Gregory John Duellman, D.O.
Diagnostic Radiology Physician · Charlotte, NC
Gregory John Duellman, D.O. is a diagnostic radiology physician with a practice address in Charlotte, North Carolina, and NPI 1417029455, issued on Nov 14, 2006. Check the license (North Carolina 2007-00979, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory John Duellman
- Credential
- D.O.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 2007-00979 NC
34.008149 OH
Self-reported in NPPES; status is on the state search - Practice location
- 14121 Lissadell Cir, Charlotte, NC 28277
- Phone
- (704) 975-9730
- Enumerated
- Nov 14, 2006
- Record last updated
- Jun 20, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070919000851); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2002
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,389 in North Carolina → Look up another NPI →
Verify Gregory John Duellman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2007-00979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 92.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Gaston Radiology PAGastonia, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory John Duellman among 1,389 diagnostic radiology physician records in North Carolina
Gregory John Duellman, D.O. is one of 1,389 diagnostic radiology physician records with a practice address in North Carolina. 75% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 52% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2002 · median 2006 among the 998 with a school on file
- Record last updated2019 · 46% 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 North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
269 diagnostic radiology physician records list a practice address in Charlotte
They are 269 of the 23,603 NPPES records with a practice address in Charlotte, and 1,389 diagnostic radiology physician records in North Carolina.
All 1,389 in North Carolina → Every provider in Charlotte → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Kenneth Fox, MDCharlotte, NC 282771164439873
- Osmani Deochand, M.D.Fayetteville, NC 283011104212091
- Jonathan Yu, D.O.Fayetteville, NC 283011366731531
- David Allison, M.D.Fayetteville, NC 283041275536815
- Demir Bastug, M.D.Fayetteville, NC 283041447253075
- Fred Caruso, M.D.Fayetteville, NC 283041659374288
- Richard Falter, M.D.Fayetteville, NC 283041295730430
- Max Faykus, M.D.Fayetteville, NC 283041336142975
Common questions
What is Gregory John Duellman, D.O.'s NPI number?
Gregory John Duellman, D.O.'s National Provider Identifier (NPI) is 1417029455, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory John Duellman, D.O. located?
The NPPES record lists a practice address at 14121 Lissadell Cir, Charlotte, NC, 28277. Phone: (704) 975-9730. Providers update this record themselves, so call before visiting.
How can I verify Gregory John Duellman, D.O.'s license?
NPPES lists North Carolina license number 2007-00979, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Gregory John Duellman, D.O.'s MIPS final score?
The 2023 MIPS final score is 92.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.