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Mark R. Lentz

Mark R. Lentz, MD

4.9144 ratings, 30 reviews

Internal Medicine

Video Visits Available
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Highlights

Age Groups Seen

  • Adult (18-65)
  • Adults over 65

Languages

  • English

Gender

Male

About Mark R. Lentz

Mark Lentz, MD, is an internal medicine physician who provides comprehensive care for adults. He’s passionate about supporting his patients’ long-term health and well-being through preventive care, chronic illness management and timely treatment of new or acute conditions — large or small.
With decades of experience, Dr. Lentz has developed deep clinical expertise in managing a wide range of adult health concerns, particularly chronic conditions such as arthritis, diabetes and heart disease. He also has a special interest in helping patients manage restless legs syndrome.
Originally from Indiana, Pennsylvania, Dr. Lentz earned his medical degree from Thomas Jefferson University and completed his residency at Allegheny General Hospital. He is a Fellow of the American College of Physicians, a recognition of his dedication to delivering the highest standard of care.
Dr. Lentz is known for his thoughtful, patient-first approach and his genuine desire to make a meaningful difference in the lives of those he serves.

Professional Memberships

American College of Physicians
Pennsylvania Medical Society

Locations

  1. Geisinger Danville - General Internal Medicine

Expertise

Education

  • Residency: Allegheny University Hospitals - Allegheny General, 1988
  • Doctor of Medicine: Jefferson Medical College of Thomas Jefferson Univ, 1985

