NPPES file of Aug 9, 2026

Douglas Grant Leon, DC

Chiropractor · Maquoketa, IA

Douglas Grant Leon, DC is a chiropractor with a practice address in Maquoketa, Iowa, and NPI 1932154044, issued on May 24, 2006. Check the license (Iowa 04417, as entered in NPPES) with the Iowa board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932154044
Name
Douglas Grant Leon
Credential
DC
Primary taxonomy
Chiropractor 111N00000X
License number
04417 IA
Self-reported in NPPES; status is on the state search
Practice location
606 E Platt St, Maquoketa, IA 52060
Phone
(563) 652-5687
Enumerated
May 24, 2006
Record last updated
Jul 13, 2026
Fax
(563) 652-0281
Medicaid ID
0023754 IA
Medicare enrollment
Enrolled (PECOS I20040305001031); may accept Medicare assignment
Medical or professional school
Palmer College Chiropractic - Davenport, 1974
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest chiropractor records → All 2,019 in Iowa → Look up another NPI →

Also registered at 606 E Platt St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brent Leon, D.C.Chiropractor1255564217

Verify Douglas Grant Leon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 04417    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Iowa license search

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Douglas Grant Leon among 2,019 chiropractor records in Iowa

Douglas Grant Leon, DC is one of 2,019 chiropractor records with a practice address in Iowa. 21% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 59% newer
  • In a Medicare fileNo · 21% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated1974 · median 2007 among the 1,145 with a school on file
  • Record last updated2026 · 71% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 chiropractor records list a practice address in Maquoketa

They are 7 of the 108 NPPES records with a practice address in Maquoketa, and 2,019 chiropractor records in Iowa. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,019 in Iowa → Every provider in Maquoketa → Chiropractor nationwide →

The 8 chiropractor records with the nearest ZIP codes

  1. Carolyn Aise, DCMaquoketa, IA 520601669505509
  2. Paul Horst, D.C.Maquoketa, IA 520601922096155
  3. Brent Leon, D.C.Maquoketa, IA 520601255564217
  4. Brent Pauls, D.C.Maquoketa, IA 520601841490307
  5. Donald Schwenker, D.CMaquoketa, IA 520601437120870
  6. Matthew Waack, D.C.Maquoketa, IA 520601801911011
  7. Garry Dunn, D.C.Manchester, IA 520571457389553
  8. Leah Hubbard, D.C.Manchester, IA 520571386060002

Common questions

What is Douglas Grant Leon, DC's NPI number?

Douglas Grant Leon, DC's National Provider Identifier (NPI) is 1932154044, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Douglas Grant Leon, DC located?

The NPPES record lists a practice address at 606 E Platt St, Maquoketa, IA, 52060. Phone: (563) 652-5687. Providers update this record themselves, so call before visiting.

How can I verify Douglas Grant Leon, DC's license?

NPPES lists Iowa license number 04417, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.