
Dr. Rundquist's NPI was assigned in 2005.
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