Board Certifications

  • Internal Medicine: American Board of Internal Medicine

Insurance

Please contact your insurance carrier to get specific benefit information on what is covered at this location.
Search plans
  • Aetna - ActiveCare 1-HD
  • Aetna - ActiveCare 2
  • Aetna - ActiveCare Select
  • AETNA - Aetna (all commercial plans including HMO)
  • Aetna - Aetna Affordable Health Choices limited benefits insurance plan (SRC only)
  • Aetna - Aetna Basic HMO (available in CA only)
  • Aetna - Aetna Better Health Chip
  • Aetna - Aetna Choice POS (Aetna HealthFund)
  • Aetna - Aetna Choice POS (Open Access)
  • Aetna - Aetna Choice POS II (Aetna HealthFund)
  • Aetna - Aetna Choice POS II (Open Access)
  • Aetna - Aetna Choice POS II on the Altius Network
  • Aetna - Aetna Health Network Only (Open Access)
  • Aetna - Aetna Health Network Only (Open Access) on the Altius Network
  • Aetna - Aetna Health Network Option (Open Access)
  • Aetna - Aetna Health Network Option (Open Access) on the Altius Network
  • Aetna - Aetna HealthFund Aetna Health Network Only (Open Access)
  • Aetna - Aetna HealthFund Aetna Health Network Option (Open Access)
  • Aetna - Aetna HealthFund HMO (available in CA only)
  • Aetna - Aetna Select
  • Aetna - Aetna Signature Administrators (PPO)
  • Aetna - Behavioral Health Program
  • Aetna - Elect Choice EPO
  • Aetna - Elect Choice EPO (Open Access)
  • Aetna - Elect Choice EPO (Open Access) on the Altius Network
  • Aetna - Employee Assistance Program
  • Aetna - HCA Well Care (Levels 1, 2 and 3)
  • Aetna - HMO
  • Aetna - LM HealthWorks Plan
  • Aetna - Managed Choice (Open Access)
  • Aetna - Managed Choice (Open Access) on the Altius Network
  • Aetna - Managed Choice POS
  • Aetna - Medicare Advantage
  • Aetna - Medicare Open (Private Fee-for-Service)
  • Aetna - Medicare Plan (HMO)
  • Aetna - Medicare Plan (Open Access HMO)
  • Aetna - Medicare Plan (PPO)
  • Aetna - National Advantage Program
  • Aetna - Open Access (HMO)
  • Aetna - Open Access Aetna Select (Aetna Health Fund)
  • Aetna - Open Access Elect Choice EPO (Aetna Health Fund)
  • Aetna - Open Access Managed Choice POS (Aetna Health Fund)
  • Aetna - Open Choice PPO
  • Aetna - Open Choice PPO (Aetna Health Fund)
  • Aetna - Peak Preference HNOnly (Open Access) on the Altius Network
  • Aetna - Peak Preference HNOption (Open Access) on the Altius Network
  • Aetna - Premier Care Network
  • Aetna - QPOS
  • Aetna - Savings Plus of California
  • Aetna - Savings Plus of Florida (Brevard and Tampa)
  • Aetna - Savings Plus of Metro, NY
  • Aetna - Savings Plus of New Jersey
  • Aetna - Savings Plus of Ohio
  • Aetna - Savings Plus of Oklahoma
  • Aetna - Savings Plus of Southeast Pennsylvania
  • Aetna - Savings Plus of Tennessee
  • Aetna - Select (Open Access)
  • Aetna - Student Health Plans
  • Aetna - Traditional Choice Indemnity
  • Aetna - TRS-Care Networks
  • Aetna - Vitalidad Mexico con Aetna
  • Aetna - Vitalidad Plus California con Aetna
  • Aetna - Voluntary Plans
  • Aetna Better Health - PA: Children's Health Insurance Program (CHIP)
  • Aetna Better Health - PA: Medicaid
  • American Republic Insurance Company - First Health
  • American Republic Insurance Company - PHCS PPO
  • AmeriHealth Caritas Pennsylvania - AmeriHealth Caritas Medicaid
  • AmeriHealth Caritas Pennsylvania - AmeriHealth Caritas Medicare Advantage
  • AmeriHealth Caritas Pennsylvania - AmeriHealth Caritas PA Community Health Choices
  • Beacon Health Options - Behavioral Health Network
  • Beech Street - Complementary
  • Beech Street - Consumer Card
  • Beech Street - Limited Benefit Plan
  • Beech Street - Primary
  • Beech Street - Supplemental
  • BeechStreet - BeechStreet PPO (via InterGroup Services)
