NPPES file of Aug 9, 2026

Chad James St. Germain, M.D.

Diagnostic Radiology Physician · Duluth, MN

Chad James St. Germain, M.D. is a diagnostic radiology physician with a practice address in Duluth, Minnesota, and NPI 1609037035, issued on Jun 18, 2008. Check the license (Minnesota 56430, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1609037035
Name
Chad James St. Germain
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
56430 MN
Self-reported in NPPES; status is on the state search
Practice location
400 East Third Street, Duluth, MN 55805
Phone
(218) 786-8364
Enumerated
Jun 18, 2008
Record last updated
May 9, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20180621000387); accepts Medicare assignment
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 diagnostic radiology physician records → All 1,700 in Minnesota → Look up another NPI →

Also registered at 400 East Third Street

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

  1. Maria Beaver, MDAnatomic Pathology & Clinical Pathology Physician1215256409
  2. Barbara Boehm, PSY.D, LPPsychologist1902052103
  3. Timothy Borden, D.O.Hospice and Palliative Medicine (Emergency Medicine) Physician1043416209
  4. Sarah Daggett, CPNPPediatric Nurse Practitioner1336304971
  5. Michele Davis, APRN, CNPAdult Health Nurse Practitioner1104250257
  6. Wilson GineteInterventional Cardiology Physician1922055607

Verify Chad James St. Germain in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 56430    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 Minnesota 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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Bills Medicare through one group practice

  1. The Duluth Clinic LtdDuluth, MN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Chad James St. Germain among 1,700 diagnostic radiology physician records in Minnesota

Chad James St. Germain, M.D. is one of 1,700 diagnostic radiology physician records with a practice address in Minnesota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 61% of them.

  • NPI issued2008 · 61% of these records are older, 35% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 78% of these records are
  • Graduated2008 · median 2003 among the 1,324 with a school on file
  • Record last updated2018 · 42% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in Minnesota

There are 1,700 diagnostic radiology physician records in Minnesota.

All 1,700 in Minnesota → Every provider in Duluth → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. David AlexanderDuluth, MN 558051932135936
  2. Michael Caldwell, MDDuluth, MN 558051952444010
  3. Bruce DeraufDuluth, MN 558051003847385
  4. Tammy FoxDuluth, MN 558051730247552
  5. Jill Holsinger, MDDuluth, MN 558051255431524
  6. Ningmei HuDuluth, MN 558051902821416
  7. Daniel MullinsDuluth, MN 558051255491445
  8. David Rideout, MDDuluth, MN 558051467404632

Common questions

What is Chad James St. Germain, M.D.'s NPI number?

Chad James St. Germain, M.D.'s National Provider Identifier (NPI) is 1609037035, issued on Jun 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Chad James St. Germain, M.D. located?

The NPPES record lists a practice address at 400 East Third Street, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.

How can I verify Chad James St. Germain, M.D.'s license?

NPPES lists Minnesota license number 56430, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. 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.

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.