NPPES file of Aug 9, 2026

Charles J. Walker, DO

Diagnostic Radiology Physician · Indianapolis, IN

Charles J. Walker, DO is a diagnostic radiology physician with a practice address in Indianapolis, Indiana, and NPI 1437153095, issued on Jun 10, 2005. Check the license (Indiana 02004140A, as entered in NPPES) on the Medical Licensing Board of Indiana; 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
1437153095
Name
Charles J. Walker
Credential
DO
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
02004140A IN
35362-021 WI
Self-reported in NPPES; status is on the state search
Practice location
3660 Guion RD, Indianapolis, IN 46222
Phone
(317) 920-7139
Enumerated
Jun 10, 2005
Record last updated
Sep 27, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(317) 920-7229
Medicaid IDs
30064200 WI
201136420 IN
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 diagnostic radiology physician records → All 779 in Indiana → Look up another NPI →

Also registered at 3660 Guion RD

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

  1. Inna Aroutiounova, M.D.Rheumatology Physician1174523351
  2. David Harrison, DOColon & Rectal Surgery Physician1255396255
  3. Benny Ko, M.D.Diagnostic Radiology Physician1912038597
  4. Chris LanningHealth Educator1679108070
  5. Sudha Manepalli, FNP-CFamily Nurse Practitioner1588316087
  6. Todd Midla, DOSpecialist1881641520

Verify Charles J. Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Licensing Board of Indiana
    Search for license 02004140A    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
Open the Indiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Charles J. Walker among 779 diagnostic radiology physician records in Indiana

Charles J. Walker, DO is one of 779 diagnostic radiology physician records with a practice address in Indiana. 73% 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 77% newer
  • In a Medicare fileNo · 73% of these records are
  • In the CMS Doctors and Clinicians fileNo · 68% of these records are
  • Record last updated2015 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

337 diagnostic radiology physician records list a practice address in Indianapolis

They are 337 of the 30,493 NPPES records with a practice address in Indianapolis, and 779 diagnostic radiology physician records in Indiana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 779 in Indiana → Every provider in Indianapolis → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. David Goldenberg, M.D.Indianapolis, IN 462221063454171
  2. Benny Ko, M.D.Indianapolis, IN 462221912038597
  3. David Williams, D.O.Indianapolis, IN 462221689705287
  4. Enzo Cento, M DIndianapolis, IN 462201821264268
  5. Robert Mehl, MDIndianapolis, IN 462081952340754
  6. Maureen Watson, MDIndianapolis, IN 462371164401014
  7. Richard Paulsen, M.D.Indianapolis, IN 462041780692996
  8. Eric Abshire, DOIndianapolis, IN 462021700454931

Common questions

What is Charles J. Walker, DO's NPI number?

Charles J. Walker, DO's National Provider Identifier (NPI) is 1437153095, issued on Jun 10, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Charles J. Walker, DO located?

The NPPES record lists a practice address at 3660 Guion RD, Indianapolis, IN, 46222. Phone: (317) 920-7139. Providers update this record themselves, so call before visiting.

How can I verify Charles J. Walker, DO's license?

NPPES lists Indiana license number 02004140A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. 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.

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.