Mark Eisner, MD
Gastroenterology Internal Medicine
Mark Eisner is a Gastroenterology Internal Medicine specialist based in Zephyrhills, FL with over 41 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Mark Eisner, MD has been part of the Zephyrhills medical community since 2006 in group practice. A George Washington University School of Medicine graduate since 1985, he brings 41+ years of experience. He regularly sees Medicare patients with hypertension, high cholesterol, and arthritis (per CMS claims data).
Older · 1733dNPPES updated 2021-08-25 · verify NPI on CMS · Verify license at Florida Board of Medicine
Contact & Location
Practice Location
38135 Market Square, Zephyrhills, FL 33542
How Does This Doctor Compare?
Medicare Patients
491
Unique beneficiaries
Standard volumePrescription Recipients
883
Patients prescribed
Prescriptions Written
2,464
Total claims
Total Medicare drug cost: $948k
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
Elevated cholesterol or triglycerides that increase heart disease risk
Joint inflammation causing pain, swelling, and stiffness
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
A condition where the body cannot properly regulate blood sugar levels
Excessive worry or fear that interferes with daily life
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$2.6k received from industry
146 transactions reported in 2024 ·Moderate 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 2024, attributed to Mark Eisner's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1985
George Washington University School of Medicine and Health Sciences
Board certified · Aug 24, 2021
Self-reported via NPPES
41 years in practice
Senior practitioner
Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.
Taxonomy: 207RG0100X
Education & Training
George Washington University School of Medicine (Class of 1985)
Primary hospital affiliation: Psychiatric
CMS Certification Number: 504004
View hospital on Medicare Care CompareVirtual Internal Medicine Care With Mark Eisner
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Eisner for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Zephyrhills 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 Eisner
Dr. Eisner is listed as active in the NPI registry with telehealth listed in Zephyrhills, FL. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (813) 780-7534.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Mark Eisner
Practice Location
38135 Market Square, Zephyrhills, FL 33542
Mailing Address
38135 Market Square, Zephyrhills, FL 33542
This is a provider directory. Contact the office directly to schedule appointments.
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