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Guillermo Diaz, PMHNP-BCTherapist in Hicksville, NY

Guillermo Diaz, PMHNP-BC is a therapist at 185 W John St, Hicksville, NY 11801, ranked #14 of 566 therapists and counselors in Hicksville and rated 5.0 from 19 Google reviews. Open Monday to Saturday.

This profile is built from public listing data. Confirm the provider’s license, services, fees and availability with the practice before you book.

Hicksville, NYUpdated 0 paid placements in any rankingHow we rank

Call (646) 856-9971Website ↗

Key facts

Key facts about Guillermo Diaz, PMHNP-BC
Address185 W John St, Hicksville, NY 11801Get directions
Phone(646) 856-9971
Websitepsychdirectnyc.com
HoursMonday to Saturday: 8 AM – 8 PM
Google rating5.0 from 19 Google reviews

Specialties

Each specialty shows the evidence we matched it on.

Service area

Serves Hicksville and 11 towns within 15 miles: Jericho, New Cassel, Salisbury, Westbury, Levittown, Bethpage, Plainview, East Meadow, Syosset, North Bellmore and North Wantagh.

Based in Hicksville, NYView on map

Opening hours

Opening hours for Guillermo Diaz, PMHNP-BC
DayHours
Monday8 AM – 8 PMevening
Tuesday8 AM – 8 PMevening
Wednesday8 AM – 8 PMevening
Thursday8 AM – 8 PMevening
Friday8 AM – 8 PMevening
Saturday8 AM – 8 PMevening
SundayClosed
  • Open evenings (after 6 PM)
  • Open Saturdays
  • Open Sundays — no

Questions about Guillermo Diaz, PMHNP-BC

How is Guillermo Diaz, PMHNP-BC ranked in Hicksville?

Guillermo Diaz, PMHNP-BC is ranked #14 of 566 therapists and counselors in Hicksville by RP Score, with 73 out of 100 as of November 2026. The score weighs reputation, review volume, recency, availability, specialty focus, proximity, claimed profile and partnered. No business can pay to change its rank.

What are Guillermo Diaz, PMHNP-BC’s hours?

Guillermo Diaz, PMHNP-BC is open Monday to Saturday. Its listed hours are Monday to Saturday, 8 AM – 8 PM. On Saturdays it is open 8 AM to 8 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Guillermo Diaz, PMHNP-BC serve?

Serves Hicksville and 11 towns within 15 miles: Jericho, New Cassel, Salisbury, Westbury, Levittown, Bethpage, Plainview, East Meadow, Syosset, North Bellmore and North Wantagh. The list is based on the business's location and the usual service radius for therapy and counseling. Confirm your address is covered when you call.

What do Google reviews say about Guillermo Diaz, PMHNP-BC?

Guillermo Diaz, PMHNP-BC has a rating of 5.0 from 19 Google reviews. The RP Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Guillermo Diaz, PMHNP-BC?

Call Guillermo Diaz, PMHNP-BC on (646) 856-9971. The business is at 185 W John St, Hicksville, NY 11801. Its website is linked in the key facts on this page. Ask about fees, insurance and openings before you book a first session.

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Claiming is free. Correct your hours, specialties and service area. The RP Score is recalculated from corrected data; payment never changes it.

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Compare nearby therapists and counselors

Guillermo Diaz, PMHNP-BC compared with nearby businesses
BusinessRankRP ScoreGoogle ratingSaturdaySundayDistance away
Guillermo Diaz, PMHNP-BC (this business)—735.0 (19)YesNo
North Star Mental Health Counseling Services#12744.5 (8)YesYes1.0 mi
Ramirez Counseling Services#13735.0 (17)YesNo2.0 mi
Kyra Sposato NP, Nurse Practitioner in Psychiatry#15734.9 (338)YesNo3.8 mi

See all 566 ranked therapists and counselors in Hicksville