Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

HANS CHRISTIAN CONTRERAS-AYALA
NPI 1568047298
Dentist - General Practice in North Haven, CT

Q: What is Hans Contreras-ayala's NPI number?

The NPI number for Hans Contreras-ayala is 1568047298. It was assigned to this individual provider in the NPPES registry on March 15, 2021.

Q: What is Hans Contreras-ayala's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Active since March 15, 2021PECOS Enrolled

21 WASHINGTON AVE STE C, NORTH HAVEN, CT 06473(203) 239-2356(203) 239-3985 Get Directions Write a Review

NPPES record last updated: September 15, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 15, 2026, Jun 14, 2021, Jun 2, 2021 and 1 more (4 updates tracked since 2021).

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About Hans Christian Contreras-ayala NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HANS CHRISTIAN CONTRERAS-AYALA (NPI 1568047298) is an individual general practice provider in North Haven, Connecticut, licensed in Connecticut (13334) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1568047298

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameHANS CHRISTIAN CONTRERAS-AYALA

Location Address21 WASHINGTON AVE STE CNorth Haven, CT 06473-2368

Mailing Address21 Washington Ave Ste CNorth Haven, CT 06473-2368 · (203) 239-2356 · Fax (203) 239-3985

Phone(203) 239-2356

Fax(203) 239-3985

Sole ProprietorNo

Enumeration DateMarch 15, 2021

Last NPPES UpdateSeptember 15, 20264 updates tracked since enumeration

NPPES CertifiedSeptember 15, 2026

✔ NPI 1568047298 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in CT · 13334

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 13089 (CT)

21 WASHINGTON AVE STE C, North Haven, CT 06473

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hans Christian Contreras-ayala is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06473 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$93.86 typical visit price

range $60.82 – $183.10

Typical copayment $23.46 (range $15.20 – $45.77)

Most-billed visit code 99203

Established Patient

$75.55 typical visit price

range $19.76 – $149.26

Typical copayment $18.88 (range $4.94 – $37.31)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Hans Contreras-ayala's NPI number?

The NPI number for Hans Contreras-ayala is 1568047298. It was assigned to this individual provider in the NPPES registry on March 15, 2021.

Where is Hans Contreras-ayala located?

Hans Contreras-ayala practices at 21 Washington Ave Ste C, North Haven, CT 06473. The listed phone number is (203) 239-2356.

What is Hans Contreras-ayala's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is Hans Contreras-ayala enrolled in Medicare?

Yes. Hans Contreras-ayala is registered in the Medicare PECOS enrollment system.

What insurance does Hans Contreras-ayala accept?

Health plans from Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 5 other insurers list Hans Contreras-ayala as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Hans Contreras-ayala was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.