DR. WILLIAM HARRISON KOCH MD
NPI 1083884753
Psychiatry & Neurology - Child & Adolescent Psychiatry in Greenwich, CT

Q: What is William Koch's NPI number?

The NPI number for William Koch is 1083884753. It was assigned to this individual provider in the NPPES registry on March 9, 2008.

Q: What is William Koch's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for William Koch was last updated on March 9, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since March 09, 2008

151 MILBANK AVE, GREENWICH, CT 06830(203) 622-0337(203) 622-1726 Get Directions Write a Review

NPPES record last updated: March 9, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. William Harrison Koch Md NPPES

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

DR. WILLIAM HARRISON KOCH MD (NPI 1083884753) is an individual child & adolescent psychiatry provider in Greenwich, Connecticut, licensed in Connecticut (025221) and active in the NPI registry since March 2008.

NPPES Registry Identity

NPI1083884753

Entity TypeIndividualMale

Primary Taxonomy2084P0804X

Provider Legal NameDR. WILLIAM HARRISON KOCHCredential: MD

Location Address151 MILBANK AVEGreenwich, CT 06830-6616

Mailing Address151 Milbank AveGreenwich, CT 06830-6616 · (203) 622-0337 · Fax (203) 622-1726

Phone(203) 622-0337

Fax(203) 622-1726

Sole ProprietorYes

Enumeration DateMarch 9, 2008

✔ NPI 1083884753 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 · 025221

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.

151 MILBANK AVE, Greenwich, CT 06830

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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 William Koch's NPI number?

The NPI number for William Koch is 1083884753. It was assigned to this individual provider in the NPPES registry on March 9, 2008.

Where is William Koch located?

William Koch practices at 151 Milbank Ave, Greenwich, CT 06830. The listed phone number is (203) 622-0337.

What is William Koch's specialty?

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

When was this NPI record last updated?

The NPPES record for William Koch was last updated on March 9, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.