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About Dr. James D. Duncan
Background and practice information
Dr. James D. Duncan is an internal medicine physician with over 29 years of clinical experience serving patients in the Lexington, KY area. He completed his medical training at University Of Kentucky College Of Medicine and has been in practice since 1997. He currently practices at Kentuckyone Health Medical Group Inc.
Dr. James D. Duncan's clinical practice focuses on treating patients with hypothyroidism (underactive thyroid), high cholesterol, nerve pain and seizures, and related conditions. In addition to internal medicine, he also specializes in hospitalist.
Dr. James D. Duncan is in-network with 8 insurance providers, including Aetna, Cigna, Humana, and 5 more. Patients are encouraged to verify coverage with his office before scheduling an appointment.
Additional specialties: Hospitalist
At a Glance
Education
Are you Dr. Duncan?
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Claim this profilePractice Locations
1 location
Kentuckyone Health Medical Group Inc
Primary3581 Harrodsburg Rd
Lexington, KY 40513
(859) 313-3400
Affiliations
Hospital and facility affiliations
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Treatment & Experience
Clinical practice and procedure experience for Dr. James D. Duncan
Services & Procedures
Dr. James D. Duncan's clinical practice encompasses office visits, hospital care, nursing facility care, and 2 other areas of care. Based on Medicare utilization data, Dr. James D. Duncan has provided a substantial volume of services, reflecting an active and established practice in internal medicine.
Office Visits
237 servicesDr. James D. Duncan provides patient consultations ranging from routine follow-ups to comprehensive evaluations, with follow-up visit being a key part of his practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 70% below the billed amount.
Hospital Care
70 servicesDr. James D. Duncan manages inpatient hospital care including admissions, daily rounds, critical care, and discharge coordination, with nursing facility admission being a key part of his practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 49% below the billed amount.
Nursing Facility Care
679 servicesDr. James D. Duncan provides ongoing medical oversight for patients in nursing facilities, including nursing facility visit and nursing facility discharge day management, 30 minutes or less. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 53% below the billed amount.
Preventive Care
71 servicesDr. James D. Duncan delivers preventive health services including wellness visits, vaccinations, and health screenings, including annual wellness visit and flu vaccine. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 52% below the billed amount.
Diagnostic Testing
32 servicesDr. James D. Duncan orders and interprets diagnostic tests to support clinical decision-making, with hemoglobin A1c test being a key part of his practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 52% below the billed amount.
Treatment Approach
Dr. James D. Duncan's treatment approach includes prescribing Levothyroxine Sodium, Atorvastatin Calcium, Gabapentin for his patients. These medications are commonly used for treating hypothyroidism (underactive thyroid), high cholesterol, nerve pain and seizures. He prescribing profile reflects experience across a wide range of treatments, addressing multiple aspects of patient care within his specialty. Dr. James D. Duncan has treated a significant number of Medicare patients, demonstrating an established practice in this area.
Source: CMS Medicare Provider Utilization and Payment Data, 2023.
Insurance Networks
Accepted insurance plans and networks
Dr. James D. Duncan accepts 39 plans from 8 insurers, including Cigna, Humana, Aetna.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Financial Transparency
Industry payment disclosures
Pharmaceutical and medical device companies disclosed $456 in payments to Dr. James D. Duncan in 2024, primarily from ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) for food and beverage. These disclosures are required by federal law under the Physician Payments Sunshine Act.
Top Paying Companies
Source: CMS Open Payments, 2024.
Patient Reviews
Reviews and ratings from patients
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About Internal Medicine
Specialty overview and common conditions
An internal medicine physician (internist) is a medical doctor who specializes in the prevention, diagnosis, and treatment of diseases in adults. Internists are trained to manage complex, chronic, and multi-system illnesses, often serving as primary care doctors for adults or as consultants to other...
Common conditions treated by internal medicine specialists:
- Type 2 Diabetes Mellitus
- Hypertension (High Blood Pressure)
- Hyperlipidemia (High Cholesterol)
- Coronary Artery Disease (Heart Disease)
Frequently Asked Questions
Common questions about James D. Duncan
Does Dr. Duncan accept Medicare?
Yes, Dr. Duncan accepts Medicare assignment. Patients with Medicare coverage can see Dr. Duncan and typically pay less out of pocket when using a provider who accepts Medicare assignment.
What insurance does Dr. Duncan accept?
Dr. Duncan is in-network with 8 insurance providers, including Aetna, Cigna, Humana, Medicare, Molina Healthcare, and 3 more. Insurance networks can change, so patients should verify their specific plan coverage directly with Dr. Duncan's office before scheduling.
Does Dr. Duncan offer telehealth or virtual appointments?
Yes, Dr. Duncan offers telehealth services, allowing patients to have virtual consultations from the comfort of their home. Contact the office to schedule a telehealth appointment.
What conditions does Dr. Duncan treat?
As a internal medicine specialist, Dr. Duncan commonly treats conditions including type 2 diabetes mellitus, hypertension (high blood pressure), hyperlipidemia (high cholesterol), coronary artery disease (heart disease), chronic obstructive pulmonary disease (copd), and other related health concerns. Contact the office to discuss your specific healthcare needs.
What medications does Dr. Duncan commonly prescribe?
Based on Medicare prescribing data, Dr. Duncan commonly prescribes medications including Levothyroxine Sodium, Atorvastatin Calcium, Gabapentin. The specific medications prescribed depend on each patient's individual diagnosis and health needs. Patients should discuss treatment options directly with Dr. Duncan during their consultation.
Where did Dr. Duncan go to medical school?
Dr. Duncan completed medical training at University Of Kentucky College Of Medicine and has been practicing since 1997, bringing over 29 years of clinical experience.
Where is Dr. Duncan's office located?
Dr. Duncan practices at 3581 HARRODSBURG RD, Lexington, KY 40513 at KENTUCKYONE HEALTH MEDICAL GROUP INC. You can reach the office by calling (859) 313-3400.
How do I make an appointment with Dr. Duncan?
To schedule an appointment with Dr. Duncan, call the office at (859) 313-3400. New patients should have their insurance information and medical records ready when calling.
Data source: CMS National Provider Registry ·
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Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice. Learn more about our editorial standards