  • Berkshire Health Partners - Berkshire Health Partners
  • Blue Cross Blue Shield - Federal Employee Program - Basic Option
  • Blue Cross Blue Shield - Federal Employee Program - Standard Option
  • Blue Cross Blue Shield Federal Employee Program - Basic
  • Blue Cross Blue Shield Federal Employee Program - Standard
  • Capital Blue Cross - Blue Journey
  • Capital Blue Cross - HMO - Behavioral Health
  • Capital Blue Cross - HMO (Capital BlueCross and Federal Marketplace Plans)
  • Capital Blue Cross - PPO Choice 1
  • Capital Blue Cross - PPO Choice 2
  • Capital Blue Cross - SeniorBlue PPO
  • Capital Blue Cross/Capital Advantage Insurance Co. - Blue Card Participating Products
  • Capital Blue Cross/Capital Advantage Insurance Co. - Capital Blue Cross Traditional
  • Capital Blue Cross/Capital Advantage Insurance Co. - CHIP
  • Capital Blue Cross/Capital Advantage Insurance Co. - Comprehensive
  • Capital Blue Cross/Capital Advantage Insurance Co. - Federal Employee Program
  • Capital Blue Cross/Capital Advantage Insurance Co. - POS
  • Capital Blue Cross/Capital Advantage Insurance Co. - PPO
  • Capital Blue Cross/Capital Advantage Insurance Co. - Security (Medicare Supplement)
  • Capital Blue Cross/Capital Advantage Insurance Co. - SeniorBlue HMO
  • Capital Blue Cross/Capital Advantage Insurance Co. - Special Care
  • Christian HealthCare Ministries - Christian HealthCare Ministries
  • Cigna - Choice Fund Open Access Plus
  • Cigna - Choice Fund PPO
  • Cigna - Cigna Health Savings
  • Cigna - CIGNA HealthCare of Pennsylvania - Philadelphia
  • Cigna - CIGNA Managed Care Network of Central Pennsylvania
  • Cigna - CIGNA Managed Care Network of Pittsburgh Pennsylvania
  • Cigna - EPO
  • Cigna - Health Alliance Plan
  • Cigna - Health Savings
  • Cigna - Health Savings (all deductible levels)
  • Cigna - HMO Open Access
  • Cigna - Network Open Access
  • Cigna - Open Access (all deductible levels)
  • Cigna - Open Access Plan
  • Cigna - Open Access Plus
  • Cigna - Open Access Value (all deductible levels)
  • Cigna - Open Access Value Plan
  • Cigna - POS Open Access
  • CIGNA of Pennsylvania - CIGNA - HMO
  • CIGNA of Pennsylvania - CIGNA - PPO
  • CIGNA of Pennsylvania - CIGNA Sarbridge Choices
  • Cigna-HealthSpring - Cigna Healthspring Medicaid - MMAI
  • Cigna-HealthSpring - HMN
  • Cigna-HealthSpring - HMO
  • Cigna-HealthSpring - Illinois Integrated Care Program (Medicaid)
  • Cigna-HealthSpring - Medicare Advantage
  • Cigna-HealthSpring - PPO
  • Community Care Behavioral Health Organization - Behavioral Health
  • Coventry Health Care - CoventryOne National
  • Coventry Health Care - CoventryOne POS
  • Coventry Health Care - First Health
  • Delta Dental of Pennsylvania - PPO
  • Delta Dental of Pennsylvania - Premier
  • DentaQuest LLC - CHIP - Geisinger HealthPlan Product
  • Devon Health Services - All Other Health Plans
  • Employee Services Incorporated - EAP - Professional Services for clients of Employee Services Inc.
  • First Health (Coventry Health Care) - First Health Network PPO
  • Geisinger Health Plan - Aon Benefit Experience
  • Geisinger Health Plan - AtlantiCare
  • Geisinger Health Plan - Geisinger All-Access QHDHP HMO
  • Geisinger Health Plan - Geisinger Choices HMO
  • Geisinger Health Plan - Geisinger Choices PPO
  • Geisinger Health Plan - Geisinger Employee Plan
  • Geisinger Health Plan - Geisinger Funding Alternative All-Access QHDHP HMO
  • Geisinger Health Plan - Geisinger Funding Alternative Choices HMO
  • Geisinger Health Plan - Geisinger Funding Alternative Choices PPO
  • Geisinger Health Plan - Geisinger Funding Alternative Premier HMO
  • Geisinger Health Plan - Geisinger Funding Alternative Premier PPO
