Gary James Duncan, MD
Family Medicine Physician · Delaware, OH
Gary James Duncan, MD is a family medicine physician with a practice address in Delaware, Ohio, and NPI 1487150249, issued on Apr 2, 2018. Check the license (Ohio 35.141372, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Gary James Duncan
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 35.141372 OH
Self-reported in NPPES; status is on the state search - Practice location
- 454 W Central Ave, Delaware, OH 43015
- Phone
- (740) 369-1010
- Enumerated
- Apr 2, 2018
- Record last updated
- Sep 18, 2023
- Medicaid ID
- 355024 OH
- Medicare enrollment
- Enrolled (PECOS I20210811003438); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,606 in Ohio → Look up another NPI →
Also registered at 454 W Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gerald French, MDInternal Medicine Physician1710075510
- D Koehler, MDInternal Medicine Physician1316031594
Verify Gary James Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.141372Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average family medicine physician in 2024
1,568 Medicare Part D claims for 152 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium121 claims
- Levothyroxine Sodium87 claims
- Losartan Potassium75 claims
- Lisinopril68 claims
- Amlodipine Besylate60 claims
- Meloxicam45 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.3 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).
Industry payments in 2024: $46.57
3 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ohiohealth CorporationColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary James Duncan among 5,606 family medicine physician records in Ohio
Gary James Duncan, MD is one of 5,606 family medicine physician records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2018 · median 2005 among the 3,510 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 family medicine physician records list a practice address in Delaware
They are 29 of the 919 NPPES records with a practice address in Delaware, and 5,606 family medicine physician records in Ohio.
All 5,606 in Ohio → Every provider in Delaware → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Troy Fate, M.D.Delaware, OH 430151174514269
- Kevin Haney, M.D.Delaware, OH 430151235193194
- Mark Hickman, M.D.Delaware, OH 430151073516605
- Patricia Hubbell, MDDelaware, OH 430151255377172
- Thomas Hubbell, MDDelaware, OH 430151174552657
- Gerald Kremer, MDDelaware, OH 430151023076338
- Gary Meckler, MDDelaware, OH 430151265471262
- David Nardin, M.D.Delaware, OH 430151922007681
Common questions
What is Gary James Duncan, MD's NPI number?
Gary James Duncan, MD's National Provider Identifier (NPI) is 1487150249, issued on Apr 2, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gary James Duncan, MD located?
The NPPES record lists a practice address at 454 W Central Ave, Delaware, OH, 43015. Phone: (740) 369-1010. Providers update this record themselves, so call before visiting.
How can I verify Gary James Duncan, MD's license?
NPPES lists Ohio license number 35.141372, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary James Duncan, MD prescribe under Medicare Part D?
In 2024, Gary James Duncan, MD had 1,568 Medicare Part D claims for 152 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Gary James Duncan, MD's MIPS final score?
The 2023 MIPS final score is 81.3 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.