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OSCAR A GERDNER MD
NPI 1801209952
Psychiatry & Neurology - Child & Adolescent Psychiatry in Darien, CT

Active since June 06, 2014PECOS Enrolled
30 OLD KINGS HWY S, DARIEN, CT 06820(203) 349-8037(888) 751-6612 Get Directions Write a Review

NPPES record last updated: May 31, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 31, 2023, Jun 29, 2020 (2 updates tracked since 2020).

About Oscar A Gerdner Md NPPES

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

OSCAR A GERDNER MD (NPI 1801209952) is an individual child & adolescent psychiatry provider in Darien, Connecticut, licensed in Connecticut (60001) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1801209952
Entity TypeIndividualMale
Primary Taxonomy2084P0804X
Provider Legal NameOSCAR A GERDNERCredential: MD
Location Address30 OLD KINGS HWY SDarien, CT 06820-4551
Mailing Address30 Old Kings Hwy SDarien, CT 06820-4551 · (203) 349-8037 · Fax (888) 751-6612
Phone(203) 349-8037
Fax(888) 751-6612
Sole ProprietorNo
Enumeration DateJune 6, 2014
Last NPPES UpdateMay 31, 20232 updates tracked since enumeration
NPPES CertifiedMay 31, 2023
✔ NPI 1801209952 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License✔ Licensed in CT · 60001
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
30 OLD KINGS HWY S, Darien, CT 06820
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Secondary Practice Location 1

Location 1Massachusetts General Hospital, 55 Fruit St.Boston, MA 02114 · Phone (617) 724-5600

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Oscar A Gerdner Md 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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NANCY LEE GRUENER LPC
Counselor (Professional)
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 883-0464
NEW REFLECTIONS COUNSELING, INC
Clinic/Center (Mental Health (Including Community Mental Health Center))
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 297-8490
ANN OLIN EPIFANIO LMFT
Marriage & Family Therapist
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 461-5095
PENELOPE WILSON LCSW, ED.M
Social Worker (Clinical)
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 300-6655
ASHLEY DAWN PEACE LPC, LMHC
Counselor (Mental Health)
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (325) 785-5394
MR. CHRISTOPHER CHOLANO LPC
Counselor (Professional)
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 883-0464
YASMINE LENNON
Counselor (Professional)
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 883-0464
CHILD CBT PLLC
Psychologist
30 OLD KINGS HWY S
DARIEN, CT 06820
Western Connecticut Planning Region (203) 547-1017

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 Oscar Gerdner's NPI number?

The NPI number for Oscar Gerdner is 1801209952. It was assigned to this individual provider in the NPPES registry on June 6, 2014.

Where is Oscar Gerdner located?

Oscar Gerdner practices at 30 Old Kings Hwy S, Darien, CT 06820. The listed phone number is (203) 349-8037.

What is Oscar Gerdner's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

Is Oscar Gerdner enrolled in Medicare?

Yes. Oscar Gerdner is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Oscar Gerdner was last updated on May 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.