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Leonard Treihaft Headshot
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  • Internal Medicine
Accepting new patients

Appointments: Call 516-846-4012


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2035 Lakeville Road Family and Internal Medicine

2035 Lakeville Road
New Hyde Park, NY 11040
United States

Clinical Expertise

  • AWV
  • Allergies
  • Annual physicals
  • Annual visit
  • Annual wellness visit
  • Anxiety
  • Behavioral health
  • Behavioral problems
  • Bronchitis
  • Chest pain
  • Cholesterol
  • Colds
  • Cough
  • Depression
  • Diet
  • Ear pain
  • Fatigue
  • Fever
  • Flu
  • Headache
  • High blood pressure
  • Hypertension
  • Immunizations
  • Lifestyle medicine
  • Lower back pain
  • Metabolic disorders
  • Metabolic syndrome management
  • Nutrition
  • PCP
  • PE
  • Pink eye
  • Premenopause symptoms
  • Preventative care
  • Prevention
  • Preventive visits
  • Primary Care
  • Primary Care Provider
  • Primary Care Providers
  • Screenings
  • Shortness of Breath
  • Sinusitis
  • Smoking Cessation
  • Sprains
  • Strains
  • Strep throat
  • Vaccinations
  • Vaccine
  • Vaccines
  • Well visits

New York Accepted Insurances

Always check with your health insurance carrier before scheduling any type of service. You can learn the details of your individual health insurance plan, including the amount of your copay, deductible, and coinsurance by visiting your health insurance company's website or by calling their customer service department. Click here to review our list of accepted insurance plans.

Aetna Medicare
Anthem BCBS
BCBS Blue Card
BCBS of NY – Empire
BCBS of NY – Empire Medicare
BCBS of NY - NYC Medicare Advantage Plus Plan
Corvel – Workers Compensation
Coventry – Workers Compensation and Motor Vehicle
Emblem Health – Emblem, HIP & GHI
Emblem Medicare
Emblem Health – NYC Medicare Advantage Plus Plan PPO
HealthFirst Commercial & PPO
HealthFirst Essential (Exchange)
HealthFirst Medicaid
HealthFirst Medicare
Humana Medicare
Multiplan/PHCS/Beech Street
New York Workers Compensation
Oxford Health Plans (Freedom, Liberty)
Oxford Health Medicare
Railroad Medicare
The Empire Plan NY
United Healthcare AARP Medicare Complete
United Healthcare Choice
United Healthcare Choice Plus
United Healthcare HMO
United Healthcare Medicare Advantage
United Healthcare Navigate EPO, HMO, POS
United Healthcare NYSHIP
United Healthcare POS
United Healthcare PPO

Training and Education

Board Certification

  • Diplomate, American Board of Internal Medicine


  • Chief Medical Resident, Long Island Jewish Medical Center, Campus of the Albert Einstein College of Medicine, New Hyde Park, NY
  • Medical Resident, Long Island Jewish Medical Center, New Hyde Park, NY

Medical School

  • MD, Internal Medicine, Albert Einstein College of Medicine, Bronx, NY


  • MA, Economics, George Washington University, Washington D.C


  • BA, Political Science, George Washington University, Washington D.C

About Me

Leonard Treihaft, MD is a member of Summit Health's Internal Medicine team. Dr. Treihaft is a board certified internal medical specialist with over 25 years of experience. He graduated from Albert Einstein College of Medicine in Bronx, NY in 1991. After graduating, he went on to complete an internal medicine residency at Long Island Jewish Medical Center in New Hyde Park, NY. During his initial residency, Dr. Treihaft was awarded Resident of the Year in 1994. He was subsequently appointed as the Chief Medical Resident at Long Island Jewish Medical Center. After his time as Chief Medical Resident, he started his own practice before joining the doctors at North Shore Medical Group and then Summit Health.

Dr. Treihaft has professional affiliations with NYU Hospitals, North Shore University Hospital, Manhasset, and Long Island Jewish Medical Center, in New Hyde Park, NY.

When he is not working with his patients, Dr. Treihaft enjoys playing guitar, tennis, and biking.