Summary

Dr. Stefan Karos is a urologist who also specializes in surgery, bringing four decades of medical experience to his practice. He earned his medical degree from Rutgers New Jersey Medical School and completed his residency at UMDNJ. His extensive career has focused on treating conditions affecting the urinary system and male reproductive health. Dr. Karos speaks both English and Spanish, helping him connect with a diverse patient population.

Dr. Karos maintains hospital affiliations with Nashoba Valley Medical Center and Athol Hospital, with practice locations in Leominster and Athol, Massachusetts. He treats patients with kidney stones, enlarged prostate, and bladder cancer. His surgical expertise includes placing ureteral stents to help kidney stones pass, performing cystoscopy to examine the bladder, and conducting laparoscopic procedures using minimally invasive techniques. Patients have given Dr. Karos an average rating of 2.9 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 2.9
  • 40 years of experience
  • 20 insurance plans accepted
  • speaks English, Spanish
  • Umdnj
  • 17 written reviews
  • 2 specialties
  • 9 areas of expertise
  • 2 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Flexible scheduling

Office Locations

Dr. Stefan Karos has 4 locations

Karos Stefan Office

50 Memorial Dr Ste 104Leominster, MA 01453
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Stefan Karos, MD, PC

50 Memorial DrLeominster, MA 01453

Umass Memorial Health Alliance-Clinton Hospital

60 Hospital RdLeominster, MA 01453

Athol Hospital

2033 Main StAthol, MA 01331

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Dr. Stefan Karos, MDEileen TaylorDr. Donald George Astorian, MDDr. Katharine Anne Griffey, MD
UrologyUrologyAnesthesiologyInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
2.9 
40 Years of Experience 43 Years of Experience 39 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks Arabic, Spanish Speaks English, Spanish Speaks English, Spanish
Leominster , MASalem , NHDerry , NHWorcester , MA
Med School: Rutgers New Jersey Medical School Med School: Boston Univ Sch Med Bost Med School: Georgetown University School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Stefan Karos

  • Accepts Medicare
  • Accepts Medicaid
  • AARP
  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • Cigna
  • Commonwealth Care Alliance
  • Fallon Community Health Plan (FCHP)
  • Fallon Community Health Plan (FCHP) - HMO
  • Fallon Community Health Plan (FCHP) - Medicare (Advantage HMO)
  • Harvard Pilgrim Health Care
  • Johns Hopkins Employer Health Programs
  • Mass General Brigham Health Plan
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Tufts Health Plan
  • UnitedHealthcare
  • UnitedHealthcare - PPO
  • UnitedHealthcare Oxford
  • US Family Health Plan

Medical Specialties

Dr. Stefan Karos has the following 2 specialties

Specialty Expertise

Dr. Stefan Karos has the following 9 areas of expertise

  • Bladder Issues
  • Calculi (Stones)
  • Erectile Dysfunction (ED)
  • Kidney Stones
  • Overactive Urinary Bladder
  • Prostate Cancer
  • Prostatitis
  • Surgery
  • Urologic Emergencies

Certifications, License, & Education

40 Years Experience

Dr. Stefan Karos holds an active medical license in the state of Massachusetts.

Medical License

Medical Doctor with an active medical license in the state of Massachusetts that expires in 2027.

Education & Training

Residency

Completed their residency at Umdnj.

Medical School

Graduated from Rutgers New Jersey Medical School in 1986.

NPI Number

Dr. Karos' NPI number is 1376530378.

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Frequently Asked Questions

Which hospitals is Dr. Stefan Karos affiliated with?
Dr. Stefan Karos is affiliated with Nashoba Valley Medical Center and Athol Hospital.
What languages does Dr. Stefan Karos speak?
Dr. Stefan Karos speaks English and Spanish.
Does Dr. Stefan Karos accept my insurance?
You can see the insurance plans that Dr. Stefan Karos accepts on their Vitals profile.
Is Dr. Stefan Karos accepting new patients?
Dr. Stefan Karos is accepting new patients on Vitals. View Dr. Stefan Karos's profile on Vitals to make an appointment.
Does Dr. Stefan Karos accept virtual/telehealth appointments?
Dr. Stefan Karos has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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