Ralph J. Duman, MD
Diagnostic Radiology Physician · Sault Ste Marie, MI
Ralph J. Duman, MD is a diagnostic radiology physician with a practice address in Sault Ste Marie, Michigan, and NPI 1326003575, issued on Apr 19, 2006. Check the license (Michigan 4301050500, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Ralph J. Duman
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 4301050500 MI
Self-reported in NPPES; status is on the state search - Practice location
- 500 Osborn Blvd, Sault Ste Marie, MI 49783
- Phone
- (906) 635-4438
- Enumerated
- Apr 19, 2006
- Record last updated
- Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (906) 635-4617
- Medicaid ID
- 4732379 MI
- Medicare enrollment
- Enrolled (PECOS I20050525000632); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,584 in Michigan → Look up another NPI →
Also registered at 500 Osborn Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marzena Kamzol-Gazda, BSN, MSN, CFNP, RNFANurse Practitioner1487833851
- Pragnya ParomitaPhysical Therapist1295237766
- Richard Siders, MDDiagnostic Radiology Physician1477630432
- Nicholas Sliger, PT, DPTPhysical Therapist1689263220
Verify Ralph J. Duman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301050500Check 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
- Mymichigan Medical Center SaultSault S Marie, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ralph J. Duman among 1,584 diagnostic radiology physician records in Michigan
Ralph J. Duman, MD is one of 1,584 diagnostic radiology physician records with a practice address in Michigan. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 50% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1985 · median 2003 among the 1,007 with a school on file
- Record last updated2021 · 59% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 diagnostic radiology physician records list a practice address in Sault Ste Marie
They are 2 of the 18 NPPES records with a practice address in Sault Ste Marie, and 1,584 diagnostic radiology physician records in Michigan.
All 1,584 in Michigan → Every provider in Sault Ste Marie → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Richard Siders, MDSault Ste Marie, MI 497831477630432
- Michael Angileri, MDPetoskey, MI 497701073512687
- Lisa Fortin, M.D.Petoskey, MI 497701770794992
- Nel Go, M.D.Petoskey, MI 497701043446834
- William Henry, MDPetoskey, MI 497701205835824
- Anthony Pucci, DOPetoskey, MI 497701922007582
- William Riordan, DOPetoskey, MI 497701447259718
- Janice Schwinke, MDPetoskey, MI 497701558360727
Common questions
What is Ralph J. Duman, MD's NPI number?
Ralph J. Duman, MD's National Provider Identifier (NPI) is 1326003575, issued on Apr 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ralph J. Duman, MD located?
The NPPES record lists a practice address at 500 Osborn Blvd, Sault Ste Marie, MI, 49783. Phone: (906) 635-4438. Providers update this record themselves, so call before visiting.
How can I verify Ralph J. Duman, MD's license?
NPPES lists Michigan license number 4301050500, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. 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.