Stephen M. Koller, MD
Diagnostic Radiology Physician · Middlebury, VT
Stephen M. Koller, MD is a diagnostic radiology physician with a practice address in Middlebury, Vermont, and NPI 1538197421, issued on Jun 29, 2006. Check the license (Vermont 042-0009220, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Stephen M. Koller
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 042-0009220 VT
Self-reported in NPPES; status is on the state search - Practice location
- 115 Porter Dr, Middlebury, VT 05753
- Phone
- (802) 388-8851
- Enumerated
- Jun 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 0VN1562 VT
- Medicare enrollment
- Enrolled (PECOS I20090129000079); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 84 in Vermont → Look up another NPI →
Also registered at 115 Porter Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dragos Banu, M.D.Internal Medicine Physician1558659367
- Jordan Bedard, OTR/LOccupational Therapist1780478255
- Erica Belida, CRNACertified Registered Nurse Anesthetist1346429974
- Brian Calhoun, MDAnesthesiology Physician1649292814
- Brian Carlozzi, DOFamily Medicine Physician1003437898
- Carl Cobb, MDDiagnostic Radiology Physician1083650733
Verify Stephen M. Koller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 042-0009220Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
One hospital affiliation
- Porter Hospital IncMiddlebury, VT · Critical Access Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Stephen M. Koller among 84 diagnostic radiology physician records in Vermont
Stephen M. Koller, MD is one of 84 diagnostic radiology physician records with a practice address in Vermont. 71% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1991 · median 2004 among the 57 with a school on file
- Record last updated2007 · 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 Vermont 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 Vermont
There are 84 diagnostic radiology physician records in Vermont.
All 84 in Vermont → Every provider in Middlebury → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Carl Cobb, MDMiddlebury, VT 057531083650733
- Andrew Boyer, MDRutland, VT 057011487884953
- Jed Hummel, M.D.Rutland, VT 057011174889182
- Daniel Mitchell, M.D.Rutland, VT 057011194737833
- James Rademacher, M.D.Rutland, VT 057011093701104
- Trent Shelton, D.O.Rutland, VT 057011407002355
- Roshan Sivagnanam, M.D.Rutland, VT 057011679611552
- Richard Bennum, MDSt Johnsbury, VT 058191518066604
Common questions
What is Stephen M. Koller, MD's NPI number?
Stephen M. Koller, MD's National Provider Identifier (NPI) is 1538197421, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen M. Koller, MD located?
The NPPES record lists a practice address at 115 Porter Dr, Middlebury, VT, 05753. Phone: (802) 388-8851. Providers update this record themselves, so call before visiting.
How can I verify Stephen M. Koller, MD's license?
NPPES lists Vermont license number 042-0009220, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-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.
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.