Summary

Dr. Catherine Alonzo sees patients at Greenwich Hospital, where she practices urology. She has 23 years of experience and completed her residency at New York Medical College. Dr. Alonzo practices in Greenwich, Connecticut, and sees patients in English and Spanish. Patients on Vitals rate Dr. Alonzo 4.33 out of 5.

Overview based on verified provider data

Quick Facts

  • 4.3
  • 23 years of experience
  • speaks English, Spanish
  • New York Medical College
  • 3 written reviews
  • 1 specialty
  • 10 areas of expertise
  • 1 hospital affiliation
  • 2 office locations
  • Female

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Catherine Michels Alonzo has 2 locations

Greenwich Urological Associates Pc

49 Lake AveGreenwich, CT 06830
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Greenwich Hospital

5 Perryridge RdGreenwich, CT 06830

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Dr. Catherine Michels Alonzo, MD
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Dr. Catherine Michels Alonzo, MDAntoinette Berkeley-Gsegnet, MDGregory A Joice, MDDavid A. Green, MD
UrologyUrologyUrologyUrology
Accepts New Patients Accepts New Patients
4.3 
3.4 
0 
0 
23 Years of Experience 33 Years of Experience 12 Years of Experience 21 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English, Spanish Speaks English
Greenwich , CTCortlandt Manor , NYNew York , NYFresh Meadows , NY
Med School: Drexel University College Of Medicine Med School: New York Medical College Med School: Columbia University College Of Physicians & Surgeons Med School: Mount Sinai School of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Catherine Michels Alonzo

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Catherine Michels Alonzo has the following specialty

Specialty Expertise

Dr. Catherine Michels Alonzo has the following 10 areas of expertise

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

Certifications, License, & Education

23 Years Experience

Dr. Catherine Michels Alonzo holds an expired medical license in the state of Connecticut.

Medical License

Medical Doctor with an expired medical license in the state of Connecticut that expired in 2026.

Education & Training

Residency

Completed their residency at New York Medical College.

Medical School

Graduated from Drexel University College Of Medicine in 2003.

NPI Number

Dr. Alonzo's NPI number is 1770802357.

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Frequently Asked Questions

Does Dr. Catherine Alonzo accept virtual/telehealth appointments?
Dr. Catherine Alonzo has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. Catherine Alonzo accepting new patients?
Dr. Catherine Alonzo has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Catherine Alonzo accept my insurance?
You can see the insurance plans that Dr. Catherine Alonzo accepts on their Vitals profile.
What languages does Dr. Catherine Alonzo speak?
Dr. Catherine Alonzo speaks English and Spanish.
How can I make an appointment with Dr. Catherine Alonzo?
You can find contact information for Dr. Catherine Alonzo here on Vitals.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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