  • Geisinger Health Plan - Geisinger Health Plan
  • Geisinger Health Plan - Geisinger Marketplace Select HMO
  • Geisinger Health Plan - Geisinger Premier PPO
  • Geisinger Health Plan - Geisinger Student Health Plan
  • Geisinger Health Plan - GHP Extra
  • Geisinger Health Plan - GHP Family (Medical Assistance/Medicaid)
  • Geisinger Health Plan - GHP Kids (CHIP)
  • Geisinger Health Plan - GHP Solutions
  • Geisinger Health Plan - Gold Classic Advantage (HMO)
  • Geisinger Health Plan - Gold Heritage (HMO)
  • Geisinger Health Plan - Holy Spirit
  • Geisinger Health Plan - PEBTF Custom HMO, REHP Custom HMO
  • Geisinger Health Plan - UFCW 1776 H and W Fund - Wise Foods
  • Geisinger Health Plan - Wood-Mode, Inc. Employee Plan
  • Geisinger Healthplan - Geisinger All Access HMO
  • Geisinger Healthplan - Geisinger All Access PPO
  • Geisinger Healthplan - Geisinger All-Access Extra HMO
  • Geisinger Healthplan - Geisinger All-Access Extra POS
  • Geisinger Healthplan - Geisinger All-Access POS
  • Geisinger Healthplan - Geisinger All-Access QHDHP PPO
  • Geisinger Healthplan - Geisinger Extra PPO
  • Geisinger Healthplan - Geisinger Funding Alternative All- Access PPO
  • Geisinger Healthplan - Geisinger Funding Alternative All- Access QHDHP PPO
  • Geisinger Healthplan - Geisinger Funding Alternative All-Access Extra HMO
  • Geisinger Healthplan - Geisinger Marketplace All-Access HMO
  • Geisinger Healthplan - Geisinger Marketplace All-Access PPO
  • Geisinger Healthplan - Geisinger Marketplace All-Access QHDHP PPO
  • Geisinger Healthplan - Geisinger Marketplace All-Access Value
  • Geisinger Healthplan - Geisinger Marketplace Extra HMO
  • Geisinger Healthplan - Geisinger Marketplace Premier HMO
  • Geisinger Healthplan - Geisinger PPO
  • Geisinger Healthplan - Geisinger QHDHP PPO
  • Geisinger Healthplan - Geisinger Small Group ACA QHDHP POS
  • Geisinger Healthplan - Gold Classic 360 Rx (HMO)
  • Geisinger Healthplan - Gold Classic Advantage Rx (HMO)
  • Geisinger Healthplan - Gold Classic Complete Rx (HMO)
  • Geisinger Healthplan - Gold Classic Essential Rx (HMO)
  • Geisinger Healthplan - Gold Preferred Advantage Rx (PPO)
  • Geisinger Healthplan - Gold Preferred Complete Rx (PPO)
  • Geisinger Healthplan - Gold Preferred Enhanced Rx (PPO)
  • Geisinger Healthplan - Gold Secure Rx (HMO DSNP)
  • Health Net - National PPO - First Health
  • HighMark Blue Cross Blue Shield - Advance Blue
  • HighMark Blue Cross Blue Shield - AffordaBlue
  • HighMark Blue Cross Blue Shield - Balance Blue PPO
  • HighMark Blue Cross Blue Shield - Balance Blue PPO a Community Blue Flex Plan
  • HighMark Blue Cross Blue Shield - Balance PPO
  • HighMark Blue Cross Blue Shield - Balance PPO a Community Blue Flex Plan
  • HighMark Blue Cross Blue Shield - Balance PPO a Community Blue Plan
  • HighMark Blue Cross Blue Shield - BCBS EPO
  • HighMark Blue Cross Blue Shield - BCBS PPO
  • HighMark Blue Cross Blue Shield - CHIP
  • HighMark Blue Cross Blue Shield - ClassicBlue
  • HighMark Blue Cross Blue Shield - Community Blue EPO
  • HighMark Blue Cross Blue Shield - Community Blue Flex - PA Mountains Healthcare Region
  • HighMark Blue Cross Blue Shield - Community Blue Flex EPO
  • HighMark Blue Cross Blue Shield - Community Blue Flex Penn Highlands Region
  • HighMark Blue Cross Blue Shield - Community Blue Flex PPO
  • HighMark Blue Cross Blue Shield - Community Blue PPO
  • HighMark Blue Cross Blue Shield - Community Blue Premier Flex
  • HighMark Blue Cross Blue Shield - DirectBlue
  • HighMark Blue Cross Blue Shield - EPO Blue Total Health
  • HighMark Blue Cross Blue Shield - EPOBlue
  • HighMark Blue Cross Blue Shield - Flex PPO Total Health a Community Blue Plan
