James C Mackenzie, MD

Internal Medicine

James C Mackenzie is an Internal Medicine specialist based in Troy, MI with over 55 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

James C Mackenzie, MD has been part of the Troy medical community since 2005. A Northwestern University Feinberg Medical School graduate since 1971, he brings 55+ years of experience. CMS Medicare data shows his patients commonly have high cholesterol and hypertension.

At a glance

  • Uses generic medications more than 76% of reporting doctors in Michigan
  • Virtual visits available — no app or travel required
1 of 920 Internal Medicine providers in MISee all Internal Medicine in Troy55+ years experienceNPI since 2005

Older · 6894dNPPES updated 2007-07-08 · verify NPI on CMS · Verify license at Michigan Board of Medicine

Contact & Location

Practice Location

1380 Coolidge Hwy Suite 100, Troy, MI 48084-7018

Fax: (248) 288-3900
CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.

Opioid Rx

↓ Lower = better

5.19%

Michigan avg: 5.3 · US avg: 5.1

Lower than most doctors nationally(+0.1 pts)

5.19% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Generic Rx

↑ Higher = better

91%

Michigan avg: 83.5 · US avg: 82.8

Higher than most doctors nationally(+8.2 pts)

Better than 76% of reporting doctors in Michigan

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

207

Unique beneficiaries

Standard volume

Prescription Recipients

407

Patients prescribed

Prescriptions Written

5,356

Total claims

Total Medicare drug cost: $412k

Percentile rankings compared against 1,194 reporting peers in Michigan.

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.

Patient Condition Panel

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 High Cholesterol, Hypertension, and Ischemic Heart Disease.

High Cholesterol
70%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%
Hypertension
Lower than avg (-4%)66%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↓ Fewer patients than average (-4%) — less common here

Ischemic Heart Disease
Lower than avg (-4%)28%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

US avg: 31.7%

↓ Fewer patients than average (-4%) — less common here

Diabetes
Lower than avg (-8%)26%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

↓ Fewer patients than average (-8%) — less common here

Arthritis
Lower than avg (-24%)25%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-24%) — less common here

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

Industry Payment Transparency

$114 received from industry

1 transaction reported in 2024 ·Low tier

View on CMS Open Payments →

Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.

Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to James C Mackenzie's NPI.

Patient Reviews

No patient reviews yet. If you've seen James C Mackenzie, 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.

Career Journey
  1. Graduated medical school · 1971

    Northwestern University Feinberg School of Medicine

  2. 55 years in practice

    Senior practitioner

Internal MedicineAllopathic & Osteopathic Physicians

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Taxonomy: 207R00000X

Education & Training

Northwestern University Feinberg Medical School (Class of 1971)

Virtual Internal Medicine Care With James C Mackenzie

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with James C Mackenzie for cholesterol management, blood pressure monitoring, follow-up consultations — no travel to Troy 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 James C Mackenzie

NPI records show Dr. Mackenzie as active with telehealth listed in Troy, MI. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (248) 288-4000.

Verified across 5 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.

Is this your profile?

Verify credentials, update practice details, and manage telehealth.

Claim Profile

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.

Related Providers

Internal Medicine in Michigan

See all