Katharine Castillo, FNP
5.0(35 reviews)
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Office Hours

  • Mon:7:00am - 5:00pm
  • Tue:7:00am - 5:00pm
  • Wed:7:00am - 5:00pm
  • Thu:7:00am - 5:00pm
  • Fri:7:00am - 5:00pm

Katharine Castillo, FNP
Nurse Practitioner - Family

Biography

Katharine Castillo, FNP is a Nurse Practitioner - Family practicing in Tucson, AZ

She has not yet shared a personalized biography with Doctor.com.

Featured Review See More Reviews

Katherine Castillo is very caring and compassionate.…

Anonymous

Summary

Specialties

Languages Spoken
English
Medical Specialties
  • Nurse Practitioner - Sub-Specialty: Family

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5.0
Number of Reviews: 35
Most Recent Review: 10/31/2026
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Office & Staff Evaluation 5.0

Ease of Getting an Appointment 5.0
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere Not rated
Handling of Billing Matters Not rated
Average Wait Time Not Rated

Provider Evaluation 5.0

Listening Skills 5.0
Clear Explanations 5.0
Trust in Decision Making 5.0
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Verified Patient

“Katherine Castillo is very carin...”

Katherine Castillo is very caring and compassionate.

Anonymous 10/31/2026
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Verified Patient

“FNP Castillo has been my Primary...”

FNP Castillo has been my Primary Care Provider for many years, and I have been a patient at Carondelet Medical Group for over 26 years. Katharine is a delight to work with and is very dedicated to her patients' care. She has helped me with numerous health issues over the years and is always proactive and caring.

Anonymous 10/25/2026
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Verified Patient

“Excellent listenerOverall outsta...”

Excellent listenerOverall outstanding service

Anonymous 09/23/2026
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Verified Patient

“I've recommend multiple people t...”

I've recommend multiple people to see Katherine.

Anonymous 08/17/2026
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Verified Patient

“My years with Dr CASTILLO HAVE B...”

My years with Dr CASTILLO HAVE BEEN GREAT

Anonymous 07/18/2026
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Verified Patient

“It's too bad that you don't have...”

It's too bad that you don't have a choice to put excellent, that's what it is been!

Anonymous 10/30/2026
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Verified Patient

“Katie Castillo NP is caring, sma...”

Katie Castillo NP is caring, smart, well connected to providers in town.

Anonymous 10/04/2026
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Verified Patient

“Professional NP Katie Castillo -...”

Professional NP Katie Castillo - listened, gave insight, and recommended meds.

Anonymous 09/07/2026
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Verified Patient

“Katharine Castillo is very empat...”

Katharine Castillo is very empathetic and listens. I really appreciate her thoughtfulness.

Anonymous 07/29/2026
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Verified Patient

“Perfect...”

Perfect

Anonymous 06/02/2026
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Locations

Affiliated Practices

Practice Colleagues

Chadi Berjaoui, MD   -   Family Medicine Physician
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Cynthia Diaz, FNP-C   -   Nurse Practitioner
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David Los, DO   -   Family Medicine Physician
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Procedures & Services

Procedures & Treatments Offered

    Commonly Prescribed Medications

    Katharine Castillo, FNP has not yet listed the medications that she commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    Katharine Castillo, FNP has not yet specified the insurance plans she accepts.