  • HighMark Blue Cross Blue Shield - Freedom Blue Medicare Advantage
  • HighMark Blue Cross Blue Shield - High Deductible PPO
  • HighMark Blue Cross Blue Shield - KeystoneBlue
  • HighMark Blue Cross Blue Shield - MedigapBlue
  • HighMark Blue Cross Blue Shield - PPO Blue Total Health
  • HighMark Blue Cross Blue Shield - PPOBlue
  • HighMark Blue Cross Blue Shield - PPOPlus
  • HighMark Blue Cross Blue Shield - SelectBlue
  • HighMark Blue Cross Blue Shield - ShortTermBlue
  • HighMark Blue Cross Blue Shield - Total Health Blue PPO
  • HighMark Blue Cross Blue Shield - Total Health Blue PPO a Community Blue Plan
  • HighMark Blue Shield - Commercial
  • HighMark Blue Shield - Community Blue HMO
  • HighMark Blue Shield - First Priority Health
  • HighMark Blue Shield - First Priority Life Insurance Company
  • HighMark Blue Shield - Freedom Blue
  • Horizon Blue Cross Blue Shield of New Jersey - Federal Employee Plan - Basic Option
  • Horizon Blue Cross Blue Shield of New Jersey - Federal Employee Plan - Standard Option
  • Integrated Behavioral Health - Behavioral Health
  • Integrated Health Plan Behavioral Health - Behavioral Health
  • Jefferson Health Plan - CHIP
  • Jefferson Health Plan - Medicaid
  • LIFE Geisinger - LIFE Geisinger
  • Magellan Behavioral Health - Behavioral Health Program
  • Managed Health Network, Inc. (MHN) - Health Net of the Northeast - HMO and POS
  • Managed Health Network, Inc. (MHN) - Health Net of the Northeast - PPO
  • Medicaid - Fee For Service (FFS)
  • Medicaid - Managed Care
  • Medicaid - Managed Long Term Services and Supports (MLTSS)
  • Medicaid - Medicaid
  • Medicaid - Medically Needy / Share of Cost
  • Medicare - Medicare
  • Memorial Hermann - MultiPlan
  • Memorial Hermann - PHCS
  • Mental Health Network (MHNet) - Behavioral Health Program
  • MHNet Behavioral Health - Commercial
  • Moda Health - PHCS
  • Multiplan PHCS - Multiplan
  • Multiplan PHCS - MultiPlan Complementary
  • Multiplan PHCS - MultiPlan Preventative Services Only
  • Multiplan PHCS - MultiPlan Specific Services
  • Multiplan PHCS - PHCS
  • Multiplan PHCS - PHCS Healthy Directions or Extended PPO
  • Multiplan PHCS - PHCS Limited Benefit Plan
  • Multiplan PHCS - PHCS Practioner Only
  • Multiplan PHCS - PHCS Preventative Service Only
  • Multiplan PHCS - PHCS Savility
  • Multiplan PHCS - ValuePoint by MultiPlan
  • Optum Veterans Affairs Community Care Network - Medicare
  • Oscar Health Insurance - Medicare
  • PA Health and Wellness - Ambetter
  • PA Health and Wellness - Community Health Choices
  • PA Health and Wellness - PA Community Health Choices
  • POMCO - POMCO-PHCS/Multiplan
  • Private Healthcare Systems - Private Healthcare Systems (PHCS) (PPO)
  • Tricare - TRICARE Extra - HealthNet Federal Services
  • Tricare - TRICARE For Life
  • Tricare - TRICARE Prime - HealthNet Federal Services
  • Tricare - TRICARE Reserve Select (TRS)
  • Tricare - TRICARE Select
  • Tricare - TRICARE Standard - HealthNet Federal Services
  • United Behavioral Health - United Behavioral Health
  • United Concordia Companies - FEP
  • United Concordia Companies - National Fee for Service
  • United Concordia Companies - PA CHIP
  • United Concordia Companies - ParNet/Advantage
  • UnitedHealthcare - PacifiCare Signature POS
  • UnitedHealthcare - UnitedHealthcare CHIP
  • UnitedHealthcare - UnitedHealthcare Commercial
  • UnitedHealthcare - UnitedHealthcare Community Plan
  • UnitedHealthcare - UnitedHealthcare Medicaid
  • UnitedHealthOne - UnitedHealthcare Navigate
  • UnitedHealthOne - UnitedHealthcare Navigate Plus
  • UPMC - UPMC for You Medicare Advantage
  • ValueOptions - ValueOptions
  • Workers Compensation - Workers Compensation a Campus of Geisinger Medical Center

