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CATHERINE COSTA GARDYN PMHNP-BC, ANP
NPI 1447615992
Nurse Practitioner - Psychiatric/Mental Health in Cold Spring Harbor, NY

Active since December 29, 2015Opted out of Medicare · through Oct 23, 2027
64 WOODCHUCK HOLLOW RD, COLD SPRING HARBOR, NY 11724(516) 551-7112 Get Directions Write a Review

NPPES record last updated: December 31, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 31, 2025, Apr 25, 2024, Dec 29, 2015 (3 updates tracked since 2015).

About Catherine Costa Gardyn Pmhnp-bc, Anp NPPES

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

CATHERINE COSTA GARDYN PMHNP-BC, ANP (NPI 1447615992) is an individual psychiatric/mental health provider in Cold Spring Harbor, New York, licensed in New York (402096) and active in the NPI registry since December 2015. She has opted out of Medicare through October 23, 2027.

NPPES Registry Identity

NPI1447615992
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameCATHERINE COSTA GARDYNCredential: PMHNP-BC, ANP
Location Address64 WOODCHUCK HOLLOW RDCold Spring Harbor, NY 11724-2435
Mailing Address64 Woodchuck Hollow RdCold Spring Harbor, NY 11724-2435 · (516) 551-7112
Phone(516) 551-7112
Sole ProprietorYes
Enumeration DateDecember 29, 2015
Last NPPES UpdateDecember 31, 20253 updates tracked since enumeration
NPPES CertifiedDecember 31, 2025
✔ NPI 1447615992 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in NY · 402096
Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License 306698 (NY)
64 WOODCHUCK HOLLOW RD, Cold Spring Harbor, NY 11724
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Catherine Costa Gardyn Pmhnp-bc, Anp has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from October 23, 2023 through October 23, 2027.

Opt-Out Effective DateOctober 23, 2023
Opt-Out In Effect ThroughOctober 23, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11724 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
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 Catherine Costa Gardyn's NPI number?

The NPI number for Catherine Costa Gardyn is 1447615992. It was assigned to this individual provider in the NPPES registry on December 29, 2015.

Where is Catherine Costa Gardyn located?

Catherine Costa Gardyn practices at 64 Woodchuck Hollow Rd, Cold Spring Harbor, NY 11724. The listed phone number is (516) 551-7112.

What is Catherine Costa Gardyn's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Catherine Costa Gardyn enrolled in Medicare?

No. Catherine Costa Gardyn has opted out of Medicare through October 23, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Catherine Costa Gardyn was last updated on December 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.