Margaret Arlene Riddell
Family Medicine Physician · Marion, IA
Margaret Arlene Riddell is a family medicine physician with a practice address in Marion, Iowa, and NPI 1033913611, issued on Apr 2, 2025. Check the license (Iowa A181578, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Margaret Arlene Riddell
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A181578 IA
Self-reported in NPPES; status is on the state search - Practice location
- 3701 Katz Dr, Marion, IA 52302
- Phone
- (319) 377-3174
- Enumerated
- Apr 2, 2025
- Record last updated
- Apr 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20250602003404); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at 3701 Katz Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nancy Boelter, M.D.Family Medicine Physician1629015177
- Carrie Brown-Benn, ARNPFamily Nurse Practitioner1306854781
- Timothy Formanek, PAPhysician Assistant1598718215
- Matthew Fox, MDFamily Medicine Physician1780644849
- Julie Hoffmann, NPFamily Nurse Practitioner1225004161
- Megan Iannaci, PA-CPhysician Assistant1013430925
Verify Margaret Arlene Riddell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license A181578Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mercy Physician Associates IncHiawatha, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Arlene Riddell among 2,336 family medicine physician records in Iowa
Margaret Arlene Riddell 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. Its NPI, issued in 2025, is newer than 96% of them.
- NPI issued2025 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2024 · median 2006 among the 1,367 with a school on file
- Record last updated2025 · 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).
17 family medicine physician records list a practice address in Marion
They are 17 of the 260 NPPES records with a practice address in Marion, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Marion → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nancy Boelter, M.D.Marion, IA 523021629015177
- Matthew Fox, MDMarion, IA 523021780644849
- Fred Goldblatt, D.O.Marion, IA 523021427046614
- Richard Hodge, MDMarion, IA 523021801874615
- David Kresnicka, M.D.Marion, IA 523021982685111
- Deepti Kurra, MDMarion, IA 523021255561023
- James McCabe, M.D.Marion, IA 523021043386931
- Ann Metzger, MDMarion, IA 523021437137668
Common questions
What is Margaret Arlene Riddell's NPI number?
Margaret Arlene Riddell's National Provider Identifier (NPI) is 1033913611, issued on Apr 2, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Arlene Riddell located?
The NPPES record lists a practice address at 3701 Katz Dr, Marion, IA, 52302. Phone: (319) 377-3174. Providers update this record themselves, so call before visiting.
How can I verify Margaret Arlene Riddell's license?
NPPES lists Iowa license number A181578, 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. Medicare files from data.cms.gov. 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.