James Harkless Duncan, D.O.
Family Medicine Physician · West Portsmouth, OH
James Harkless Duncan, D.O. is a family medicine physician with a practice address in West Portsmouth, Ohio, and NPI 1235216847, issued on Nov 1, 2006. Check the license (Ohio 34-00-2558, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- James Harkless Duncan
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 34-00-2558 OH
34002558 OH
Self-reported in NPPES; status is on the state search - Practice location
- 22442 State Route 73, West Portsmouth, OH 45663
- Phone
- (740) 858-6656
- Enumerated
- Nov 1, 2006
- Record last updated
- Sep 11, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (740) 858-5413
- Medicaid ID
- 0335159 OH
- Medicare enrollment
- Enrolled (PECOS I20101007001367); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1976
- 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 22442 State Route 73
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah DuncanLicensed Practical Nurse1346513066
- Angela Occidental, FNP-CFamily Nurse Practitioner1306364500
- Madison Walker, APRN-CNPFamily Nurse Practitioner1497407001
Verify James Harkless Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34-00-2558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average family medicine physician in 2024
11,420 Medicare Part D claims for 404 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 720 claims were for opioids.
Most prescribed
- Levothyroxine Sodium473 claims
- Hydrocodone-Acetaminophen429 claims
- Lisinopril406 claims
- Atorvastatin Calcium363 claims
- Pantoprazole Sodium297 claims
- Gabapentin270 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 MIPS final score for 2023 (Medicare payment program): 82.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $61.90
2 payments; by number, the most common kind was food and beverage; the largest payer was Antares Pharma, 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.
James Harkless Duncan among 5,606 family medicine physician records in Ohio
James Harkless Duncan, D.O. 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 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 48% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1976 · median 2005 among the 3,510 with a school on file
- Record last updated2018 · 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).
2 family medicine physician records list a practice address in West Portsmouth
They are 2 of the 110 NPPES records with a practice address in West Portsmouth, and 5,606 family medicine physician records in Ohio.
All 5,606 in Ohio → Every provider in West Portsmouth → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Paul Ramey, DOWest Portsmouth, OH 456631598320129
- Christopher AvilesPortsmouth, OH 456621265521066
- Daren Barker, MDPortsmouth, OH 456621194957902
- Rutmann DesaugustePortsmouth, OH 456621932729852
- David Hanzel, M.D.New Boston, OH 456621063579712
- Leonard Otworth, D.O.Portsmouth, OH 456621841678109
- Jessica Powell, DOPortsmouth, OH 456621386893832
- Scott Roberts, D.O.Portsmouth, OH 456621851755904
Common questions
What is James Harkless Duncan, D.O.'s NPI number?
James Harkless Duncan, D.O.'s National Provider Identifier (NPI) is 1235216847, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Harkless Duncan, D.O. located?
The NPPES record lists a practice address at 22442 State Route 73, West Portsmouth, OH, 45663. Phone: (740) 858-6656. Providers update this record themselves, so call before visiting.
How can I verify James Harkless Duncan, D.O.'s license?
NPPES lists Ohio license number 34-00-2558, 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 James Harkless Duncan, D.O. prescribe under Medicare Part D?
In 2024, James Harkless Duncan, D.O. had 11,420 Medicare Part D claims for 404 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is James Harkless Duncan, D.O.'s MIPS final score?
The 2023 MIPS final score is 82.8 of 100. 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.