Ratings & Reviews

4.9 out of 5

144 ratings, 30 reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions (shown below) from our independently conducted surveys (by Press Ganey Associates) sent to patients within two weeks after their visit with their care provider.

Explanations about your problem/condition
Concern shown for your questions/worries
Provider included you in decisions
Your confidence in care provider
Likelihood of recommending to others
CP discuss treatments
Search reviews
    5 out of 5 stars
    Reviewed on 3/11/2026

    DR Lentz always answers all my questions and addresses current health care issues but also ties in prevention to keep me healthy as I age.

    5 out of 5 stars
    Reviewed on 3/11/2026

    I felt Dr. Lentz listened to all my concerns, did not feel rushed and was very thorough. I left feeling heard, and very confident in his assessment and would recommend him to anyone. In fact, I already gave him a great review to my coworkers!

    5 out of 5 stars
    Reviewed on 3/4/2026

    Excellent physician

    5 out of 5 stars
    Reviewed on 3/4/2026

    Dr Lentz was fabulous!!!

    5 out of 5 stars
    Reviewed on 2/27/2026

    Dr. Mark Lentz has my complete confidence.

    5 out of 5 stars
    Reviewed on 2/25/2026

    Best PCP that I've ever had throughout my entire experience with Geisinger Clinics. I started with Geisinger in […], PA in 1982.

    5 out of 5 stars
    Reviewed on 2/2/2026

    Good

    5 out of 5 stars
    Reviewed on 1/28/2026

    I feel my care is in excellent hands.

    5 out of 5 stars
    Reviewed on 1/22/2026

    Dr Lentz is the best

    5 out of 5 stars
    Reviewed on 12/31/2025

    Dr.Lentz is awesome!

    5 out of 5 stars
    Reviewed on 12/28/2025

    I am very impressed with Doctor Mark Lentz.

    5 out of 5 stars
    Reviewed on 12/11/2025

    Dr. Lentz is very easy to talk to, describes care in ways I can understand.

    5 out of 5 stars
    Reviewed on 11/6/2025

    Dr Lentz is exceptional at answering questions. I never feel rushed and he explains everything in detail the way I can understand

    5 out of 5 stars
    Reviewed on 10/30/2025

    Dr.Lentz is an awesome caring and shows great concerns about my health all the time.

    3 out of 5 stars
    Reviewed on 10/28/2025

    I feel Dr. Lentz does care for his patients, However I feel that He doesn't have the time he needs to spend with his patients because Geisinger Is more focused on getting patients in and out so they can get more money.

    5 out of 5 stars
    Reviewed on 10/2/2025

    The best

    5 out of 5 stars
    Reviewed on 9/23/2025

    DrMark Lentz Is Wonderful And Is A GREAT ASSET TO Geisinger Medical Center!!!!!!!

    5 out of 5 stars
    Reviewed on 9/18/2025

    The staff are very" professional"they treat you like family .

    5 out of 5 stars
    Reviewed on 8/27/2025

    Dr Lentz is one of the most caring and forthright PCP that I've ever had!He personally follows-up with phone calls when a medical issue comes up following completion of lab tests and/or X-rays after an "in person" visit.

    5 out of 5 stars
    Reviewed on 8/13/2025

    Dr Lentz is among the best of the best. I'm extremely grateful to have him as my primary care physician. He listens and involves me in my care plan. I respect his opinion, he's very easy to speak with and I have the utmost confidence in his medical care.

    5 out of 5 stars
    Reviewed on 8/11/2025

    Dr Lentz has always been willing and caring about any concerns I have. He listens and discusses my concerns.

    5 out of 5 stars
    Reviewed on 7/24/2025

    Good

    5 out of 5 stars
    Reviewed on 7/10/2025

    Excellent thoroughness and care!!

    5 out of 5 stars
    Reviewed on 7/5/2025

    Excellent physician. Genuinely listens and cares. Doesn't "push" you through your appt.

    5 out of 5 stars
    Reviewed on 6/13/2025

    Dr.Lentz is excellent!

    5 out of 5 stars
    Reviewed on 6/11/2025

    Dr. Lent is knowledgeable, considerate and very professional. Excellent, excellent [...].

    5 out of 5 stars
    Reviewed on 6/11/2025

    Love Dr Lentz. He is one of the best

    5 out of 5 stars
    Reviewed on 5/26/2025

    Wonderful provider. He is very through and answers all my questions. He is approachable and caring .

    5 out of 5 stars
    Reviewed on 5/21/2025

    Dr Lentz is a model doctor. He is caring and informative.

    5 out of 5 stars
    Reviewed on 5/1/2025

    Dr.Lentz is the best