NPPES file of Aug 9, 2026

Ralph M. Colburn, MD

Diagnostic Radiology Physician · Madison, WI

Ralph M. Colburn, MD is a diagnostic radiology physician with a practice address in Madison, Wisconsin, and NPI 1730169624, issued on Jan 18, 2006. Check the license (Wisconsin 18855, as entered in NPPES) on the Wisconsin Medical Examining Board; 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
1730169624
Name
Ralph M. Colburn
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
18855 WI
Self-reported in NPPES; status is on the state search
Practice location
600 Highland Ave, Madison, WI 53792
Phone
(608) 263-8340
Enumerated
Jan 18, 2006
Record last updated
Apr 2, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(608) 265-6533
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 1,005 in Wisconsin → Look up another NPI →

Also registered at 600 Highland Ave

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

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  2. Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
  3. Daniel Abbott, MDSurgical Oncology Physician1750412615
  4. Alaa Abd-ElsayedPain Medicine Physician1194967703
  5. Safiyya Abdulkadir, MDRheumatology Physician1093455826
  6. Edwin Abel, M.D.Urology Physician1083800510

Verify Ralph M. Colburn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 18855    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 Wisconsin license search

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Ralph M. Colburn among 1,005 diagnostic radiology physician records in Wisconsin

Ralph M. Colburn, MD is one of 1,005 diagnostic radiology physician records with a practice address in Wisconsin. 68% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 48% newer
  • In a Medicare fileNo · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2009 · 51% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

224 diagnostic radiology physician records list a practice address in Madison

They are 224 of the 15,014 NPPES records with a practice address in Madison, and 1,005 diagnostic radiology physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,005 in Wisconsin → Every provider in Madison → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Donna Blankenbaker, MDMadison, WI 537921558322065
  2. Arthur Desmet, MDMadison, WI 537921912975830
  3. Louis Fischer, M.D.Madison, WI 537921265404800
  4. Thomas Grist, MDMadison, WI 537921841269859
  5. John Jerisha, MDMadison, WI 537921053389288
  6. Newrhee Kim, MDMadison, WI 537921952370256
  7. Janet Kuhlman, MDMadison, WI 537921669440673
  8. Perry Pickhardt, MDMadison, WI 537921962464123

Common questions

What is Ralph M. Colburn, MD's NPI number?

Ralph M. Colburn, MD's National Provider Identifier (NPI) is 1730169624, issued on Jan 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ralph M. Colburn, MD located?

The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 263-8340. Providers update this record themselves, so call before visiting.

How can I verify Ralph M. Colburn, MD's license?

NPPES lists Wisconsin license number 18855, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. 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.