Mary Elizabeth Karis, CRNP
Mary Elizabeth Karis, CRNP has practiced nursing for 5+ years, working in independent practice. Among her Medicare patients, common conditions include high cholesterol, hypertension, and arthritis (per CMS data).
At a glance
- Uses generic medications more than 83% of reporting doctors in Pennsylvania
- Virtual visits available — no app or travel required
Older · 505dNPPES updated 2024-12-17 · verify on CMS
Contact & Location
Practice Location
300 E Main St, Hummelstown, PA 17036-1725
How Does This Doctor Compare?
Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.
Generic Rx
↑ Higher = better93.4%
Pennsylvania avg: 82.8 · US avg: 82.8
✓ Higher than most doctors nationally(+10.6 pts)
Better than 83% of reporting doctors in PennsylvaniaHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
83
Unique beneficiaries
Standard volumePrescription Recipients
431
Patients prescribed
Prescriptions Written
2,099
Total claims
Total Medicare drug cost: $150k
Percentile rankings compared against 3,764 reporting peers in Pennsylvania.
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 High Cholesterol, Hypertension, and Arthritis.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ 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%↓ Fewer patients than average (-3%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-11%) — less common here
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-12%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$393 received from industry
16 transactions reported in 2024 ·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 2024, attributed to Mary Elizabeth Karis's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Dec 16, 2024
CMS-verified certification date
5 years in practice
Established
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Taxonomy: 363L00000X
Mailing address
7 Dock Hill Rd, Middleburg, PA 17842-8910
Differs from practice location
Virtual Nursing Care With Mary Elizabeth Karis
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mary Elizabeth Karis for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Hummelstown 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 Mary Elizabeth Karis
Dr. Karis is listed as active in the NPI registry with telehealth listed in Hummelstown, PA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (717) 566-1100.
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 Mary Elizabeth Karis
Practice Location
300 E Main St, Hummelstown, PA 17036-1725
Mailing Address
7 Dock Hill Rd, Middleburg, PA 17842-8910
This is a provider directory. Contact the office directly to schedule appointments.
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