NPPES file of Aug 9, 2026

James Donald Walker, DDS

General Practice Dentistry · Marion, IA

James Donald Walker, DDS is a general practice dentistry with a practice address in Marion, Iowa, and NPI 1194045054, issued on Jun 2, 2010. Check the license (Iowa 08786, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194045054
Name
James Donald Walker
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
08786 IA
Self-reported in NPPES; status is on the state search
Practice location
601 Tama St, Marion, IA 52302
Phone
(319) 366-2451
Enumerated
Jun 2, 2010
Record last updated
Dec 3, 2014 (not updated in 12 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest general practice dentistry records → All 1,239 in Iowa → Look up another NPI →

Also registered at 601 Tama St

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

  1. Thomas Ervin, DDSGeneral Practice Dentistry1487741195
  2. Perry Grimes, DDSGeneral Practice Dentistry1821184086

Verify James Donald Walker 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 08786    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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7% more Medicare Part D claims than the average general practice dentistry in 2024

89 Medicare Part D claims for 57 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. James Walker89
  2. Specialty average83

Most prescribed

  1. Amoxicillin55 claims
  2. Clindamycin Hcl13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

James Donald Walker among 1,239 general practice dentistry records in Iowa

James Donald Walker, DDS is one of 1,239 general practice dentistry records with a practice address in Iowa. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.

  • NPI issued2010 · 65% of these records are older, 32% newer
  • In a Medicare fileYes · 61% of these records are
  • In the CMS Doctors and Clinicians fileNo · 1% of these records are
  • Record last updated2014 · 76% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

11 general practice dentistry records list a practice address in Marion

They are 11 of the 260 NPPES records with a practice address in Marion, and 1,239 general practice dentistry records in Iowa.

All 1,239 in Iowa → Every provider in Marion → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Lindsay Brown, D.D.S.Marion, IA 523021699763367
  2. Thomas Ervin, DDSMarion, IA 523021487741195
  3. Perry Grimes, DDSMarion, IA 523021821184086
  4. Erin Lacey, DDSMarion, IA 523021689778680
  5. Connie Miller, D.D.S.Marion, IA 523021629197843
  6. Peter Nopoulos, DDSMarion, IA 523021487736229
  7. Kendall Oldham, DDSMarion, IA 523021700702834
  8. Charles Scholl, DDSMarion, IA 523021013137629

Common questions

What is James Donald Walker, DDS's NPI number?

James Donald Walker, DDS's National Provider Identifier (NPI) is 1194045054, issued on Jun 2, 2010. An NPI identifies a provider in billing; it is not a license.

Where is James Donald Walker, DDS located?

The NPPES record lists a practice address at 601 Tama St, Marion, IA, 52302. Phone: (319) 366-2451. Providers update this record themselves, so call before visiting.

How can I verify James Donald Walker, DDS's license?

NPPES lists Iowa license number 08786, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

How much does James Donald Walker, DDS prescribe under Medicare Part D?

In 2024, James Donald Walker, DDS had 89 Medicare Part D claims for 57 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.