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  • Cardiovascular Disease, Internal Medicine
  • Accepting new patients
  • 59 years of experience
  • Grenzer Louis A Office 8118 Philadelphia Rd, Rosedale, MD 21237
  • (443) 353-9545

Brief Intro

Dr. Grenzer graduated from the University of Maryland School of Medicine,University of Maryland School of Medicine in 1966. He works in Rosedale, MD and 3 other locations and specializes in Cardiovascular Disease and Internal Medicine. Dr. Grenzer is affiliated with MERCY MEDICAL CENTER.

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Education Background

RESIDENCY

Mercy Hospital And Medical Center

MEDICAL SCHOOL

University Of Maryland School Of Medicine

University Of Maryland School Of Medicine - 1966

Languages Spoken

  • English

Location & Hours

  • Grenzer Louis A Office
  • 8118 Philadelphia Rd, Rosedale, MD 21237
  • Mon:8:30 am - 4:30 pm
    Tue:8:30 am - 4:30 pm
    Wed:8:30 am - 4:30 pm
    Thu:8:30 am - 4:30 pm
    Fri:8:30 am - 4:30 pm
    Sat:Closed
    Sun:Closed

Specialties Treated

  • Cardiovascular Disease
  • Internal Medicine

Conditions Addressed

  • Cardiac Arrhythmia
  • Mitral Regurgitation
  • Aortic Valvular Disease
  • Angina Pectoris
  • Mitral Valvular Disease
  • Cardiomyopathy
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Insurance Accepted

* Insurance information may change frequently. Please verify directly with the provider (doctor/clinic).

  • Aetna
  • CareFirst Blue Cross Blue Shield
  • Medicare
  • Cancer 16
  • Cardiology, Heart & Vascular Surgery 9
  • Orthopedics 27
  • Neurology & Neurosurgery 18
  • Gastroenterology & GI Surgery 26
  • Pulmonology & Lung Surgery 30
  • Diabetes & Endocrinology 25
  • Children's Hospital 5
  • Urology 24
  • Psychiatry 11
  • Geriatrics 29
  • Rehabilitation 5
  • Obsterics & Gynecology 10
  • Ophthalmology 1
  • Ear, Nose & Throat 3
  • Rheumatology 1
  • Long Term Care 2
  • Maternity Care (Uncomplicated Pregnancy) 21