Mark R. Johnson, M.D.
Mark R. Johnson is a Nephrology Internal Medicine specialist based in Morristown, NJ with over 23 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
With over 23 years in internal medicine, Mark R. Johnson, M.D. is a long-established nephrologist in Morristown. Trained at New York University School of Medicine (class of 2003), he has been practicing for over 23 years. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and kidney disease.
At a glance
- Uses generic medications more than 76% of reporting doctors in New Jersey
- Virtual visits available — no app or travel required
Older · 5980dNPPES updated 2010-01-07 · verify NPI on CMS · Verify license at New Jersey State Board of Medical Examiners
Contact & Location
Practice Location
100 Madison Ave, Morristown, NJ 07960-6136
How Does This Doctor Compare?
Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.
Generic Rx
↑ Higher = better91.4%
New Jersey avg: 82.9 · US avg: 82.8
✓ Higher than most doctors nationally(+8.6 pts)
Better than 76% of reporting doctors in New JerseyHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
584
Unique beneficiaries
High volumePrescription Recipients
54
Patients prescribed
Prescriptions Written
186
Total claims
Total Medicare drug cost: $20k
Percentile rankings compared against 2,091 reporting peers in New Jersey.
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 Chronic Kidney Disease.
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
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+45%) — a focus area for this doctor
The heart cannot pump blood efficiently enough to meet the body's needs
US avg: 22.5%↑ More patients than average (+43%) — 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 (+32%) — 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 (+23%) — 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
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+30%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$255 received from industry
20 transactions reported in 2018 ·Low tier
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 2018, attributed to Mark R. Johnson's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2003
Nyu Grossman School of Medicine
23 years in practice
Experienced
Nephrologists treat kidney diseases including chronic kidney disease, kidney failure requiring dialysis, glomerulonephritis, kidney stones, and electrolyte disorders. They manage dialysis access and kidney transplant follow-up.
Taxonomy: 207RN0300X
Education & Training
New York University School of Medicine (Class of 2003)
Mailing address
Po Box 23831, Newark, NJ 07189-0831
Differs from practice location
Virtual Internal Medicine Care With Mark R. Johnson
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark R. Johnson for blood pressure monitoring, cholesterol management, kidney care follow-ups — no travel to Morristown 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 R. Johnson
Dr. Johnson is listed as active in the NPI registry with telehealth listed in Morristown, NJ. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (973) 971-7165.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2018 · CMS Physician Comparator. See Data Methodology.
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Contact Mark R. Johnson
Practice Location
100 Madison Ave, Morristown, NJ 07960-6136
Mailing Address
Po Box 23831, Newark, NJ 07189-0831
This is a provider directory. Contact the office directly to schedule appointments.
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