Summary

Dr. Stefan Karos is a urologist and surgeon with four decades of experience treating conditions of the urinary system and male reproductive health. He earned his medical degree from Rutgers New Jersey Medical School and completed his residency at UMDNJ. His extensive background in urology allows him to address a wide range of urological concerns with expertise gained over 40 years of practice. Dr. Karos is fluent in both English and Spanish.

Dr. Karos maintains affiliations with Nashoba Valley Medical Center and Athol Hospital, with practice locations in Leominster and Athol, Massachusetts. He specializes in treating kidney stones, enlarged prostate, and complex stone conditions. His procedural expertise includes cystoscopy, which allows him to examine the bladder and urinary tract using a thin, flexible scope. Patients have given Dr. Karos an average rating of 2.9 on Vitals.

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 board certifications
  • 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, MD
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Dr. Stefan Karos, MDDr. Noah David-Kerman DonoghueDr. John D Urschel, MDDr. Nicholas A Sannella, MD
UrologyDiagnostic RadiologySurgerySurgery
Accepts New Patients
2.9 
3.7 
40 Years of Experience 8 Years of Experience 44 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish
Leominster , MAWORCESTER , MAWorcester , MAAndover , MA
Med School: Rutgers New Jersey Medical School Med School: Warren Alpert Medical School Of Brown University Med School: Univ Of Alberta Fac Of Med
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.
Does Dr. Stefan Karos accept my insurance?
You can see the insurance plans that Dr. Stefan Karos accepts on their Vitals profile.
What languages does Dr. Stefan Karos speak?
Dr. Stefan Karos speaks English and Spanish.
How can I make an appointment with Dr. Stefan Karos?
You can find contact information for Dr. Stefan Karos here on Vitals.
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.

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