Mark Douglas Duncan, M.D.
Mark Douglas Duncan is a Surgery specialist based in Baltimore, MD with over 39 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Mark Douglas Duncan, M.D. has practiced surgery for 39+ years, working in group practice. Trained at Mayo Medical School (class of 1987), he has been practicing for over 39 years. Among his Medicare patients, common conditions include hypertension, high cholesterol, and arthritis (per CMS data).
Older · 4855dNPPES updated 2013-02-06 · verify NPI on CMS · Verify license at Maryland Board of Physicians
How Does This Doctor Compare?
MIPS Score
202374.4/100
Maryland avg: 77.8 · US avg: 83.6
⚠ Lower than most doctors nationally(-9.2 pts)
How the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Medicare Patients
126
Unique beneficiaries
Standard volumePercentile rankings compared against 2,391 reporting peers in Maryland.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+4%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+9%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+8%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↑ More patients than average (+1%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-5%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
Patient Reviews
No patient reviews yet. If you've seen Mark Douglas Duncan, your feedback helps other patients.
Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →
Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1987
Mayo Clinic Alix School of Medicine
39 years in practice
Senior practitioner
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Taxonomy: 208600000X
Education & Training
Mayo Medical School (Class of 1987)
Mailing address
Po Box 64563, Baltimore, MD 21264-4563
Differs from practice location
Virtual Surgery Care With Mark Douglas Duncan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Douglas Duncan for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Baltimore required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Mark Douglas Duncan
Dr. Duncan is listed as active in the NPI registry with telehealth listed in Baltimore, MD. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (410) 550-0400.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Physician Comparator. See Data Methodology.
Is this your profile?
Verify credentials, update practice details, and manage telehealth.
Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Mark Douglas Duncan
Practice Location
4940 Eastern Ave, Baltimore, MD 21224-2735
Mailing Address
Po Box 64563, Baltimore, MD 21264-4563
This is a provider directory. Contact the office directly to schedule appointments.
Related Providers