Brian D. Masonholder, D.O.
Family Medicine Physician · Columbus Junction, IA
Brian D. Masonholder, D.O. is a family medicine physician with a practice address in Columbus Junction, Iowa, and NPI 1851333942, issued on Jun 12, 2006. Check the license (Iowa 01809, as entered in NPPES) on the Iowa Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Brian D. Masonholder
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01809 IA
Self-reported in NPPES; status is on the state search - Practice location
- 109 E Walnut St, Columbus Junction, IA 52738
- Phone
- (319) 728-2429
- Enumerated
- Jun 12, 2006
- Record last updated
- Feb 28, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (319) 728-7600
- Medicaid ID
- 0171975 IA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at 109 E Walnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Woepking, ARNPFamily Nurse Practitioner1457901977
Verify Brian D. Masonholder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 01809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Brian D. Masonholder among 2,336 family medicine physician records in Iowa
Brian D. Masonholder, D.O. is one of 2,336 family medicine physician records with a practice address in Iowa. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Iowa
There are 2,336 family medicine physician records in Iowa. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
The 8 family medicine physician records with the nearest ZIP codes
- Susan Dirks, M.D.Columbus City, IA 527371114976875
- Jennifer Bell, M.D.De Witt, IA 527421225079817
- Michael Cloos, D.O.De Witt, IA 527421750761383
- Allison Edmunds, DNPDe Witt, IA 527421518647932
- Steven Fowler, M.D.De Witt, IA 527421619927126
- Steven Hanas, MDDe Witt, IA 527421265437883
- Peter Laureijs, M.D.De Witt, IA 527421831141043
- Candace Shanks, MDDe Witt, IA 527421710956727
Common questions
What is Brian D. Masonholder, D.O.'s NPI number?
Brian D. Masonholder, D.O.'s National Provider Identifier (NPI) is 1851333942, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian D. Masonholder, D.O. located?
The NPPES record lists a practice address at 109 E Walnut St, Columbus Junction, IA, 52738. Phone: (319) 728-2429. Providers update this record themselves, so call before visiting.
How can I verify Brian D. Masonholder, D.O.'s license?
NPPES lists Iowa license number 01809, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.